公开(公告)号：US12129527B2

公开(公告)日：2024-10-29

申请号：US15560468

申请日：2016-03-23

Applicant: ArcelorMittal

Inventor： Marie-Thérèse Perrot-Simonetta ,  Bernard Resiak ,  Ulrich Voll

IPC: C21D9/52 ,  C21D1/18 ,  C21D6/00 ,  C21D8/02 ,  C21D8/06 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

CPC classification number: C21D9/525 ,  C21D1/18 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0263 ,  C21D8/065 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005

Abstract: The present invention provides a part having a composition including, with the contents being expressed in weight-percent, 0.10≤C≤0.30, 1.6≤Mn≤2.1, 0.5≤Cr≤1.7, 0.5≤Si≤1.0, 0.065≤Nb≤0.15, 0.0010≤B≤0.0050, 0.0010≤N≤0.0130, 0≤Al≤0.060, 0≤Mo≤1.00, 0≤Ni≤1.0, 0.01≤Ti≤0.07, 0≤V≤0.3, 0≤P≤0.050, 0.01≤S≤0.1, 0≤Cu≤0.5, 0≤Sn≤0.1. A balance of the composition includes iron and unavoidable impurities resulting from the production method. The microstructure includes, in surface proportions, from 100% to 70% bainite, less than 30% residual austenite, and less than 5% ferrite. A manufacturing method is also provided.

公开(公告)号：US20180057909A1

公开(公告)日：2018-03-01

申请号：US15560468

申请日：2016-03-23

Applicant: ArcelorMittal

Inventor： Marie-Thérèse Perrot-Simonetta ,  Bernard Resiak ,  Ulrich Voll

IPC: C21D9/52 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/06 ,  C21D6/00 ,  C21D1/18

CPC classification number: C21D9/525 ,  C21D1/18 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0263 ,  C21D8/065 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

Abstract: The present invention provides a part having a composition including, with the contents being expressed in weight-percent, 0.10≦C≦0.30, 1.6≦Mn≦2.1, 0.5≦Cr≦1.7, 0.5≦Si≦1.0, 0.065≦Nb≦0.15, 0.0010≦B≦0.0050, 0.0010≦N≦0.0130, 0≦Al≦0.060, 0≦Mo≦1.00, 0≦Ni≦1.0, 0.01≦Ti≦0.07, 0≦V≦0.3, 0≦P≦0.050, 0.01≦S≦0.1, 0≦Cu≦0.5, 0≦Sn≦0.1. A balance of the composition includes iron and unavoidable impurities resulting from the production method. The microstructure includes, in surface proportions, from 100% to 70% bainite, less than 30% residual austenite, and less than 5% ferrite. A manufacturing method is also provided.