JPS5928552A - High strength ni base cast alloy excellent in high temperature characteristics - Google Patents

Abstract

PURPOSE:To provide a high strength Ni base cast alloy showing excellent high temp. corrosion resistance and high temp. oxidation resistance in a combustion atmosphere, obtained by containing a specific amount of C, Cr, Fe, W, Mo, Co, Ti and Al. CONSTITUTION:An alloy contains, on the basis of wt%, 0.55-2.0 C, 10<=Cr<28, 1-30 Fe, 0.1-9.0 W, 0.1-8.0 Mo, 1-8 Co, 0.01-4.5 Ti and 0.01-4.5 Al, according to necessity, 0.1-3.0 Si or 0.1-2.0 Mn and, further according to necessity, one kind or more 0.005-0.2 N, 0.01-1.50 Nb, 0.01-1.50 Ta, 0.001-0.20 B and 0.001-0.20 Zr and the remainder Ni. This alloy shows excellent high temp. characteristics in a high temp. combustion atmosphere containing oxides extremely strong in corrosiveness and oxidizing property such as V-oxide or S-oxide and is also excellent in heat shock resistance and toughness.

Description

Detailed Description of the Invention The present invention has excellent high-temperature corrosion resistance, high-temperature oxidation resistance, and high-temperature strength, and is particularly applicable to heavy oil, coal, natural gas,
The present invention relates to a high-strength N, i-based υJ alloy with excellent high-temperature properties suitable for use in manufacturing structural members exposed to combustion atmospheres such as blast furnace gas, coke oven gas, and converter gas.

In general, in heating reaction equipment such as 11, 1 paulownia heating furnaces, petrochemical heating furnaces, boilers, kilns for cement and ceramics, etc., combustion is performed as petroleum or coal.

In addition, natural gas, blast furnace gas, coke oven gas, 1
1) It is well known that furnace gas and the like are used.

Conventionally, among the parts (A) that make these heating reaction devices +1, parts that are particularly exposed to the combustion atmosphere, such as Sugirad hardware for steel heating furnaces, reaction tubes for oil chemical heating furnaces, their supporting metal fittings, and gunner chips. , +J Iler's diffuser and other parts are manufactured using +jiJ g self-combustion atmospheres that reach high temperatures of 700-1250°C and contain highly corrosive and oxidizing substances such as gunasium oxide and sulfur oxide. Kotonori et al. have corrosion resistance, oxidation resistance, and strength in these combustion atmospheres.
e-25%Cr-20%Ni alloy, Fe-30%Cr
Fe-based heat-resistant alloys such as -22%Ni alloy and Fe-28%Cr alloy, and Co-based heat-resistant alloys such as C0-28%Cr-20qbFe alloy (UMCo50) are used.゛However, with the recent advances in technology, the conditions under which the heating reaction equipment is used are becoming more and more severe. Although the CO-based heat-resistant alloys have relatively satisfactory properties, they do not exhibit high-temperature corrosion resistance, high-temperature oxidation resistance, and high-temperature strength. Therefore, the range of its use is limited, and from this point of view, there has been a strong desire to develop an inexpensive material that exhibits excellent corrosion resistance and surface oxidation resistance, especially in a combustion atmosphere, and has high-temperature strength. .

This invention was developed from the above-mentioned viewpoints,
In terms of weight, C20.55~2. 'O%, Cr: Engineering O~2
Less than 8%, Fe: 1-30%, W: 0.1-90%, M
o: 0.1~8゜Oqb, Co: 1~8%, T1: 0,
01 to 4.5%, AQ: 0.01 to 4.5%, and optionally Si: O, 1 to 3.0% or M
Contains n: 0.1 to 2.0%, and further contains N as necessary.
: 0.005~02%, Nb: 0.01~1.50
%, Ta: 0.01-1.50%, B, 0.001-0
20%, and Zr.

0, 1 to 0.20% of OO,
Combustion containing the above and the rest consisting of Ni and unavoidable impurities, has a high temperature of 700 to 1250 degrees Celsius, and contains extremely corrosive and oxidizing vanadium oxides and sulfur oxides. It is an inexpensive N1 base casting alloy that exhibits excellent high-temperature corrosion resistance, high-temperature oxidation resistance, and high-temperature strength in an atmosphere.

