摘要
本文采用Gleeble-3500热模拟试验机针对铸态1Mn18Cr18N奥氏体不锈钢,在应变速率0.005~0.1S-1、变形温度950oC^1200oC条件下,进行了压缩热变形试验,研究了奥氏体不锈钢热变形力学行为和再结晶规律,计算得到热变形激活能为420kJ/mol,并计算得到了这种奥氏体不锈钢的热变形方程ε=1.9*1017[sinh(0.007σ)]4.08exp[-42099/(RT)]。通过金相组织观察可知,该奥氏体不锈钢在较高的温度和较低的应变速率下,将发生动态再结晶。
The hot deformation of as-cast austerdtic Stainless Steel 1Mn 18Crl 8N under the strain rate of 0.005~0.1S-1 and the temperature of 950~1200℃ by Gleeble 3500 was carried out. Hot deformation behavior and dynamic recrystallization were investigated. The hot deformation activation energy 420kJ/mol was calculated and hot deformation equation ε=1.9＊1017[sinh（0.007σ）]4.08exp[-42099/（RT）] was obtained. The dynamic recrystallization of as-cast austenitic Stainless Steel 1Mn18Cr18N will take place under higher temperature and lower strain rate.
出处
《大电机技术》
北大核心
2014年第5期31-34,共4页
Large Electric Machine and Hydraulic Turbine
基金
国家"863"课题<先进超超临界火电机组关键叶片和护环钢开发>(编号:2012AA03A502)
关键词
热变形
动态再结晶
激活能
hot deformation
dynamic recrystallization
activation energy
