JP2000282182A - High fatigue life and high corrosion resistance martensitic stainless steel with excellent cold workability - Google Patents
High fatigue life and high corrosion resistance martensitic stainless steel with excellent cold workabilityInfo
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- JP2000282182A JP2000282182A JP11085779A JP8577999A JP2000282182A JP 2000282182 A JP2000282182 A JP 2000282182A JP 11085779 A JP11085779 A JP 11085779A JP 8577999 A JP8577999 A JP 8577999A JP 2000282182 A JP2000282182 A JP 2000282182A
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- fatigue life
- cold workability
- corrosion resistance
- martensitic stainless
- stainless steel
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Abstract
(57)【要約】 （修正有）
【課題】 冷間加工性に優れた高疲労寿命・高耐食マル
テンサイト系ステンレス鋼を提供すること。
【解決手段】 重量で、Ｃ：０．２０〜０．５５％、Ｓ
ｉ：０．０１〜０．５０％、Ｍｎ：０．０１〜１．００
％、Ｎｉ：０．０１〜１．００％、Ｃｒ：１３．００〜
１８．００％、Ｍｏ：０．１０〜２．００％、Ｎ：０．
０３〜０．１８％、Ｃ＋Ｎ：０．３３５４〜０．５８１
７以下を含有し、残部Ｆｅおよび不可避的不純物からな
り、フェライト係数＝−２５−３１．７Ｃ−２８．７Ｎ
＋２．１Ｃｒ＋２．９Ｓｉ＋３．４Ｍｏ≦０、２≦炭化
物係数＝−６．１７＋２４．３６（Ｃ＋Ｎ）≦８を満た
す合金鋼。[PROBLEMS] To provide a high fatigue life and high corrosion resistant martensitic stainless steel excellent in cold workability. SOLUTION: By weight, C: 0.20 to 0.55%, S
i: 0.01 to 0.50%, Mn: 0.01 to 1.00
%, Ni: 0.01-1.00%, Cr: 13.00-%
18.00%, Mo: 0.10 to 2.00%, N: 0.
03-0.18%, C + N: 0.3354-0.581
7 or less, the balance being Fe and unavoidable impurities, and a ferrite coefficient = -25-31.7C-28.7N
+ 2.1Cr + 2.9Si + 3.4Mo ≦ 0, 2 ≦ Carbide coefficient = −6.17 + 24.36 (C + N) ≦ 8.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、摺動部部品、軸受
等に使用される冷間加工性に優れた高疲労寿命・高耐食
マルテンサイト系ステンレス鋼に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high fatigue life and high corrosion resistance martensitic stainless steel excellent in cold workability used for sliding parts, bearings and the like.
【０００２】[0002]
【従来の技術】従来から、各種産業機械、自動車、電子
機器、化学装置等において高強度と耐食性が要求される
部品の素材として利用されるマルテンサイト系ステンレ
ス鋼、例えば、各種シャフト類、耐食軸受等の素材には
ＳＵＳ４１０、ＳＵＳ４２０Ｊ２、ＳＵＳ４４０Ｃ等の
マルテンサイト系ステンレス鋼が使用されている。一
方、特願平２−２２４４４号で示される鋼種やＳＵＳ４
３１等が提案されている。2. Description of the Related Art Conventionally, martensitic stainless steels used as materials for parts requiring high strength and corrosion resistance in various industrial machines, automobiles, electronic devices, chemical devices, etc., for example, various shafts, corrosion resistant bearings. For such materials, martensitic stainless steels such as SUS410, SUS420J2, and SUS440C are used. On the other hand, steel grades disclosed in Japanese Patent Application No.
