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316不锈钢的非比例循环特性

杨显杰 , 高庆 , 何国求 , 蔡力勋

金属学报

本文对316L,316LN不锈钢进行了单轴及双轴非比例循环加载试验研究.对这两种钢的循环硬化、塑性流动特性以及单轴随动硬化特性进行了分析、发现这些材料的循环特性不但依赖于等效应变幅值、更依赖于应变路径.得到了这两种材料的循环变形的一些有意义的结果.

关键词: 316L不锈钢 , 316LN stainless steel , nonproportional cyclic plasticity , plastic flow , cyclic hardening

AN EXPERIMENTAL STUDY ON THE KINEMATIC HARDENING RULES FOR NONPROPORTIONAL CYCLIC PLASTICITY

Q. Gao , X.J. Yang and G.Z. Kang(Department of Applied Mechanics and Engineering , Southwest Jiaotong University , Chengdu 610031 , China )

金属学报(英文版)

An experimental investigation was cawted out of the cyclic saturated kinematic hardening of the solution treatment stainless steel 316L subjected to cyclic loading for seveml strain paths, such as uniaxial cycling, cireulan elliPtic, diamond, rectangular shapes. The evoluting tndectories of back stresses in deviatoric stress space were obtained, and the evolution of back stress mtes during cyclic saturuted loading was analyzed under the assumption that the yield sudece rudius at cyclic saturation is constant and the direction of plastic stmin rute coincides with the one of the out normal vector Of the yield sudece. Some significant results were obtained.

关键词: stainless steel 316L , null , null

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