US3607238A - Heat-resistant to low chromium-nickel alloy steel for large forgings - Google Patents
Heat-resistant to low chromium-nickel alloy steel for large forgings Download PDFInfo
- Publication number
- US3607238A US3607238A US738102A US3607238DA US3607238A US 3607238 A US3607238 A US 3607238A US 738102 A US738102 A US 738102A US 3607238D A US3607238D A US 3607238DA US 3607238 A US3607238 A US 3607238A
- Authority
- US
- United States
- Prior art keywords
- percent
- steel
- heat
- alloy steel
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract description 32
- 239000010959 steel Substances 0.000 title abstract description 32
- 238000005242 forging Methods 0.000 title description 14
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 title description 2
- 229910000990 Ni alloy Inorganic materials 0.000 title 1
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 16
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052796 boron Inorganic materials 0.000 claims abstract description 10
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 10
- 239000010955 niobium Substances 0.000 claims abstract description 10
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 239000011572 manganese Substances 0.000 claims description 5
- 238000005496 tempering Methods 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 4
- VGIPUQAQWWHEMC-UHFFFAOYSA-N [V].[Mo].[Cr] Chemical compound [V].[Mo].[Cr] VGIPUQAQWWHEMC-UHFFFAOYSA-N 0.000 abstract 1
- 239000000470 constituent Substances 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 229910052750 molybdenum Inorganic materials 0.000 description 6
- 239000011733 molybdenum Substances 0.000 description 6
- 229910052720 vanadium Inorganic materials 0.000 description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 molybdenum carbides Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
Definitions
- High hardcnability and good high temperature ductility and creep properties are developed by austenitising the steel in the range 950 C. to 980 C., hardening by cooling to obtain a mainly bainitic structure, and tempering in the range 650 C. to 720 C. for at least 12 hours.
- This invention relates to heat-resistant alloy steels and is concerned with producing agenerally improved steel of this nature having good resistance to high temperature creep combined with good mechanical properties, for use in large forgings.
- the steel of the invention is heat treatable by austenitising in a temperature range 950 C. to 980 C., hardening by cooling to obtain a mainly bainitic structure, and tempering in a temperature range 650 C. to 720 C. for at least 12 hours.
- Nickel from 0.5 to 0.7 Chromium from 0.9 to 1.1 Molybdenum from 0.65 to 0.85 Vanadium from 0.30 to 0.35 Niobium from 0.05 to 0.09
- the balance of the constituents is iron, except for impurities and incidental constituents, such as sulfur which is present in an amount not exceeding 0.015 percent of the total weight, and phosphorous, which is also present in an amount not exceeding 0.15 percent of the total weight.
- a steel produced according to the invention is particularly resistant to high temperature creep, and samples prepared from any part of a forging made from such a steel would withstand 1,000 hours at 550 C., and 7 tons per squareinch, and exhibit a total plastic strain of less than 0.1 percent;
- the foregoing properties are developed by austenitising a forging produced from a steel of the invention in the range 950 to 980 C., and subsequently hardening the forging by cooling in air, steam, water-mist or oil so as to obtain a mainly bainitic structure.
- the desired properties are then obtained by tempering the hardened steel in the range of from 650 to 720 C. for at least 12 hours. Optimum properties are usually obtained if the tempering treatment is carried out in the range of from 690to 710 C.
- the carbon content in the range 0.22 to 0.26 percent by weight for optimum creep strength and creep ducility properties.
- the manganese and nickel contents should be controlled to within the stated ranges so that the combined manganese and nickel content in the steel is not greater than 1.5 percent by weight, in order to prevent the steel reverting from a preferred upper bainitic structure to an austenitic structure when tempered at 700 C.
- the vanadium content is such as to ensure optimum creep strength for the steel, without embrittlement, by the formation of a vanadium carbide phase in the steel.
- Heat-resistant alloy steel consisting essentially of by weight from 0.20 to 0.30 percent carbon, from to 0.30 percent silicon, from 0.4 to L0 percent manganese, from 0.4 to 1.0 percent nickel, from 0.7 to 1.4 percent chromium, from 0.5 to 1.5 percent molybdenum, and from 0.25 to 0.40 percent vanadium, and further containing by weight from 0.03 to 0.15 percent niobium and from 0.002 to 0.010 percent boron to improve the hardenability, high temperature ductility and high temperature creep properties of the steel, the balance except for impurities and incidental constituents which include from 0 to 0.040 percent by weight sulfur and from 0 to 0.040 percent by weight phosphorus, being iron.
- Heat-resistant alloy steel according to claim 1 containing by weight from 0.05 to 0.09 percent niobium and from 0.004 to 0.008 percent boron.
