公开(公告)号：US20150078954A1

公开(公告)日：2015-03-19

申请号：US14552985

申请日：2014-11-25

Applicant: ARCELORMITTAL FRANCE

Inventor： Mohamed BOUZEKRI ,  Michel FARAL ,  Colin SCOTT

IPC: C22C38/58 ,  C22C38/42 ,  C22C38/38 ,  C22C38/00 ,  C22C38/22 ,  C22C38/20 ,  C22C38/06 ,  C22C38/02 ,  C22C38/44 ,  C22C38/34

CPC classification number: C22C38/58 ,  B21B3/02 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0273 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/34 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  H01M4/8605 ,  H01M4/8807 ,  H01M4/8817 ,  H01M4/8853 ,  H01M4/8892 ,  H01M4/9075 ,  H01M4/925 ,  H01M8/0232 ,  H01M8/1004 ,  Y02E60/50 ,  Y02P70/56

Abstract: A cold-rolled austenitic iron/carbon/manganese steel sheet is provided. The strength of which is greater than 950 MPa, the product (strength (in MPa)×elongation at fracture (in %)) of which is greater than 45000 and the chemical composition of which includes, the contents being expressed by weight 0.5%≦C≦0.7%, 17%≦Mn≦24%, Si≦3%, Al≦0.050%, S≦0.030%, P≦0.080% and N≦0.1%. A remainder of the composition includes iron and inevitable impurities resulting from the smelting. A recrystallized fraction of the structure of the steel is greater than 75%, a surface fraction of precipitated carbides of the steel is less than 1.5% and a mean grain size of the steel is less than 6 microns. A reinforcing element is also provided.

Abstract translation: 提供冷轧奥氏体铁/碳/锰钢板。 其强度大于950MPa，产品（强度（MPa）×断裂伸长率（％））大于45000，其化学组成包括含量以重量计0.5％＆nlE ; Cn1; 0.7％，17％和nlE; Mn和nlE; 24％，Si＆NlE; 3％，Al＆amp; NlE; 0.050％，S＆amp; N; 0.030％，P＆NlE; 0.080％和N＆lt; 组合物的其余部分包括由冶炼产生的铁和不可避免的杂质。 钢结构的再结晶部分大于75％，钢的沉淀碳化物的表面分数小于1.5％，钢的平均晶粒尺寸小于6微米。 还提供了增强元件。

公开(公告)号：US20160010187A1

公开(公告)日：2016-01-14

申请号：US14672906

申请日：2015-03-30

Applicant: ARCELORMITTAL FRANCE ,  THYSSENKRUPP STEEL EUROPE AG

Inventor： Colin SCOTT ,  Philippe CUGY ,  Christian ALLELY

IPC: C22C38/16 ,  C22C38/06 ,  C22C38/02 ,  B32B15/01 ,  C22C38/04 ,  C22C38/08 ,  C23C2/06 ,  C22C38/12 ,  C22C38/00

CPC classification number: C21D9/46 ,  B32B15/013 ,  C21D1/26 ,  C21D1/42 ,  C21D1/767 ,  C21D6/001 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0236 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C28/021 ,  C23C28/023 ,  C23C28/025 ,  C23C28/028 ,  Y02P10/253 ,  Y10T428/12799

Abstract: An austenitic steel sheet excellent in resistance to delayed cracking is provided. The composition of said steel comprises in weight: 0.35%≦C≦1.05% 15%≦Mn≦26% Si≦3% Al≦0.050% S≦0.030% P≦0.080% N≦0.1%, at least one metallic element X chosen among vanadium, titanium, niobium, molybdenum, chromium 0.050%≦V≦0.50%, 0.040%≦Ti≦0.50% 0.070%≦Nb≦0.50% 0.14%≦Mo≦2% 0.070%≦Cr≦2%. The composition may optionally include B, Ni and/or Cu. The remainder of the composition includes iron and unavoidable impurities inherent to fabrication, including hydrogen. The quantity Xp of the at least one metallic element under the form of carbides, nitrides or carbonitrides is, in weight: 0.030%≦Vp≦0.40% 0.030%≦Tip≦0.50% 0.040%≦Nbp≦0.40% 0.14%≦Mop≦0.44% 0.070%≦Crp≦0.6%. The hydrogen content Hmax designating the maximal hydrogen content that can be measured from a series of at least five specimens, and the quantity Xp, in weight, is such that: 1000  H max X P ≤ 3.3 .