31 etc. have been proposed.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上述し
た低Ｃ低Ｃｒ材のＳＵＳ４１０は、Ｃ量が低いため焼入
れ焼戻し状態でもあまり高い硬度が得られない。また、
低Ｃｒ材のＳＵＳ４２０Ｊ２等はＣｒ量が低いため耐食
性もあまり良くない。一方、高Ｃ、高Ｃｒ材のＳＵＳ４
４０Ｃ等は、焼入れ焼戻し状態で高硬度が得られるが、
粗大な炭化物を含み、焼なまし状態での硬さが高いた
め、冷間加工性が悪い。さらに、ＳＵＳ４４０Ｃ等の高
Ｃ高Ｃｒ材は、Ｃｒ含有量が高いものの、多量の炭化物
が析出するために素地のＣｒ量が減少し、耐食性が必ず
しもよくない。また、前述した特願平２−２２４４４号
で示されているマルテンサイト系ステンレス鋼では、転
動疲労寿命には優れているもののＣｒ量の低いために耐
銹性に劣る。ＳＵＳ４３１にあっては、焼なまし硬さが
高いために冷間加工性に劣るし、フェライト相が析出す
るために転動疲労寿命に劣る等の問題がある。However, SUS410, which is a low C and low Cr material described above, has a low C content, so that it cannot obtain a very high hardness even in a quenched and tempered state. Also,
SUS420J2, which is a low Cr material, has a low Cr content, and thus has poor corrosion resistance. On the other hand, SUS4 of high C and high Cr material
For 40C etc., high hardness can be obtained in the quenched and tempered state,
Since it contains coarse carbides and has high hardness in an annealed state, it has poor cold workability. Further, a high-C high-Cr material such as SUS440C has a high Cr content, but a large amount of carbide precipitates, so that the amount of Cr in the base material is reduced, and the corrosion resistance is not always good. Further, the martensitic stainless steel disclosed in the above-mentioned Japanese Patent Application No. 2-2444 has excellent rolling contact fatigue life, but is inferior in rust resistance due to low Cr content. SUS431 has a problem that cold workability is inferior due to high annealing hardness, and rolling fatigue life is inferior due to precipitation of ferrite phase.
【０００４】[0004]
【課題を解決するための手段】本発明は、上述したよう
な問題を解決したもので、焼入れ焼戻し状態での疲労寿
命を確保するため、フェライト係数の制御によりフェラ
イト生成を抑制し、かつ焼なまし状態での冷間加工性の
確保と疲労寿命の向上のため、炭化物係数を調整したこ
とにある。これによって、焼なまし状態で冷間加工性に
優れ、焼入焼戻し状態で優れた転動疲労寿命を有する冷
間加工性に優れた高疲労寿命・高耐食マルテンサイト系
ステンレス鋼を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. In order to secure the fatigue life in the quenched and tempered state, the ferrite coefficient is controlled to suppress the formation of ferrite. The purpose is to adjust the carbide coefficient in order to ensure cold workability and improve the fatigue life in a better state. This provides a high fatigue life and high corrosion resistant martensitic stainless steel with excellent cold workability having excellent cold workability in an annealed state and excellent rolling fatigue life in a quenched and tempered state. It is in.
【０００５】その発明の要旨とするところは、（１）重
量で、Ｃ：０．２０〜０．５５％、Ｓｉ：０．０１〜
０．５０％、Ｍｎ：０．０１〜１．００％、Ｎｉ：０．
０１〜１．００％、Ｃｒ：１３．００〜１８．００％、
Ｍｏ：０．１０〜２．００％、Ｎ：０．０３〜０．１８
％、を含有し、かつ、Ｃ＋Ｎ：０．３３５４〜０．５８
１７％、残部Ｆｅおよび不可避的不純物からなることを
特徴とする冷間加工性に優れた高疲労寿命・高耐食マル
テンサイト系ステンレス鋼。ただし、フェライト係数
＝−２５−３１．７Ｃ−２８．７Ｎ＋２．１Ｃｒ＋２．
９Ｓｉ＋３．４Ｍｏ≦０、２≦炭化物係数＝−６．１
７＋２４．３６（Ｃ＋Ｎ）≦８を満たすことにある。The gist of the invention is as follows: (1) By weight, C: 0.20 to 0.55%, Si: 0.01 to
0.50%, Mn: 0.01 to 1.00%, Ni: 0.
01 to 1.00%, Cr: 13.00 to 18.00%,
Mo: 0.10 to 2.00%, N: 0.03 to 0.18
%, And C + N: 0.3354 to 0.58
A high fatigue life and high corrosion resistant martensitic stainless steel excellent in cold workability, characterized by comprising 17%, the balance being Fe and unavoidable impurities. However, ferrite coefficient = -25-31.7C-28.7N + 2.1Cr + 2.
9Si + 3.4Mo ≦ 0, 2 ≦ Carbide coefficient = −6.1
7 + 24.36 (C + N) ≦ 8.