- Heat-resistant alloy steel according to claim 1 containing 0.22 to 0.26 percent carbon.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Heat Treatment Of Steel (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB30166/67A GB1161844A (en) | 1967-06-29 | 1967-06-29 | Improved Heat-Resistant Alloy Steel for Large Forgings. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3607238A true US3607238A (en) | 1971-09-21 |
Family
ID=10303324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US738102A Expired - Lifetime US3607238A (en) | 1967-06-29 | 1968-06-19 | Heat-resistant to low chromium-nickel alloy steel for large forgings |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3607238A (de) |
| AT (1) | AT295570B (de) |
| DE (1) | DE1758565B1 (de) |
| FR (1) | FR1572751A (de) |
| GB (1) | GB1161844A (de) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5383768A (en) * | 1989-02-03 | 1995-01-24 | Hitachi, Ltd. | Steam turbine, rotor shaft thereof, and heat resisting steel |
| US20070068607A1 (en) * | 2005-09-29 | 2007-03-29 | Huff Philip A | Method for heat treating thick-walled forgings |
| US20110070088A1 (en) * | 2009-09-24 | 2011-03-24 | General Electric Company | Steam turbine rotor and alloy therefor |
| CN102606218A (zh) * | 2011-01-21 | 2012-07-25 | 通用电气公司 | 焊接转子、具有焊接转子的蒸汽轮机及焊接转子制造方法 |
| US20120189461A1 (en) * | 2011-01-21 | 2012-07-26 | General Electric Company | Welded Rotor, a Steam Turbine Having a Welded Rotor and a Method for Producing a Welded Rotor |
| US20120189460A1 (en) * | 2011-01-21 | 2012-07-26 | General Electric Company | Welded Rotor, a Steam Turbine having a Welded Rotor and a Method for Producing a Welded Rotor |
| CN107695266A (zh) * | 2017-11-15 | 2018-02-16 | 江阴方圆环锻法兰有限公司 | 汽轮机用耐高温锻件及其锻造方法 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4319934A (en) * | 1979-01-31 | 1982-03-16 | Snap-On Tools Corporation | Method of forming tools from alloy steel for severe cold forming |
| FR2625227A1 (fr) * | 1987-12-23 | 1989-06-30 | Intraviss Sn | Acier allie pour boulonnerie a controle de serrage par ultrason |
| JPH05239590A (ja) * | 1992-02-27 | 1993-09-17 | Nkk Corp | 耐摩耗性に優れた鋼 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2880085A (en) * | 1956-03-29 | 1959-03-31 | Firth Vickers Stainless Steels Ltd | Ferritic alloy steels for use at elevated temperatures |
| US2968549A (en) * | 1959-06-10 | 1961-01-17 | United States Steel Corp | High strength alloy for use at elevated temperatures |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH310888A (de) * | 1951-06-13 | 1955-11-15 | Deutsche Edelstahlwerke Ag | Stahl, insbesondere für warmfeste Gegenstände. |
| AT191924B (de) * | 1952-11-29 | 1957-09-25 | Boehler & Co Ag Geb | Verwendung von naturharten Baustählen zur Herstellung geschweißter Bauteile |
-
1967
- 1967-06-29 GB GB30166/67A patent/GB1161844A/en not_active Expired
-
1968
- 1968-06-19 US US738102A patent/US3607238A/en not_active Expired - Lifetime
- 1968-06-28 AT AT624268A patent/AT295570B/de not_active IP Right Cessation
- 1968-06-28 FR FR1572751D patent/FR1572751A/fr not_active Expired
- 1968-06-28 DE DE19681758565 patent/DE1758565B1/de active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2880085A (en) * | 1956-03-29 | 1959-03-31 | Firth Vickers Stainless Steels Ltd | Ferritic alloy steels for use at elevated temperatures |
| US2968549A (en) * | 1959-06-10 | 1961-01-17 | United States Steel Corp | High strength alloy for use at elevated temperatures |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5383768A (en) * | 1989-02-03 | 1995-01-24 | Hitachi, Ltd. | Steam turbine, rotor shaft thereof, and heat resisting steel |
| US20070068607A1 (en) * | 2005-09-29 | 2007-03-29 | Huff Philip A | Method for heat treating thick-walled forgings |
| US20110070088A1 (en) * | 2009-09-24 | 2011-03-24 | General Electric Company | Steam turbine rotor and alloy therefor |
| EP2302089A1 (de) * | 2009-09-24 | 2011-03-30 | General Electric Company | Dampfturbinenrotor und Legierung dafür |
| US8523519B2 (en) | 2009-09-24 | 2013-09-03 | General Energy Company | Steam turbine rotor and alloy therefor |
| CN102606218A (zh) * | 2011-01-21 | 2012-07-25 | 通用电气公司 | 焊接转子、具有焊接转子的蒸汽轮机及焊接转子制造方法 |
| US20120189461A1 (en) * | 2011-01-21 | 2012-07-26 | General Electric Company | Welded Rotor, a Steam Turbine Having a Welded Rotor and a Method for Producing a Welded Rotor |
| US20120189459A1 (en) * | 2011-01-21 | 2012-07-26 | General Electric Company | Welded Rotor, a Steam Turbine having a Welded Rotor and a Method for Producing a Welded Rotor |
| US20120189460A1 (en) * | 2011-01-21 | 2012-07-26 | General Electric Company | Welded Rotor, a Steam Turbine having a Welded Rotor and a Method for Producing a Welded Rotor |
| CN102619569A (zh) * | 2011-01-21 | 2012-08-01 | 通用电气公司 | 焊接转子、具有焊接转子的蒸汽轮机及焊接转子制造方法 |
| US8944761B2 (en) * | 2011-01-21 | 2015-02-03 | General Electric Company | Welded rotor, a steam turbine having a welded rotor and a method for producing a welded rotor |
| CN107695266A (zh) * | 2017-11-15 | 2018-02-16 | 江阴方圆环锻法兰有限公司 | 汽轮机用耐高温锻件及其锻造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| AT295570B (de) | 1972-01-10 |
| GB1161844A (en) | 1969-08-20 |
| FR1572751A (de) | 1969-06-27 |
| DE1758565B1 (de) | 1972-03-16 |
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