Vanadium Additions in New Ultra High Strength and Ductility Steels

摘要：

Kinetic thermodynamic modeling has been used to optimise the process parameters for microalloying high Mn austenitic TWIP cold strips with Vanadium and Nitrogen to promote an intense precipitation of sub 10 run intragranular V(C,N) particles during the continuous annealing step. The yield strength increase is 500 MPa/% wt. added V. A further interest lies in the amelioration of hydrogen induced delayed fracture (DF) in regions of cold formed parts with critically high residual tensile stresses. The beneficial macroscopic effect on DF is clearly demonstrated; however the physical mechanism governing the interaction between Vanadium and mobile hydrogen is still the subject of investigation.

关键词： TWIP high Mn astenite vanadium microalloying residual stress delayed fracture.

作者: SCOTT Colin CUGY Philippe

作者单位: Arcelor Mittal Research,Voie Romaine BP30320,57283 Maizière-lès-Metz,France

会议类型: 国际会议

会议名称: 2009 International Symposium on Automobile Steel(2009年汽车用钢生产及应用技术国际研讨会)

会议地点: 大连

会议语种:英文

页码: 211-221

在线出版日期: 2009-09-06（万方平台首次上网日期，不代表论文的发表时间）