用于描述奥氏体/马氏体界面的修正模型
收稿日期: 2009-11-30
修回日期: 2010-02-10
网络出版日期: 2010-04-11
基金资助
国家自然科学基金项目50471014和U0774011资助
A MODIFIED MODEL USED TO DESCRIBE AUSTENITE/MARTENSITE INTERFACE
Received date: 2009-11-30
Revised date: 2010-02-10
Online published: 2010-04-11
Supported by
Supported by National Natural Science Foundation of China (Nos.50471014 and U0774011)
程宁 , 郭正洪 , 孟庆平 . 用于描述奥氏体/马氏体界面的修正模型[J]. 金属学报, 2010 , 46(4) : 418 -422 . DOI: 10.3724/SP.J.1037.2009.00800
A modified Landau polynomial was proposed to describe the structure features of austenite/martensite interface under the existence of an intrfacial preferrd state. When the elastic modulus of austenite, the energy of preferred state and thdriving force for martensitic transformation were selected as the variables, a transitional platform with a slow change in order parameter, i.e. scaled shear strain whose structure is neither austenite nor martensite, was found using Ginzburg–Landau theory. The energ and width of austenite/martensite interface were calculated. Based on these calculated results, some experimental phenomena during martensitic transformatin can be explaned perfectly. It is demonstrated that the current model is more universal.
Key words： martensite; Landau theory; interface
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