The reason why the composition range of the N1 base casting alloy of the present invention is limited as described above will be explained.

(a) The C component includes Cr, W, Mo, Ti, Nb, which is a solid solution in the base material to improve strength and is an alloy component.
and Ta, etc. to form M7C3, MC, and M
23 Forms carbide such as C6 type to be hard and wear resistant)
However, if the content is less than 0.55%, the desired effect cannot be obtained, while if the content exceeds 2.0%, Not only does the precipitation of the carbide increase, but also the grain size becomes coarse and the toughness decreases, making it impossible to withstand the thermal shock caused by rapid heating and cooling.
．． It was set as 0%.

(b) Cr A part of the Cr component dissolves in the matrix and improves high-temperature corrosion resistance and high-temperature oxidation resistance, especially in a combustion atmosphere, while the remaining part forms carbides and hardens. improve the
This has the effect of improving high-temperature wear resistance, but if the content is less than 10%, the desired effect will not be obtained, while if the content is 28% or more, the thermal shock resistance will decrease. , its content should be less than 10-28%.

(c) Fe The Fe component exhibits the same effect as Ni when contained in a predetermined amount, so it is included as a partial substitute for the expensive N1 component for the purpose of cost reduction, but if it is less than 1%. If the content exceeds 30%, the high-temperature strength will decrease, so the content was set at 1 to 30%.

(d) W The W component not only forms a solid solution in the matrix together with MO, but also combines with C to form carbides, thereby improving high-temperature strength, high-temperature hardness, and high-temperature wear resistance. amount is 0
．． If the content is less than 1%, the desired effect cannot be obtained, while if the content exceeds 9.0%, hardness and wear resistance will be improved, but high temperature oxidation resistance, toughness, and thermal shock resistance will be improved. There is a marked deterioration in sexuality,
Its content was determined to be 01 to 9.0.

(e) lvi.

The Mo component has the effect of forming a solid solution in the base material in coexistence with W, strengthening it, and forming carbides to improve high-temperature strength, high-temperature hardness, and high-temperature wear resistance. However, if the content is less than 0.1%, the desired effect cannot be obtained in the above action, while if the content exceeds 8.0%, the high temperature oxidation resistance and toughness will be reduced as in the case of the W component. , and the thermal shock resistance deteriorates, so the content was determined to be between 01 and 8.0.

(f) C0 The C0 component has the effect of further improving high-temperature strength and thermal shock resistance in a combustion atmosphere by solidly dissolving in the base material, but if its content is less than 1 part, the desired effect will not be achieved. On the other hand, even if the content exceeds 8%, no further improvement effect was observed due to the above-mentioned action, so the content was determined to be 1 to 8% in consideration of economic efficiency.

(gJ 'I'i The T1 component suppresses the growth of crystal grains in the substrate, rather makes the crystal grains finer, and forms MC-type carbides and nitrides. It also combines with N1 and A2 and 'CN13 (
Ai! , Ti), which has the effect of improving high-temperature strength, high-temperature wear resistance (high-temperature hardness), thermal shock resistance, and toughness, but if the content is 0.0
If it is less than 1%, the desired effect cannot be obtained;
．． If the content exceeds 5%, not only will carbide formation be promoted at high temperatures and toughness will decrease;
Since the formation of oxides in the combustion atmosphere becomes significant and causes deterioration of high-temperature corrosion resistance and high-temperature oxidation resistance, the content i4 was determined to be 0.01 to 45%.

(■ AQ The AQ acid component improves the oxidation resistance and corrosion resistance against the combustion atmosphere when coexisting with Cr, and furthermore, as mentioned above, it combines with N1 and T1 to form Ni3 (AQ, Ti
), it also forms nitrides that further enhance high-temperature strength and wear resistance, as well as improve thermal shock resistance and toughness, but the content is 0.0
If it is less than 14, the desired effect cannot be obtained;
If the content exceeds 5%, not only will the fluidity and castability of the molten metal decrease, making it difficult to manufacture castings, but also the toughness and weldability will decrease, making it impractical. The content was determined to be 0.01 to 4.5%.

