摘要
研究了超低碳316L、316LN奥氏体不锈钢在常温下的低周疲劳行为及组织结构变化规律。结果表明,材料在循环变形过程中呈现不同程度的硬化、软化,应变幅的增加促进硬化,缩短低周疲劳寿命。透射电镜分析表明,奥氏体内的组织结构的演变过程与循环应力特性曲线的变化规律相呼应。
The behaviour and alteration of substructure of the super-low carbon 316L and 316LN austenitic stainless steels have been investigated during low cycle fatigue at room temperature. The results showed that the material appears various degrees of cyclic hardening and softening during cyclic deformation. The hardening was favoured and the fatigue life was reduced by increasing strain amplitude. The microstructures analysed under TEM showed that the dislocation in austenite was revealed to be associated with the change of the cyclic stress characteristic curve.
出处
《理化检验（物理分册）》
CAS
1995年第6期18-20,共3页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
基金
国家自然科学基金资助课题
编号58971068
关键词
奥氏体不锈钢
低周疲劳
组织结构
不锈钢
Austenitic stainless steels, Low cycle fatigue, Substructure
