杨吉春,周莉,董梦瑶,张剑,栗宏伟

• 1:内蒙古科技大学材料与冶金学院

摘要(Abstract)：

在变形量为60%,应变速率为0.01~0.1 s-1,变形温度为950~1100℃的条件下,利用Gleeble-1500D热模拟机对不同成分316不锈钢进行了单道次压缩试验,通过分析真应力-真应变曲线、变形后组织、热变形激活能,得到增氮降镍对试验钢热变形行为的影响。结果表明,在热变形条件下,试验钢均发生了动态再结晶;增氮降镍后,提高了试样的变形抗力,其热变形激活能显著增加,由420.26 k J·mol-1分别提高到514.28和473.7 k J·mol-1,抑制了动态再结晶的发生。

关键词(KeyWords)： 增氮降镍;316不锈钢;热变形激活能;热变形方程

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51364031)

作者(Author): 杨吉春,周莉,董梦瑶,张剑,栗宏伟

DOI: 10.13289/j.issn.1009-6264.2015.06.025

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