朱向群,戴起勋,周明,孔德军

• 1:江苏大学材料科学与工程学院
• 2:江苏工业学院机械工程系

摘要(Abstract)：

采用慢应变试验法(SSRT)测试了2Cr13不锈钢在1020℃淬火及不同回火温度条件下的应力腐蚀开裂(SCC)特性,并利用电阻应变计传感器设计原理,测试了回火温度对2Cr13钢力学滞后的影响。结果表明,在270~420℃回火区间,随着回火温度升高,2Cr13钢强度略有增加,滞后略微减小,而应力腐蚀抗力则显著降低。分析认为,在试验温度区间,随温度升高,回火温度接近2Cr13钢敏化和第一类回火脆性温度,加之二次硬化效应,使得该材料应力腐蚀抗力随回火温度升高而显著降低;2Cr13钢力学滞后和其强度及亚结构有关,滞后误差随着材料强度增加而减少。

关键词(KeyWords)： 回火温度;2Cr13不锈钢;应力腐蚀开裂;力学滞后

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50575100);; 教育部新世纪优秀人才支持计划资助

作者(Author): 朱向群,戴起勋,周明,孔德军

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