【０００６】[0006]
【発明の実施の形態】以下、本発明の冷間加工性に優れ
た高疲労寿命・高耐食マルテンサイト系ステンレス鋼の
成分範囲の限定理由について具体的に述べる。 Ｃ：０．２０〜０．５５％ Ｃは焼入焼戻後の強度確保のため、０．２０％以上必要
である。しかし、０．５５％を超えると巨大炭化物が析
出して靱性を低下させ、また耐食性を悪化させる。従っ
て、Ｃ含有量は０．２０〜０．５５％とした。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the reasons for limiting the component range of the high fatigue life and high corrosion resistant martensitic stainless steel excellent in cold workability of the present invention will be described. C: 0.20 to 0.55% C is required to be 0.20% or more in order to secure strength after quenching and tempering. However, if it exceeds 0.55%, giant carbides precipitate to lower toughness and deteriorate corrosion resistance. Therefore, the C content was set to 0.20 to 0.55%.
【０００７】Ｓｉ：０．０１〜０．５０％ Ｓｉは焼なまし硬さ上昇を抑制し、冷間加工性を確保す
るために、０．０１〜０．５０％とした。 Ｍｎ：０．０１〜１．００％ Ｍｎは耐食性および冷間加工性の低下を抑制するため、
０．０１〜１．００％以下とした。Si: 0.01 to 0.50% Si is used in an amount of 0.01 to 0.50% in order to suppress an increase in annealing hardness and to secure cold workability. Mn: 0.01 to 1.00% Mn suppresses deterioration of corrosion resistance and cold workability.
It was made 0.01 to 1.00% or less.
【０００８】Ｎｉ：０．０１〜１．００％ Ｎｉは耐候性の確保および冷間加工性低下を抑制させる
ため、０．０１〜１．００％とした。 Ｃｒ：１３．００〜１８．００％ Ｃｒは耐食性を与える元素で一般的な耐食性（耐候性）
を確保するためには、１３．００％以上必要である。し
かも、フェライト安定化元素であり、１８．００％を超
えるとフェライトが残留し特性を劣化させる。従って、
１３．００〜１８．００％とした。Ni: 0.01 to 1.00% Ni is used in an amount of 0.01 to 1.00% in order to secure weather resistance and suppress a decrease in cold workability. Cr: 13.0 to 18.00% Cr is an element imparting corrosion resistance and is generally corrosion resistant (weather resistance).
Is required to be 13.00% or more. In addition, it is a ferrite stabilizing element. If it exceeds 18.00%, ferrite remains and deteriorates characteristics. Therefore,
13.00 to 18.00%.
【０００９】Ｍｏ：０．１０〜２．００％ Ｍｏは耐銹性の確保するために０．１０％以上必要であ
る。しかし２．００％を超えるとフェライト相の生成す
るため、これを抑制するために２．００％以下とした。 Ｎ：０．０３〜０．１８％ ＮはＣと同様、強度向上に効果があるが、Ｃと異なり耐
食性を劣化させないため、Ｃと置換させる。０．０３％
未満では耐食性の効果が薄く、０．１８％を超える添加
は困難なため制限する。特に、Ｎ添加によって耐食性改
善、強度向上を図ったものであり、０．０３〜０．１８
％とした。Mo: 0.10 to 2.00% Mo must be 0.10% or more in order to ensure rust resistance. However, when the content exceeds 2.00%, a ferrite phase is generated. N: 0.03% to 0.18% N is effective in improving the strength similarly to C. However, unlike C, it does not deteriorate the corrosion resistance, so it is replaced with C. 0.03%
If it is less than 10%, the effect of corrosion resistance is thin, and it is difficult to add more than 0.18%, so that it is limited. In particular, corrosion resistance and strength are improved by adding N, and 0.03 to 0.18
%.
【００１０】フェライト係数＝−２５−３１．７Ｃ−２
８．７Ｎ＋２．１Ｃｒ＋２．９Ｓｉ＋３．４Ｍｏ≦０ フェライト相を抑制するには上記関係があることを見出
し、疲労寿命の向上に有効であることを確認した。 炭化物係数：２≦−６．１７＋２４．３６（Ｃ＋Ｎ）≦
８ 疲労寿命特性を得るためには、フェライト相の抑制と、
ある程度の炭化物確保が必要である。ある程度の炭化物
を確保するには炭化物係数が２以上必要である。しか
し、過度の添加は冷間加工性の低下を招くため、８以下
とした。Ferrite coefficient = -25-31.7C-2
8.7N + 2.1Cr + 2.9Si + 3.4Mo ≦ 0 It was found that there was the above relationship in suppressing the ferrite phase, and it was confirmed that it was effective in improving the fatigue life. Carbide coefficient: 2 ≦ −6.17 + 24.36 (C + N) ≦
8 In order to obtain the fatigue life characteristics, it is necessary to suppress the ferrite phase,
It is necessary to secure a certain amount of carbide. To secure a certain amount of carbide, a carbide coefficient of 2 or more is required. However, excessive addition causes a reduction in cold workability, so the content was set to 8 or less.
【００１１】[0011]
【実施例】１００ｋｇ真空誘導溶解炉にて溶製した表１
に示す各成分の鋼塊を直径２０〜６５ｍｍの棒鋼に鍛伸
した。鍛伸材を８７０℃、２時間保持後徐冷の焼なまし
処理を行い、冷間加工性の調査を行った。また、１０５
０℃、３０分保持後油冷後１５０℃、１時間保持後空冷
の焼入焼戻し処理を行い、ミクロ組織調査、転動疲労寿
命および耐候性の試験を行った。各試験条件および評価
方法を以下に示す。EXAMPLES Table 1 melted in a 100 kg vacuum induction melting furnace
The ingots of the respective components shown in Table 1 were forged into steel bars having a diameter of 20 to 65 mm. After holding the forged material at 870 ° C. for 2 hours, an annealing treatment of slow cooling was performed, and the cold workability was investigated. Also, 105
After holding at 0 ° C. for 30 minutes, oil cooling, and then holding at 150 ° C. for 1 hour, air-cooling quenching and tempering were performed, and microstructure examination, rolling fatigue life and weather resistance tests were performed. The test conditions and evaluation method are shown below.
【００１２】（１）炭化物量調査 焼入焼戻し状態の各鋼種炭化物析出の平均面積率を求め
るため、各鋼種１０視野の炭化物析出量を画像解析によ
り調査し、平均をその鋼種のフェライト量とした。実験
の結果、炭化物面積率は、炭化物係数：−６．７＋２
４．３６（Ｃ＋Ｎ）で近似できることを見出し、２以上
８以下を合格とした。(1) Carbide Content Investigation In order to determine the average area ratio of carbide precipitation of each steel type in the quenched and tempered state, the carbide precipitation amount in 10 fields of each steel type was investigated by image analysis, and the average was taken as the ferrite content of the steel type. . As a result of the experiment, the carbide area ratio was calculated as follows: carbide coefficient: -6.7 + 2
It was found that it could be approximated by 4.36 (C + N), and 2 or more and 8 or less were regarded as acceptable.
【００１３】（２）フェライト量調査 焼入焼戻し状態の各鋼種フェライト相析出量の平均面積
率を求めるため、各鋼種１０視野のフェライト相析出量
を画像解析により調査し、平均をその鋼種のフェライト
量とした。実験の結果、フェライト係数は−２５−３
１．７Ｃ−２８．７Ｎ＋２．１Ｃｒ＋２．９Ｓｉ＋３．
４Ｍｏで近似でき、０以下を合格とした。(2) Investigation of ferrite content In order to determine the average area ratio of the amount of ferrite phase precipitated in each steel type in the quenched and tempered state, the amount of ferrite phase precipitated in 10 fields of each steel type was investigated by image analysis, and the average was determined for the ferrite of that steel type. Amount. As a result of the experiment, the ferrite coefficient was -25-3.
1.7C-28.7N + 2.1Cr + 2.9Si + 3.
4Mo was approximated, and 0 or less was regarded as a pass.
【００１４】（３）冷間加工性（限界据込み率） 焼なまし状態の試験片を直径１４ｍｍ×長さ２１ｍｍに
加工し、ｎ＝５個の試験片を冷間で圧縮し割れが発生し
た時の加工率の平均を限界据込み率とし、冷間加工性の
指標とした。評価は、６５％以上を合格とした。(3) Cold workability (critical upsetting ratio) An annealed test piece is processed into a diameter of 14 mm x a length of 21 mm, and n = 5 test pieces are cold-compressed to generate cracks. The average of the working rates at the time of doing was defined as the marginal upsetting rate, and was used as an index of cold workability. The evaluation passed 65% or more.
【００１５】（４）疲労寿命（スラスト寿命） 焼入焼戻し状態の試験片を直径６０ｍｍ×厚さ８ｍｍに
加工し、常温、面圧：４４１０ＭＰａによるスラスト型
転動疲労寿命試験での疲労寿命特性を調査した。評価は
累積破損確率が１０％となる応力繰返し数（ｎ）で行
い、Ａ：１×１０ 7 回以上、Ｂ：１×１０7 回未満と
し、Ａを合格とした。(4) Fatigue Life (Thrust Life) A test piece in a quenched and tempered state is reduced to a diameter of 60 mm and a thickness of 8 mm.
Processing, normal temperature, surface pressure: 4410MPa thrust type
The fatigue life characteristics in the rolling fatigue life test were investigated. Evaluation
Performed at the number of stress cycles (n) at which the cumulative failure probability becomes 10%
A: 1 × 10 7Times or more, B: 1 × 107Less than
And passed A.
【００１６】（５）耐候性 上記焼入焼戻し状態にある試験片を直径１２ｍｍ×高さ
２１ｍｍの試験片を用い、塩水噴霧試験を行った。試験
は、５％ＮａＣｌ水溶液を３５℃で１６時間噴霧して行
った。評価は、Ａ：無発銹、Ｂ：やや発銹（発銹が認め
られ面積率が１０％未満）、Ｃ：発銹（面積率で１０％
以上）とし、Ａを合格とした。(5) Weather Resistance A salt water spray test was performed on the test piece in the quenched and tempered state using a test piece having a diameter of 12 mm and a height of 21 mm. The test was performed by spraying a 5% aqueous NaCl solution at 35 ° C. for 16 hours. The evaluation was A: no rust, B: slightly rusted (rusting was observed and the area ratio was less than 10%), C: rusting (area ratio was 10%)
Above) and A was accepted.
【００１７】[0017]
【表１】 [Table 1]
【００１８】表１に示すように、Ｎｏ１〜Ｎｏ６を本発
明の実施例としての化学成分を掲げ、Ｎｏ７〜Ｎｏ１２
を比較例の化学成分組成とした。その実験結果を、比較
例Ｎｏ７はＮｉ添加量が高いため限界据込み率が低下
し、かつＣ＋Ｎが低いためフェライト相が生成し疲労寿
命が低下する。比較例Ｎｏ８はＣが低いことによりフェ
ライト相が生成し疲労寿命が低下する。比較例Ｎｏ９は
Ｃｒが高いことにより限界据込み率が低下する。比較例
Ｎｏ１０はＳｉが高く、限界据込み率が低下する。比較
例Ｎｏ１１はＭｏが高く、フェライト相が生成し疲労寿
命が低下する。比較例Ｎｏ１２はＭｎが高く、限界据込
み率および耐候性が低下する。比較例Ｎｏ１３はＣｒが
低く、耐候性が低下する。比較例Ｎｏ１４は炭化物係数
が高くため限界据込み率が低下することが判る。As shown in Table 1, No. 1 to No. 6 are chemical components as examples of the present invention, and No. 7 to No. 12
Is the chemical component composition of the comparative example. The experimental results show that Comparative Example No. 7 has a lower Ni upsetting ratio due to a high Ni addition amount, and a low ferrite phase due to a low C + N, resulting in a reduced fatigue life. In Comparative Example No. 8, since C is low, a ferrite phase is formed and the fatigue life is reduced. In Comparative Example No. 9, the critical upsetting ratio decreases due to the high Cr. Comparative Example No. 10 has a high Si, and the critical upsetting ratio decreases. In Comparative Example No. 11, Mo is high, a ferrite phase is formed, and the fatigue life is reduced. Comparative Example No. 12 has a high Mn, and the critical upsetting ratio and the weather resistance decrease. Comparative Example No. 13 has low Cr and deteriorates weather resistance. It can be seen that Comparative Example No. 14 has a high carbide coefficient, and thus the critical upsetting ratio decreases.
【００１９】[0019]
【発明の効果】以上述べたように、本発明は冷間加工性
に優れた、高疲労寿命・高耐食性を有する材料を提供す
ることが出来る、優れた効果を奏するものである。As described above, the present invention has an excellent effect of being able to provide a material having excellent cold workability and a high fatigue life and high corrosion resistance.
Claims (1)
ｅおよび不可避的不純物からなることを特徴とする冷間
加工性に優れた高疲労寿命・高耐食マルテンサイト系ス
テンレス鋼。ただし、 フェライト係数＝−２５−３１．７Ｃ−２８．７Ｎ＋
２．１Ｃｒ＋２．９Ｓｉ＋３．４Ｍｏ≦０ ２≦炭化物係数＝−６．１７＋２４．３６（Ｃ＋Ｎ）
≦８を満たすこと1. Weight: C: 0.20 to 0.55%, Si: 0.01 to 0.50%, Mn: 0.01 to 1.00%, Ni: 0.01 to 1.00 %, Cr: 13.00 to 18.00%, Mo: 0.10 to 2.00%, N: 0.03 to 0.18%, and C + N: 0.3354 to 0.5817% , The rest F
A high fatigue life and high corrosion resistant martensitic stainless steel excellent in cold workability, characterized by comprising e and unavoidable impurities. However, ferrite coefficient = -25-31.7C-28.7N +
2.1Cr + 2.9Si + 3.4Mo ≦ 02 ≦ Carbide coefficient = −6.17 + 24.36 (C + N)
Satisfies ≦ 8
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| JP11085779A JP2000282182A (en) | 1999-03-29 | 1999-03-29 | High fatigue life and high corrosion resistance martensitic stainless steel with excellent cold workability |
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|---|---|---|---|
| JP11085779A JP2000282182A (en) | 1999-03-29 | 1999-03-29 | High fatigue life and high corrosion resistance martensitic stainless steel with excellent cold workability |
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| JP2000282182A true JP2000282182A (en) | 2000-10-10 |
Family
ID=13868382
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| JP11085779A Withdrawn JP2000282182A (en) | 1999-03-29 | 1999-03-29 | High fatigue life and high corrosion resistance martensitic stainless steel with excellent cold workability |
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| EP1717332A1 (en) * | 2005-04-26 | 2006-11-02 | BÖHLER Edelstahl GmbH | Plastic mold |
| CN100363524C (en) * | 2005-03-17 | 2008-01-23 | 上海材料研究所 | A kind of anti-corrosion and wear-resistant martensitic stainless steel and its manufacturing method and application |
| CN101289730B (en) * | 2007-04-20 | 2011-05-11 | 宝山钢铁股份有限公司 | Manufacturing method of 110ksi high steel grade, high CO2 corrosion resistance oil casing and oil casing manufactured by this method |
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| CN100363524C (en) * | 2005-03-17 | 2008-01-23 | 上海材料研究所 | A kind of anti-corrosion and wear-resistant martensitic stainless steel and its manufacturing method and application |
| EP1717332A1 (en) * | 2005-04-26 | 2006-11-02 | BÖHLER Edelstahl GmbH | Plastic mold |
| CN101289730B (en) * | 2007-04-20 | 2011-05-11 | 宝山钢铁股份有限公司 | Manufacturing method of 110ksi high steel grade, high CO2 corrosion resistance oil casing and oil casing manufactured by this method |
| KR101301357B1 (en) * | 2011-07-15 | 2013-08-29 | 주식회사 포스코 | Manufacturing method of martensitic stainless steel with high carbon content |
| WO2014014246A1 (en) * | 2012-07-16 | 2014-01-23 | 주식회사 포스코 | Martensitic stainless steel and method for manufacturing same |
| KR101423826B1 (en) | 2012-07-16 | 2014-07-25 | 주식회사 포스코 | Martensitic stainless steel and the method of manufacturing the same |
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| CN104471095B (en) * | 2012-07-16 | 2016-11-02 | Posco公司 | Martensitic stainless steel and manufacturing method thereof |
| CN107974634A (en) * | 2017-11-24 | 2018-05-01 | 攀钢集团攀枝花钢铁研究院有限公司 | The preparation method of corrosion-resisting steel |
| DE102020131031A1 (en) | 2020-11-24 | 2022-05-25 | Otto-Von-Guericke-Universität Magdeburg | Martensitic steel alloy with optimized hardness and corrosion resistance |
| CN118086759A (en) * | 2023-09-06 | 2024-05-28 | 四川远方高新装备零部件股份有限公司 | A YF928A alloy steel process for high magnetic permeability, high strength and fatigue resistance shaft |
| CN118086759B (en) * | 2023-09-06 | 2025-01-03 | 四川远方高新装备零部件股份有限公司 | YF928A alloy steel process for high-magnetic-conductivity high-strength anti-fatigue rotating shaft |
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