(i) The 5i C1 component, along with Cr, has the effect of improving high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere, as well as deoxidizing action and improving castability by improving the fluidity of molten metal. It also has the effect of improving high-temperature strength, so it is included when these properties are particularly required, but if the content is less than 0.1%, the desired effect will not be achieved. On the other hand, if the content exceeds 3.0%, the toughness and weldability will decrease in relation to Cr, so the content was set at 0.1-3.0%.

In addition, the C1 component may be contained as an unavoidable impurity in a range of less than 0.1% when it is used as a deoxidizing agent, but in this case, the total content including the amount of unavoidable impurities may be 0.1% or more.

(j) Mn In addition to stabilizing austenite by solid solution in the base material, the Mn component has a deoxidizing effect and also has the ability to improve thermal shock resistance and high-temperature wear resistance (high-temperature hardness). is included when these properties are particularly required, but if the content is less than 0.01%, the desired effects cannot be obtained, while if it is contained in excess of 2.0%, the high temperature corrosion resistance Since the high temperature oxidation resistance tends to deteriorate, the content was set at 01 to 20%.

Note that, like the Si component, the 1vin component may also be contained as an unavoidable impurity in a range below the C1 ratio, but in this case as well, the total content including N, which is an unavoidable impurity, is 0.
The ingredients may be adjusted so that it is 1% or more.

(k) N The N component has the effect of forming a solid solution in the austenite matrix and stabilizing it, while the remaining part forms a metal nitride and further improves the high-temperature strength. Therefore, it is included as necessary when high-temperature strength is particularly required, but if the content is less than 0.005%, the desired high-temperature strength improvement effect cannot be obtained. The content was determined to be 0.005 to 0.2% because not only the amount of nitride particles increases, but also the nitride particles become coarse and brittle, resulting in deterioration of thermal shock resistance.

(t) Nb and Ta These components particularly suppress the growth of crystal grains in the substrate,
It also forms MC-type carbides and nitrides to further improve high-temperature strength and high-temperature wear resistance (high-temperature hardness), so it may be included as necessary when these properties are required. However, the content is 0.6
If it is less than 0.01%, the desired effect of improving the above action cannot be obtained,
On the other hand, if the content exceeds 1.5% of each, not only will the formation of oxides in the combustion atmosphere become significant, but also the precipitation of carbides in the alloy will increase too much, resulting in deterioration of toughness and thermal shock resistance. Therefore, each content is set to 0. It was set at 1 to 1.5%.

(m) B and Zr These components have the effect of further improving high temperature strength, high temperature wear resistance (high temperature hardness), thermal shock resistance, as well as high temperature corrosion resistance and high temperature oxidation resistance in a combustion atmosphere. Therefore, they are selectively included depending on the required properties, but if the content is less than 0.001%, the desired improvement effect cannot be obtained, whereas if the content exceeds 0.2%, Toughness.

Since thermal shock resistance, castability, and weldability tend to deteriorate, the content of each was reduced to 0.001.
It was set at ~0.2%.

Next, the N1 base casting alloy of the present invention will be explained using examples and comparing with comparative examples.

EXAMPLES Casting alloys 1 to 53 of the present invention were prepared by melting molten metals having the respective compositions shown in Table 1 in the atmosphere using a conventional high-frequency melting furnace, and then casting them in sand molds.
Comparative casting alloys 1 to 14. and conventionally cast alloy 1.2, and using these test specimens,
A hardness measurement test, a tensile test, and a vanadium attack resistance test were conducted for the purpose of evaluating high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere.

In addition, in the hardness test, Vickers hardness was measured at room temperature and 1100°C, and in the tensile test, Vickers hardness was measured at room temperature and 800°C.
Tensile strength, 0.2% proof stress, and elongation at 1000°C and 1000°C were measured. Furthermore, the vanadium attack resistance test was conducted using the corrosion method (85%V, , O, +1
5% Na25o4) was applied to a test piece at an amount of 20 mf/cril, and the corrosion loss was measured after heating in a vertical electric furnace heated to 800°C and 900°C for 20 hours and 3 hours, respectively. . The results of these measurements are shown in Table 2.

