Fracture of TWIP Steels

摘要：

　　The easy edge crack of TWIP steels was investigated in terms of fracture mechanism by using sharp notched samples pulled at room temperature and 300℃.Crack propagate along twin boundaries,leading to a quasi-cleavage fracture mode and low edge crack resistance of TWIP steel at room temperature.A physical model was introduced for the first time to explain the twin-related crack propagation behavior.The Griffith cleavage fracture was favored by the retarded emission of dislocation due to the restriction of twin boundaries.Moreover,this kind embrittlement can be removed by elevating temperature where deformation twins are not favored.

关键词： twin boundary crack propagation TWIP steels hole expansion

作者: LUO Zhichao HUANG Mingxin

作者单位: Department of Mechanical Engineering, the University of Hong Kong, Hong Kong, 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: 363-366

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）