TRIP钢塑性变形时加工硬化行为研究
Study on Working-hardening Behaviour of TRIP-assisted Steels During Plastic Deformation
定 巍, 江海涛, 唐 荻, 殷安民
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作者单位：北京科技大学 高效轧制国家工程研究中心, 北京 100083
中文关键字：TRIP钢； n值； 伸长率； 残余奥氏体
英文关键字：TRIP steel; n value; elongation; retained austenite
中文摘要：基于拉伸试验研究了一种TRIP钢在塑性变形时的加工硬化行为，同时利用XRD测量试样残余奥氏体及碳含量。研究结果表明：加工硬化指数(n值)的下降速度与伸长率存在对应关系，钢中残余奥氏体对n值变化有重大影响。
英文摘要：The working-hardening behaviour of TRIP-assisted steels during plastic deformation was investigated by tensile test. Meanwhile, the volume fraction of retained austenite and the carbon content were measured by X-ray diffraction patterns. The results indicate that the falling rate of working-hardening exponent (n) has corresponding to the total elongation. Furthermore, the volume fraction and carbon content of retained austenite have momentous effects on falling rate of working-hardening exponent.