From the results shown in Table 2, the cast alloys 1 to 53 of the present invention all have compositions comparable to the above-mentioned Fe-based heat-resistant alloys and CO-based heat-resistant alloys, compared to conventional cast alloys] and 2.
It is clear that it has superior room temperature and high temperature hardness, room temperature and high temperature strength, and vanadium attack resistance. On the other hand, as seen in Comparative Casting Alloys 1 to 14, the content of any one of the 4\ti components (marked with * in Table 1) is outside the scope of the present invention. Therefore, at least one of the above characteristics becomes inferior.

As mentioned above, the Ni-based casting alloy of the present invention can be used in a high-temperature combustion atmosphere containing highly corrosive and oxidizing oxides such as panasium oxide and sulfur oxide.
It exhibits excellent high-temperature corrosion resistance and high-temperature oxidation resistance, and also has excellent high-temperature strength, high-temperature wear resistance (high-temperature hardness), thermal shock resistance, and toughness, so it is suitable for oil, coal, natural gas,
Furthermore, there are stone and steel heating furnaces and petrochemical heating furnaces that use black gas from various smelting furnaces and coke ovens as fuel.

Furthermore, it exhibits excellent performance when used in the manufacture of structural members such as boilers, cement and ceramic kilns, particularly those exposed to the combustion atmosphere of the fuel.

Applicant: Mitsubishi Metals Corporation

Claims (1)

