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Pulsating Fatigue Properties of Stainless Steels

机译:不锈钢的脉动疲劳特性

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The object in this study is to investigate the pulsating fatigue properties of ferritic and martenstic stainless steels using replica method. The main results obtained in this test are as follows; two kinds of ferrritic stainless steels show the same fatigue strength, even if there is difference in micro-structures due to charge of heat treatment condition, In addition, the fatigue limit of martenstic stainless steel shows higher than that of ferritic one by 230%. It is considered that the static mechanical properties relate to the mean value of micro-structures and the fatigue strength relates to the weakest portion of structures. In addition, the ratio between fatigue limit and hardness number becomes considerably smaller than that of conventional structural steels.
机译:本研究的目的是使用复制方法研究铁素体和马氏体不锈钢的脉动疲劳特性。该测试获得的主要结果如下:两种铁素体不锈钢的疲劳强度相同,即使由于热处理条件不同,其显微组织也不同。此外,马氏体不锈钢的疲劳极限比铁素体不锈钢的疲劳极限高230%。认为静态力学性能与微结构的平均值有关,疲劳强度与结构的最薄弱部分有关。另外,疲劳极限与硬度值之间的比变得比常规结构钢小得多。

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