摘要
对304不锈钢在室温下进行了单轴应变控制下的应变棘轮变形与失效以及低周疲劳试验研究, 系统地揭示了材料在循环过程中的材料变形与失效行为。研究表明:材料的应变棘轮变形与失效既不同于单轴拉伸,也不同于相同应变幅值下的对称应变循环加载时的变形与失效,而是强烈地依赖于应变幅值与每一循环周次在最大拉应变处的应变增加量。观察到了一些有意义的结果。
In this paper, the tests of cyclic strain ratcheting and low cycle fatigue for 304 stainless steel under uniaxial cyclic straining were carried out to systematically explore the deformation and failure behavior of the material. The experimental study shows that the cyclic strain ratcheting deformation behavior of the material is different from either the uniaxial monotonic tensile one or the cyclic deformation one under the symmetrical cyclic straining with the same strain amplitude, and the strain ratcheting deformation and failure behaviors depend on both the plastic strain amplitude and the strain increment at the cyclic maximum strain. Some significant results were observed.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2004年第5期444-451,共8页
Nuclear Power Engineering
基金
国家自然科学基金(10372086)
教育部留学回国人员科研启动基金资助
关键词
304不锈钢
循环应变棘轮
低周疲劳
循环塑性
Cyclic loads
Deformation
Failure (mechanical)
Fatigue testing
Plasticity
Strain
