Abstract Low-cycle fatigue tests were performed on metastable austenitic steel at two initial material states, the as-received, with a high crystal defect density, and the solution treated one, with fewer crystal defects. Cyclic curves have shown different hardening behavior depending on the initial material states. To understand these differences, the back and friction stresses were studied from the hysteresis loop analysis. The correlation of these results with the volume fraction of induced martensite and the observed microstructure revealed that the cyclic hardening behavior strongly depends on the existence of potential martensite nucleation sites.

中文翻译：

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商业AISI 304不锈钢在循环加载过程中的应变诱发马氏体转变过程

摘要 对亚稳态奥氏体钢在两种初始材料状态下进行了低周疲劳试验，即原样具有高晶体缺陷密度和固溶处理一种具有较少晶体缺陷。根据初始材料状态，循环曲线显示出不同的硬化行为。为了理解这些差异，通过滞后回线分析研究了背应力和摩擦应力。这些结果与诱导马氏体的体积分数和观察到的微观结构的相关性表明，循环硬化行为强烈依赖于潜在马氏体形核位点的存在。