摘要
TRIP钢的塑性取决于残余奥氏体的含量及其相变速度.研究TRIP钢中残余奥氏体在单向拉伸变形下的相变行为,首先回顾了TRIP钢板的研究进展,然后对一种低碳硅锰系TRIP700钢板在单向拉伸变形下的力学性能和相变性能进行了试验研究,并用扫描电镜方法分析了该TRIP钢在变形过程中微观组织的变化.结果表明,该低碳硅锰系TRIP钢板兼有高强度和高韧性的特点,在单向拉伸变形中残余奥氏体的含量与等效应变的关系可用来logfγ0-logfγ=kε.表示.
The amount of retained austenite and its transformation velocity ensured the plasticity of TRIP steels. To investigate the transformation behavior of retained austenite in uniaxial tensile, the recent development of TRIP steels was reviewed and then mechanical properties and transformation behavior of a low carbon Si-Mn TRIP700 sheet steel were studied experimentally in this paper.The variation of microstructures during forming was analyzed with the help of scanning electron micrograph. The results indicated that this kind of low carbon Si-Mn TRIP sheet steels combine high strength and high ductility. And the relationship between the volume fraction of retained austenite and equivalent strain in uniaxial tensile can be expressed as logf_(γ_0)-logf_γ=kε.
出处
《材料科学与工艺》
EI
CAS
CSCD
2004年第4期433-435,共3页
Materials Science and Technology
关键词
TRIP钢
单向拉伸
锰系
残余奥氏体
钢板
相变行为
变形
并用
高韧性
研究
transformation-induced plasticity
uniaxial tension
retained austenite
transformation behavior
experimental study