[Claims] (1) C: 0.55-2.0%, Cr: 10-2
Less than 8%, Fe: 1-30%, W: 0.1-9.
0%, Mo: 0, 1~. 8.0%, CO: 1-8%,
Ti: 0.01-4.5%, AQ: 0.01
~4.5%, with the remainder consisting of N1 and unavoidable impurities (weight%).Excellent high-temperature properties, exhibiting excellent high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere. High strength N1 cast joint umbrella. (2) C: 0.55-2.0%, Cr: 1'
O~28%, ye: 1~30%, W:
0.1. ~9.0%, Mo: 01~80%, Co
: 1~8%, Tl: 0.0 1~4.5%
, AQ: 0.01-4.5%, and Si: 0
．． 1 to 3.0, with the remainder consisting of N1 and unavoidable impurities (weight percent).It has excellent high-temperature properties and exhibits excellent high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere. High strength N1 base casting alloy. (31C: 0.55-2-0%, Cr: 10-2
Less than 8%, Fe: 1-30%, W: 0.1-9
．． 0%, M. 01-8.0%, Co: 1-8%, Ti: 0.01-4
．． 5th, Ap, : o, o l ~ 4.5%, and Mn: 0.1 ~ 2.0%, with the remainder consisting of N1 and unavoidable impurities (hereinafter referred to as "-wt%"). A high-strength N1 base cast alloy with excellent high-temperature properties that exhibits excellent high-temperature corrosion resistance and high-temperature oxidation resistance in a characteristic combustion atmosphere. ~ (4) C: 0.55-2.0%, Cr: 10
~Less than 28%, Fe: 1-30%, W: 0.1
~9.0%, Mo: 0.1~8.0%, Co: 1~
Section 8, Ti: 0.01 to 4.5, A9. :OC1~4
, 5%, further contains N:0, OO5-0.2%, and the remainder is N1 and unavoidable impurities (weight %). Excellent high-temperature corrosion resistance in a combustion atmosphere. and high-strength Ni(5)C with excellent high-temperature properties showing high-temperature oxidation resistance: 0.55-2.0%,
Cr: 10-28% %Ia, Ti”e:
1-30%, w: 0.1-90%
,M. O, 1-8.0%, Co: 1-8%, T
i: 0.0 1-4.5, Δl! :0.01~4
．． 5%, and 0.1 to 30% of Sl, further containing 0.005 to 02% of N, with the remainder consisting of Nj and inevitable impurities. A high-strength N1-base casting alloy with excellent high-temperature properties and exhibiting excellent high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere, characterized by having a content of (hereinafter referred to as "-wt%)". (6) C', 0.55-2.0% lCr: 10-
28% less (i!/4. I”e: 1 ~
30%, W: 0. 1
~9. 0%, MO, '○ engineering~8.0%
, Co: l~8%, Ti: O,'01~4.5%
, Ai! : 0.01-4.5%, and Mn:
Contains 0.1~2.0 ratio, further N double, O○5~
0.2%, with the remainder consisting of Ni and unavoidable impurities (hereinafter referred to as "double weight%"). High strength N1 base casting alloy. ('i') C: 0.55-2.0%, Cr:
10 to less than 28%, T”e: 1 to 30%, W:
0.1~9.0%, Mo:○ l~80%, Co
:1~8%, T1: 0.01~/+,,'v
Contains AQ: 001-45%, and further contains I4
1] 0,01~1.5% and Ta:O○~1.5%
It exhibits excellent high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere. 85 strength N1 base casting alloy with excellent high temperature properties. (8) C: 0.55-2.0%, Cr', 1
0->less than 28%, Ii'e: 1 to 3
0%, W: 0.1 to 9.0%,
Mo: 0, 1-8.0%, Co: 1-8%, Ti
: 0.0 :I~4. ．． 5%, AQ: 0.
01-4.5%, O and Si: O, 1-:3
．． 0%, and further contains one or two of Nb: 0.01~]5% and 'a: O, Ol = 1.5%, with the remainder consisting of N1 and inevitable impurities. A high-strength N1-based υj alloy with excellent high-temperature properties and exhibiting excellent high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere, characterized by having the following characteristics: (9) C: 0.55-2.0%, Cr: 10
~Less than 28%, Fe: 1-30%, W: 0.1-9.0
%, Mo: 0, ]~8. O%, c○: 1-8%
, Ti: 0.0 1-4.5%, AQ: 0.
01 to 45%, and Mn: 0.1 to 2.0, further Nb: 0.01 to 1.5%, and Ta 0.0.
Excellent high-temperature corrosion resistance and high-temperature acid resistance in a combustion atmosphere, characterized by containing one or two of 1 to 1.5%, with the remainder consisting of N1 and unavoidable impurities (weight percent). High-strength N1 with excellent high-temperature properties that show oxidation resistance
Base casting alloy. (10) C: 0.55-2.0%, Cr: 10
~28% less/114. JI゛e: l~30%, W: 0.