Abstract translation: 提供了耐延迟开裂性优异的奥氏体钢板。 所述钢的组成包括：0.35％＆lt; NlE; C＆NlE; 1.05％15％＆NlE; Mn＆NlE; 26％Si＆NlE; 3％Al＆NlE; 0.050％S＆lt; E30; 0.030％P＆lt; 0.080％N＆lt; 元素X选自钒，钛，铌，钼，铬0.050％＆nlE; V＆nlE; 0.50％，0.040％＆nlE; Ti＆NlE; 0.50％0.070％＆NlE; Nb＆nlE; 0.50％0.14％＆NlE; Mo＆NlE; 2％0.070％ Cr＆nlE; 2％。 该组合物可任选地包括B，Ni和/或Cu。 组合物的其余部分包括制造中固有的铁和不可避免的杂质，包括氢。 碳化物，氮化物或碳氮化物形式的至少一种金属元素的量Xp的重量比为：0.030％＆lt; NlE; Vp＆nlE; 0.40％0.030％＆lt; Tip＆nlE; 0.50％0.040％＆nlE; Nbp＆nlE; 0.40％ ＆nlE; Mop＆nlE; 0.44％0.070％＆nlE; Crp＆nlE; 0.6％。 指定可从一系列至少五个试样测量的最大氢含量的氢含量Hmax，重量的Xp值为：1000Hmax×P≤3.3。

公开(公告)号：US20150078955A1

公开(公告)日：2015-03-19

申请号：US14553033

申请日：2014-11-25

Applicant: ARCELORMITTAL FRANCE

Inventor： Mohamed BOUZEKRI ,  Michel FARAL ,  Colin SCOTT

IPC: C22C38/58 ,  C22C38/42 ,  C22C38/38 ,  C22C38/34 ,  B21B3/02 ,  C22C38/20 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C22C38/44 ,  C22C38/22

CPC classification number: C22C38/58 ,  B21B3/02 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0273 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/34 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  H01M4/8605 ,  H01M4/8807 ,  H01M4/8817 ,  H01M4/8853 ,  H01M4/8892 ,  H01M4/9075 ,  H01M4/925 ,  H01M8/0232 ,  H01M8/1004 ,  Y02E60/50 ,  Y02P70/56

Abstract: A hot-rolled austenitic iron/carbon/manganese steel sheet is provided. The strength of which is greater than 900 MPa, the product (strength (in MPa)×elongation at fracture (in %)) of which is greater than 45000 and the chemical composition of which includes, the contents being expressed by weight 0.5%≦C≦0.7%, 17%≦Mn≦24%, Si≦3%, Al≦0.050%, S≦0.030%, P≦0.080% and N≦0.1%. A remainder of the composition includes iron and inevitable impurities resulting from the smelting. A recrystallized fraction of the structure of the steel is greater than 75%, a surface fraction of precipitated carbides of the steel is less than 1.5% and a mean grain size of the steel is less than 18 microns. A reinforcing element is also provided.

Abstract translation: 提供热轧奥氏体铁/碳/锰钢板。 其强度大于900MPa，产品（强度（MPa）×断裂伸长率（％））大于45000，其化学组成包括内容物重量为0.5％＆nlE ; Cn1; 0.7％，17％和nlE; Mn和nlE; 24％，Si＆NlE; 3％，Al＆amp; NlE; 0.050％，S＆amp; N; 0.030％，P＆NlE; 0.080％和N＆lt; 组合物的其余部分包括由冶炼产生的铁和不可避免的杂质。 钢的结构的再结晶分数大于75％，钢的沉淀碳化物的表面分数小于1.5％，钢的平均晶粒尺寸小于18微米。 还提供了增强元件。