摘要
本文运用Ｇｌｅｅｂｌｅ—１５００热力模拟试验系统对２０ＭｎＭｏＮｉＣｒ核电用钢进行了恒温双道次间断压缩模拟。根据其流变应力曲线，分析了道次间恒温停留过程中的静态软化规律，并通过非线性回归分析得到静态软化百分比（Ｘ）与变形温度（Ｔ）、变形程度（ε）、原始晶粒直径（Ｄ）、道次间隔时间（ｔ）之间的定量关系，为进一步数值模拟提供可靠的判据。
advanced 'Gleeble -1500' thermal simulation testing apparatus was employed to conduct the simulation test of isothermal compress during double passes on the low alloy 20MnMoNiCr steel for the use of Nuclear power. Static state softening law during isothermal staying between double passes was analysed by flow stress curves between isothermal double passes. The quantitive relationshipe between static state softening fraction (X) and deformation temperatur(t). deformation (ε). deformation rate (s￣-1 ). primary grain size (D。). interval time between passes (t) were obtained by nonlinear regression analysis. The results provide a reliable criteria for further recrystalizing numerical simulation.
出处
《塑性工程学报》
CAS
CSCD
1996年第1期56-61,共6页
Journal of Plasticity Engineering
基金
国家重点自然科学基金
