MICROMECHANICS MODELING FOR THE CONSTITUTIVE BEHAVIOR OF POLYCRYSTALLINE SHAPE MEMORY ALLOYS .1. DERIVATION OF GENERAL RELATIONS
MICROMECHANICS MODELING FOR THE CONSTITUTIVE BEHAVIOR OF POLYCRYSTALLINE SHAPE MEMORY ALLOYS .1. DERIVATION OF GENERAL RELATIONS
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DOI：
10.1016/0022-5096(93)90060-s
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发表时间：
1993-01-01
影响因子：
5.3
通讯作者：
HWANG, KC
中科院分区：
文献类型：
--
作者：
SUN, QP;HWANG, KC
提出了一种描述多晶形状记忆合金在不同温度下的伪弹性和形状记忆行为的细观力学本构模型。该模型的推导是基于材料在变形过程中的热力学、细观力学和微观结构物理机制的分析，结果表明，材料在力学和/或热加载过程中的非弹性变形与某些温度、应力状态和加载历史相关的屈服面有关，这些屈服面在微观上分别对应于正向和反向转变(或重取向)过程。
A MICROMECHANICS constitutive model has been proposed in this paper to describe the pseudoelastic and shape memory behavior of polycrystalline shape memory alloys under various temperatures. The derivation of the model is based on the thermodynamics, micromechanics and microstructural physical mechanism analysis of the material during deformation and it is shown that the inelastic deformation of the material in the mechanical and/or thermal loading processes is associated with some temperature, stress state and loading history dependent yielding surfaces which microscopically correspond to the forward and reverse transformation (or reorientation) processes, respectively.