One-dimensional model of martensitic transformations

被引：16

作者：

Tang, M ^{[1
]}

Zhang, JH ^{[1
]}

Hsu, TY ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China

来源：

ACTA MATERIALIA | 2002年 / 50卷 / 03期

关键词：

phase transformations (martensite/shear; nucleation; growth; shape memory); theory; modeling; (thermodynamics; critical; phenomena);

D O I：

10.1016/S1359-6454(01)00370-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A modified Landau-Ginzburg theory for martensitic transformations is suggested. An accommodation strain energy in parent phase is added into the free energy of the system besides the Landau free energy and gradient energy which have been generally considered. Both the equilibrium state and the dynamic process of martensitic transformations are investigated by solving the equation of motion numerically. Two important features of martensitic transformations, i.e., transformational hysteresis and athermal transformation, can be displayed by the modified model. The results of numerical study of the model agree with experiments well, including surface martensite, thermoelastic and nonthermoelastic martensite formations, autocatalysis and burst transformation. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：467 / 474

页数：8

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