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对SS304不锈钢进行了系统的室温、高温单轴和非比例多轴应变控制循环和应力控制循环行为的实验研究.重点讨论了温度变化对材料应变循环特性和棘轮行为的影响;同时也讨论了在同一温度、不同加载形式条件下材料的应变循环特性和循环棘轮行为特征.结果表明,SS304不锈钢的循环变形行为具有明显的温度效应,并且在400~600℃范围内,材料会体现出显著的动态应变时效特性.

参考文献

[1] CHABOCH J L;NOUAILHAS D .Constitutive modeling of ratcheting effects:Part I,Experimental facts and properties of classical models[J].ASME Journal of Engineering Materials and Technology,1989,111(04):384-392.
[2] OHNO N .Recent topics in constitutive modeling of cyclic plasticity and viscoplasticity[J].Applied Mechanics Reviews,1990,43(11):283-295.
[3] Guozheng Kang;Qing Gao .Uniaxial and non-proportionally multiaxial ratcheting of U71Mn rail steel: experiments and simulations[J].Mechanics of materials,2002(12):809-820.
[4] Ruggles M D;KREMPL E .The influence of test temperature on the ratcheting behavior of type SS304 stainless steel[J].ASME Journal of Engineering Materials and Technology,1989,111(04):378-383.
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