Spatio-temporal Characteristics of Plastic Instability in Medium Mn AHSS Deformation

摘要：

　　Significant research has recently focused on the Third Generation Advanced High Strength Steels (Gen.3 AHSS) to achieve greater fuel efficiency while maintaining safety and comfort in todays automobiles.The combination of extremely high strength and ductility has been achieved through inter-critical annealing of medium manganese (5~10 weight percent of Mn) transformation induced plasticity (TRIP) steels.However,this kind of material referred to as Medium Mn AHSS has revealed plastic instability during deformation,which is critical for stamping application and crash performance.The present work systematically investigated the spatio-temporal characteristics of plastic instability in Medium Mn AHSS.It was found that this plastic instability behavior was significantly relying on sample geometry and loading condition.

关键词： medium Mn AHSS Luders band plastic instability

作者: SUN Li

作者单位: General Motors China Science Lab, Shanghai, 201206, China

会议类型: 国际会议

会议名称: the 1st International Conference on Automobile Steel & The 3rd International Conference on High Manganese Steels (第一届国际汽车用钢大会暨第三届高锰钢国际会议)

会议地点: 成都

会议语种:英文

页码: 629-632

在线出版日期: 2016-11-16（万方平台首次上网日期，不代表论文的发表时间）