1 to 9.0%, Mo, '0, ] to 8.0%, Co: 1
~8%, Ti: 0.01-4.5, /V: 0.0
Contains 1-4.5% of BO,001-0.2%
and Zr: O, 0.2% to 0.2%, and the residue is composed of Nj and unavoidable impurities (weight %), and is excellent in a combustion atmosphere. A high-strength N1 base casting alloy with excellent high-temperature properties that exhibits high-temperature corrosion resistance and high-temperature oxidation resistance. (11) C2 0.55 to 2.0%,
Cr: 10 to 28% less than 1it
74, I"e', 1-30%, W: 0.
1-9.0%, Mo: 0, 1-8.0%, C
o: 1 to 8%, Ti: 0.0
]~71.5%, AQ: 0.01~4.5%,
and S i 20, 1~. ' Contains 3.0% and further contains I3:o,001-02% and Zr:O,001
- 0.02% or 21)], and the remainder has a composition (hereinafter referred to as "wt%") of impurities not listed on the NI list. A high-strength II Ni-based υJ alloy with excellent corrosion resistance, high r/171 oxidation resistance, and excellent high-temperature properties. (12) C: ○ 55-20%, Cr:
Less than 10-28%, I”e: 1-30%
, W: 0.1-9.0%, Mo: 0, 1-8.0
%, Co: 1 to 8%, 'I'i: O, O] to 4.
．． 5%, Au: 0.01-45%, and Mn: 0.1
~2.0% and further contains 13:O,001~02%
It has excellent high-temperature corrosion resistance in a combustion atmosphere and has a composition (hereinafter referred to as "dual weight %") containing one or two of A high-strength Ni-based cast alloy with excellent high-temperature properties that exhibits high-temperature oxidation resistance. (13) C: 0.55-2.0%, Cr: 10-2
Less than 8%, Fe: ] ~ 30%, W: 0.1 ~ 9.
0%, Mo: 0.1~8.0%, Co: 1~
8%, T1. : 0.0 Section 1-4.5, At
! : Contains 0.01 to 45%, and further N. 0, OO5-0.2%, Nb:001-], 5% and Ta, 001-]5%, with the remainder consisting of Ni and unavoidable impurities (hereinafter referred to as ”
A high-strength N1-base casting alloy with excellent high-temperature properties and exhibiting excellent high-temperature 1 corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere, characterized by having -% by weight). (14) C: 0.55-2.0%, Cr: 10
~28% un1ii7j, F'e: 1 ~3
0%, W,' 0.1 ~ 9.
0%, Mo:O], ~80%, Co:
1 to 8 Ti, Ti: 0.01 to 45%, IV: 0.01
~4.5%, Si: 0.1~30%, further N: 0.005~0.2%, Nb: 001°
~1.5% and one or two of Ta: 0.01~1.5%, and the remainder has a composition (weight %) consisting of N1 and inevitable impurities. A high-strength N) base casting alloy with excellent high-temperature properties that exhibits excellent high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere. (], 5) C: 055-2.0%, Cr: 10-
Less than 28%, Fe: 1-30%, W: 0.
1-Q, 0%, Mo'. 0, 1-8.0%, Co: 1-8%, '],'
i: 0. O↓～4.5%, /V: 00
1-4.5%, and 4n,'O,1-72.0
further contains N: 0.005 to 0.2%,
N1]0,01~1.5% and Ta: O,O]~
], 5%, and the remainder is N] and non-111' avoidable impurities (hereinafter -1% by weight), which is excellent in a combustion atmosphere. A high-strength Ni-based cast alloy with excellent high-temperature properties that exhibits high-temperature corrosion resistance and high-temperature oxidation resistance. (16) C2 0.55 to 2.0%,
Cr: ] ○ ~ less than 28%,
F'e', 1-30%, W: 0.1-9.0
%, MOo, 1-8.0%, Co: 1-8%,
'l'j: 0.01-4.5 section, AM: 0.01
Contains ~4.5% and additionally I. 0,OO5~0.2% and 13:O,OOl~0.
2% and one or two of Zr:O, 001-02%, and the remainder is Ni and unavoidable impurities (lower weight %). A high-strength N1 base casting alloy with excellent high-temperature properties that exhibits excellent high-temperature corrosion resistance and high-temperature oxidation resistance. (1'?) C: 0.5 5 ~ 2.0
%, Cr: 10 to less than 28%, Fe: 1 to 30%, W: 0.1 to 9.0
%, Mo: 01-8.0%, Co: 1-8%,
Ti: 0.01 to 4.5, /V: 0.01 to 4.5
%, and Sl: ○l to 30%, and further N: 0
．． 005 to 02%, one or two of B: 0.001 to 0.2% and Zr: O, OOl to 0.2%, with the remainder consisting of Ni and inevitable impurities (
A high-strength N base casting alloy with excellent high-temperature properties and exhibiting excellent high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere, characterized by having a high temperature (% by weight or more). (18) C', 0.55-2.0%, Cr: 1
