High Cycle Fatigue Properties of SUS 304 Stainless Steel under Load-Increasing Conditions.
High Cycle Fatigue Properties of SUS 304 Stainless Steel under Load-Increasing Conditions.
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负载增加条件下 SUS 304 不锈钢的高周疲劳性能。
DOI：
10.1299/kikaia.65.1684
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Daigo Kinpara
中科院分区：
文献类型：
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作者：
T. Ogawa;K. Tokaji;Daigo Kinpara
在旋转弯曲和拉-压载荷下，研究了不同循环应力幅σa增大条件下的高周疲劳性能。疲劳试验还使用了循环预加载的试件。用X射线衍射法测定了马氏体相变量和残余应力。在2赫兹的旋转弯曲试验和拉伸压缩试验中，观察到了明显的诱引效果。应力-应变响应表明，疲劳极限以下的循环载荷引起的循环功硬化是共轭效应，而在最后一步应力循环过程中，由于温度升高导致的循环功软化。在一些旋转弯曲试件中检测到马氏体相变，而在拉伸压缩试件中未检测到马氏体相变，这表明马氏体相变不是循环加工硬化的控制行为。在具有同轴效应的试件表面测量了压缩残余应力，认为这对同轴效应起着重要作用。
High cycle fatigue properties of austenitic stainless steel SUS 304 were investigated for various conditions of cyclic stress amplitude σa-increasing tests under rotating bending and tension-compression loadings. Fatigue tests were also performed using specimens subjected to cyclic preloading. X-ray diffraction methods were utilized to measure the amount of martensitic transformation and residual stress. A marked effect of coaxing was observed under rotating bending tests and tension compression tests at 2 Hz. Stress-strain response revealed that the coaxing effect was caused by cyclic work hardening due to cyclic loading below the fatigue limit, but cyclic work softening due to temperature increase took place during stress cycling at the final step. Martensitic transformation was detected for some rotating bending specimens but not the tension compression specimens, which suggests that it is not the controlling behavior for the cyclic work hardening. Compressive residual stress was measured at the surface of the specimens exhibiting coaxing effect, which was considered to play an important role on the coaxing effect.