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对304不锈钢分别进行了高温单轴应变控制和应力控制下的系统循环试验揭示和分析了循环应变幅值、应变幅值历史以及温度历史对循环特性的影响以及应力幅值、平均应力及其历史对循环蠕变(棘轮效应)的影响研究表明,无论单轴应变循环特性还是非对称单轴应力下的棘轮效应不但依赖于当前温度和加载状态,而且依赖于其加载历史得到304不锈钢高温单轴循环行为的一些有意义的结果
The high temperature uniaxial strain control and the system cyclic test under stress control for 304 stainless steel respectively revealed and analyzed the influences of cyclic strain amplitude, strain amplitude history and temperature history on the cycle characteristics as well as the stress amplitude, average stress and its history The study on the effect of cyclic creep (ratcheting effect) shows that both the uniaxial strain cycling characteristics and the ratcheting effect under asymmetric uniaxial stress depend not only on the current temperature and the loading state, but also on the loading history of the 304 stainless steel high temperature uniaxial Some meaningful results of circular behavior