0 to less than 28%, ]”e: 1 to 30%, W, 01
~9.0%, MO: 0, 1-8.0%, Co: 1-8%
, Ti: 0. Oi ~4.5%, AQ: 0
．． 01 to 4.5%, and Mn: O, 1 to 2.0%, further N: 0.005 to 02%, and B0.
001 to 0.2% and one or two of Zr:O, O○1 to 0.2%, with the remainder consisting of N1 and unavoidable impurities (hereinafter referred to as double weight %). A high-strength Ni-based cast alloy having excellent high-temperature properties and exhibiting excellent high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere. (19) C: 0.55-2.0%, Cr,'l
O~'r<28%, Fe: 1-30%, W
: 0.1~9. C%, Mo: 0, 1-8.0%l C
o: 1-8%, 'l'l: 0.01-4. ,”
), contains Al4: 0.01 to 4.5%, and further contains N
1) 0, Ol~1.5% and Ta: 0.01
-1.5% of one or two types, and B: 0.
001-0.2% and one or two of Zr: 0.001-02%, and the rest is N1 and
A high-strength N1-based cast alloy with excellent high-temperature properties and exhibiting excellent high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere, characterized by having a composition (hereinafter referred to as "-wt%") consisting of avoidable impurities. (20) C: 0.55-2.0%, Cr: 10
~28% end'/88. Fe: 1-30%, W: 0.
1-9.0%, Mo: 0, 1-8.0%, Co: 1-8
%, Ti: 0.01-4.5%, AQ: 0
．． 01 to 4.5%, and S i :0.1 to 3.0, and further contains Nl): 0.01 to 1.5% and (j
One or two of Ta: 0.01-15%, T3: 0.001-02% and Zr: 0.001
~0.2% of l(・[Contains 1 or 2 types,
The remainder consists of one odor and unavoidable impurities (hereinafter referred to as % double weight)
) is a Takaya 1 rule N1 base casting alloy with excellent high temperature properties showing excellent high temperature corrosion resistance and high temperature 1f+i4 oxidation resistance in a combustion atmosphere. (2↓) C: 0.55-2.0%, Cr: 10
~28% not 'i'i! tI, I+'e', 1~3
0'%, W: 0.1~9.0%1MO゛0''~8
0%, Co: 1-8%, Ti: 0.01-45%,
jV: 0.01-4.5%, and Mn
:0.1 to 2.0%, and further contains Nb: o, ol-
1.5% and Ta, one or two of 001-15%, B2 0.001-0.2% and Zr:O,
Excellent high-temperature corrosion resistance in a combustion atmosphere characterized by having a composition (hereinafter referred to as "-wt%") containing one or two of 0O1-0.2% and the remainder consisting of N1 and unavoidable impurities. and a high-strength Ni-based alloy with excellent high-temperature properties that exhibits high-temperature oxidation resistance. (22) C: 0.55-2.0%, Cr: 10
~Less than 28%, TieI ~30%, W:
0.1-9.0%, Mo: 01-80, Co: 1
~8%, Ti:001~45%, AM:O,01~45
% included, 1'): 0.00:+~
02%, Nb: 0.01-1.5% and 'l'a
: 00] to 1.5% of one or two types,
13 000'1-02% and Zr: 0.001
~0.2% of one, Ml or two,
A high-strength Ni-based casting with excellent high-temperature properties that exhibits excellent high-temperature corrosion resistance and high-temperature 11+i4 oxidation resistance in a combustion atmosphere, characterized by having a composition (hereinafter referred to as "double weight %") in which the remainder consists of N1 and impurities to avoid impurities. alloy. (23) C: 0.55-2.0%, Cr: 10
~Less than 28%, Fe:, ~30%, W: 0.1~9.0
%, Moo, 1~8.0%, co:1~8%, T
i: 0.01-4. ．． 5%, AQ: 0.0]
~4.5%, and Si', 0.1 to 3.0%, further N: 0.005 to 02%, and 1bO,
01 to 1.5% and one or two of Ta: 0.01 to 1.5%, B: O, OO1 to 02, and Zr: 0.001' 1 of 0.2% It has excellent high-temperature properties, exhibiting excellent high-temperature corrosion resistance and high-temperature oxidation resistance in a combustion atmosphere. High strength Ni-based alloy. (N;4) (: :O,,5,':1
~20%, Cr:LO~2
8% ii+71, l'a:
J ~ J O% + W ○
1~': J, O%, M. O] ~80%, CO: l ~8%,
Tl: OO1-45%, A+! :001-/l, 5
%, and Mn: 0.1-2.0,
Furthermore, N:0.005~02 section, NbO,01~i,
, 5% and 'I'a: 0.01-1.5% of L] [1 or 2 O weight, 13:0001-0
2% and 1/, r: 17 out of 0.001-02%
It is characterized by having a composition (hereinafter referred to as weight %) consisting of Ni and unavoidable impurities, with the remainder consisting of Ni and unavoidable impurities. High-strength IJi-based casting alloy with excellent high-temperature properties.