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针对奥氏体0Cr20Ni12Mn5Mo2Nb N钢开展了系列应变幅的循环加载试验,分析了其循环应力应变特性,结果表明,循环全过程中真应力和真应变呈指数关系,基于该指数关系提出了描述循环应力应变关系的本构模型:σ=σ0+α·exp(β·ε)。
A series of cyclic strain loading tests on austenite 0Cr20Ni12Mn5Mo2NbN steel were carried out. The cyclic strain characteristics were analyzed. The results show that the true stress and true strain are exponential during the whole cycle. Based on the exponential relationship, The constitutive model of strain relation: σ = σ0 + α · exp (β · ε).