您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 3    June 2001

[PDF Download]    [Flash Online]

    

Multiple steady state phenomenon
in martensitic transformation
QIN Wen(覃  文)1,2, CHEN Zhen-hua(陈振华)1,
HUANG Pei-yun(黄培云)1, ZHUANG Ying-hong(庄应烘)2

1. Nonequilibrium Materials Research Institute,
Central South University,Changsha 410083, P.R.China;
2. Institute of Materials Science, Guangxi University,
Nanning 530004, P.R.China

Abstract: Based on the basic facts that the martensitic transformation is a physical phenomenon which occurs in nonequilibrium conditions and there exists the feedback mechanism in the martensitic transformation, the dynamical processes of the isothermal and athermal martensitic transformations were analyzed by using nonlinear theory and a bifurcation theory model was established. It is shown thata multiple steady state phenomenon can take place as austenite is cooled, and the transitions of the steady state temperature between the branches of stable steady states can be considered the transformation from austenite to martensite. This model can estimate the starting temperature of the martensitic transformation and explain some experimental features of the martensitic transformation such as the effects of cooling rate, fluctuation and austenitic grain size on the martensitic transformation.

 

Key words:  martensitic transformation; multiple steady states; steady state transition

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn