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公开(公告)号:WO2023073411A1
公开(公告)日:2023-05-04
申请号:PCT/IB2021/060010
申请日:2021-10-29
申请人: ARCELORMITTAL
IPC分类号: C22C38/02 , C22C38/04 , C22C38/06 , C22C38/48 , C22C38/50 , C22C38/44 , C22C38/54 , C22C38/00 , C21D9/46 , C21D8/02 , C21D1/22 , C21D6/00 , B32B15/01 , C23C2/06 , C23C2/12
摘要: A cold rolled and heat treated steel sheet comprising of the following elements 0.2 % ≦ C ≦ 0.35 %; 0.2 % ≦ Mn ≦ 1.2 %; 0.1% ≦ Si ≦ 0.9 %; 0% ≦ Al ≦ 0.1 %; 0.2% ≦ Cr ≦ 0.8 %; 0.01% ≦ Nb ≦ 0.1%; 0.1% ≦ Ni ≦ 0.9%; 0.1% ≦ Mo ≦ 0.9% 0.01% ≦ Ti ≦ 0.1%; 0% ≦ P ≦ 0.02%; 0% ≦ S ≦ 0.03%; 0% ≦ N ≦ 0.09%; 0.0001% ≦ B ≦ 0.010%; 0% ≦ V≦ 0.1%; 0% ≦ Cu ≦ 2%; 0% ≦ Ca≦ 0.005%; 0% ≦Ce≦ 0.1%; 0% ≦ Mg≦ 0.05%; 0% ≦ Zr≦ 0.05%; the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel comprising, by area percentage, at least 75% of tempered martensite, 0% to 10% Fresh Martensite, 3 to 20% of Ferrite and 0 to 5% Bainite.
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公开(公告)号:WO2023073406A1
公开(公告)日:2023-05-04
申请号:PCT/IB2021/059967
申请日:2021-10-28
申请人: ARCELORMITTAL
发明人: MARTINEZ TARANILLA, Laura , DUPREZ, Lode , MOLI SANCHEZ, Laura , WATERSCHOOT, Tom , KUMAR HATUI, Atish
IPC分类号: C22C38/32 , C22C38/04 , C22C38/02 , C22C38/06 , C22C38/38 , C22C38/00 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/54 , C21D9/46 , C21D8/02 , C21D1/22 , C21D6/00
摘要: A hot rolled steel sheet having a composition comprising of the following elements 0.38% ≤ Carbon ≤ 0.5 %, 1%≤ Manganese ≤ 2%, 0.1%≤ Silicon ≤ 0.7%, 0 01%≤ Aluminum ≤ 0.1%, 0.3% ≤ Chromium ≤ 1%, 0.002% ≤ Boron ≤ 0.05%,0.002 % ≤ Phosphorus ≤ 0.02%, 0% ≤ Sulfur ≤ 0.005%, 0 % ≤ Nitrogen ≤ 0.01%,0% ≤ Molybdenum ≤ 0.5%,0% ≤ Vanadium ≤ 0.5%,0% ≤ Niobium ≤ 0.05%,0.001% ≤ Titanium ≤ 0.1%,0% ≤ Nickel ≤ 1%,0% ≤ Copper ≤ 1%,0% ≤ Tin ≤ 0.1%,0% ≤ Lead ≤ 0.1%,0% ≤ Antimony ≤ 0.1%,0.0001% ≤ Calcium ≤ 0.01%,0% ≤ Magnesium ≤ 0.0010%,the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet comprising in area fraction, at least 94% Martensite, 0% to 5% Residual Austenite and carbides of Chromium, Niobium, Vanadium and Iron from 0% to 5%.
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公开(公告)号:WO2022253912A1
公开(公告)日:2022-12-08
申请号:PCT/EP2022/064945
申请日:2022-06-01
IPC分类号: C21D1/10 , C21D1/20 , C21D1/30 , C21D7/08 , C22C38/02 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/50 , C22C38/54
摘要: Pièce en acier mise en forme à chaud, de composition consistant en 0,22%≤C≤0,35%, 0,50%≤Mn≤1,70%; 0,50%≤Cr≤1,70%; traces≤Mo≤0,15%; traces≤Si≤0,40%; traces≤Ni≤0,50%; traces≤Cu≤0,50%; traces≤V≤0,08%; traces≤Al≤0,10%; 0,001%≤B≤0,010%; 0,01%≤Ti≤0,06%; traces≤Nb≤0,05%; traces≤S≤0,15%; trace ≤Ca≤0,010%; traces≤Te≤0,030%; traces≤Se≤0,050%; traces≤Bi≤0,050%; traces≤Pb≤0,100%; traces≤P≤0,100%; traces≤N≤0,013%; avec 540≤(830- 270*C%–90*Mn%–70*Cr%-83*Mo%-37*Ni%)≤600 et Ti%≥2,5N%. La microstructure consiste en au moins 70% de ferrite bainitique et de carbures ou d'austénite résiduelle, la fraction d'austénite résiduelle étant d'au plus à 10%, au plus 30% de martensite et/ou de ferrite pro-eutectoïde et/ou de perlite, la fraction de ferrite pro-eutectoïde et/ou de perlite étant d'au plus 10%.
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公开(公告)号:WO2022162824A1
公开(公告)日:2022-08-04
申请号:PCT/JP2021/002997
申请日:2021-01-28
申请人: 日本製鉄株式会社
摘要: 優れた耐SSC性を有する鋼材を提供する。本開示の鋼材は、化学組成が質量%で、C:0.035%以下、Si:1.00%以下、Mn:1.00%以下、P:0.030%以下、S:0.0050%以下、sol.Al:0.005~0.100%、N:0.001~0.020%、Ni:5.00~7.50%、Cr:10.00~14.00%、Cu:0.01~1.50%未満、Mo:1.50~3.50%、V:0.01~1.00%、Ti:0.02~0.30%、Co:0.01~0.50%、Ca:0.0003~0.0030%、O:0.0050%以下、W:0~1.50%、Nb:0~0.50%、B:0~0.0050%、Mg:0~0.0050%、希土類元素(REM):0~0.020%及び残部がFe及び不純物からなり、円相当径が1.0μm以上のMn硫化物と、円相当径が2.0μm以上のCa硫化物との合計が0.50個/mm2以下である。
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公开(公告)号:WO2022160720A1
公开(公告)日:2022-08-04
申请号:PCT/CN2021/116576
申请日:2021-09-05
申请人: 江阴兴澄特种钢铁有限公司
IPC分类号: C22C38/02 , C22C38/04 , C22C38/22 , C22C38/32 , C22C38/20 , C22C38/06 , C22C38/54 , C22C38/44 , C22C38/42 , C21C7/06 , C21C7/10 , C21C7/00 , C21D8/00
摘要: 本发明涉及一种球笼式万向节保持架用钢及其生产方法,属于特种钢冶炼技术领域。钢的化学成分wt%为C:0.10~0.25%,Si:0.20~0.40%,Mn:0.40~0.65%,Cr:0.40~0.70%,B:0.0003~0.0025%,Ti:0.010~0.035%,Mo:0.30~0.45%,N:0.0050~0.0100%,S≤0.015%,P≤0.025%,Ni≤0.25%,Cu≤0.30%,Al:0.015~0.035%,O≤0.0010%,As≤0.04%,Sn≤0.03%,Sb≤0.005%,Pb≤0.002%,余量为Fe及不可避免的杂质。钢的微观结构为贝氏体,奥氏体晶粒度≥6级。生产流程为钢水初炼→钢水精炼→钢水真空脱气→连铸→热轧→精整。本申请对化学成分进行优化,降低合金成本。并达到了与20CrMnTi相近的淬透性,该化学成分结合生产方法制造的钢材的强度、韧性都比20CrMnTi更优,综合性能满足球笼式万向节保持架的用钢要求。
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公开(公告)号:WO2022153790A1
公开(公告)日:2022-07-21
申请号:PCT/JP2021/046879
申请日:2021-12-17
申请人: 日鉄ステンレス株式会社
摘要: 質量基準で、C:0.30~0.60%、Si:0.05~1.00%、Mn:0.05~1.50%、P:0.040%以下、S:0.030%以下、Cr:13.0~18.0%、Ni:0.01~0.30%、Mo:0.01~1.00%、Al:0.030%以下、N:0.010~0.350%、Ca:0.0001~0.0030%、O:0.001~0.010%を含み、2.5C+Nが1.10%以上であり、残部がFe及び不純物からなる組成を有するマルテンサイト系ステンレス鋼材である。このマルテンサイト系ステンレス鋼材は、炭化物の平均粒径が0.50μm以下である。また、大きさ10μm以上の炭化物が、0.20個/cm2以下である。
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公开(公告)号:WO2022131802A1
公开(公告)日:2022-06-23
申请号:PCT/KR2021/019125
申请日:2021-12-15
申请人: 주식회사 포스코
IPC分类号: C22C38/50 , C22C38/54 , C22C38/44 , C21D9/46 , C21D8/02 , C23C2/06 , C23C2/40 , C25D3/22 , C25D3/56
摘要: 본 개시는 중량%로, C: 0.0005∼0.2%, Mn: 0.05~0.2%, Si:0.15% 이하(0은 제외), P: 0.03% 이하(0은 제외), S: 0.015% 이하(0은 제외), Al: 0.01~0.05%, Ti: 0.01~0.1%, N: 0.01% 이하(0은 제외)를 포함하고, 추가적으로, Sn, B, Mo, Ni 및 Cr으로 이루어진 그룹에서 선택된 적어도 하나의 MM 성분을 함량의 총합으로 0.0001~0.35% 포함하며, 잔부 Fe 및 기타 불가피한 불순물을 포함하는 냉연강판 및 이의 제조방법에 관한 것이다.
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公开(公告)号:WO2022123289A1
公开(公告)日:2022-06-16
申请号:PCT/IB2020/061639
申请日:2020-12-08
IPC分类号: C22C38/02 , C22C38/04 , C22C38/06 , C22C38/34 , C22C38/38 , C22C38/26 , C22C38/00 , C21D9/46 , C21D8/02 , C21D6/00 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58
摘要: A cold rolled and heat treated steel sheet having a composition comprising of the following elements 0.1%≤Carbon≤0.5%, 1%≤Manganese≤3.4%, 0.5%≤Silicon≤2.5%, 0.01%≤Aluminum≤1.5%, 0.05%≤Chromium≤1%, 0.001%≤ Niobium≤0.1%, 0%≤Sulfur≤0.003%, 0.002%≤Phosphorus≤0.02%, 0%≤Nitrogen≤0.01%, 0%≤Molybdenum≤0.5%, 0.001%≤Titanium≤0.1%, 0.01% ≤Copper≤2%, 0.01%≤Nickel≤3%, 0.0001 % ≤ Calcium ≤ 0.005 %, 0 % ≤ Vanadium ≤ 0.1 %, 0 % ≤ Boron ≤ 0.003 %, 0 % ≤ Cerium≤ 0.1 %, 0 % ≤ Magnesium≤ 0.010 %, 0 % ≤ Zirconium≤ 0.010 % the remainder composition being composed of iron and the unavoidable impurities, and a microstructure of the said rolled steel sheet comprises by area fraction, 10% to 60% Bainite, 5% to 50% Ferrite, 5% to 25% Residual Austenite, Martensite 2% to 20%, Tempered Martensite 0% to 25%, the balance being Annealed Martensite, which content shall be from 1% to 45%.
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公开(公告)号:WO2022042622A1
公开(公告)日:2022-03-03
申请号:PCT/CN2021/114658
申请日:2021-08-26
申请人: 宝山钢铁股份有限公司
IPC分类号: C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/44 , C22C38/50 , C22C38/54 , C22C38/58 , C21D1/26 , C21D6/00 , C21D8/02 , C21D9/00 , C21D9/52
摘要: 一种具有超高屈强比的吉帕级贝氏体钢,其除了Fe以外还含有质量百分含量如下的化学元素:C:0.12~0.24%;Si:0.2~0.5%;Mn:1.3~2.0%;B:0.001~0.004%;Al:0.01~0.05%;Cr、Nb、Ti和Mo中的至少一种,其中Cr≤0.4%,Nb≤0.06%,Ti≤0.1%,Mo≤0.4%。还包括用于上述钢的制造方法和退火工艺。
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