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. 12    No. 6    December 2002

[PDF Download]    [Flash Online]

    

Numerical simulation on rapid melting and
nonequilibrium solidification of pure metals and binary alloys
HUI Xi-dong(惠希东)1, CHEN Guo-liang(陈国良)1,
YANG Yuan-shong(杨院生)2, HU Zhuang-qi(胡壮麒)2

1. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing,Beijing 100083, China;
2. Shenyang National Laboratory for Material Research, Institute of Metal Research,
Chinese Academy of Sciences, Shenyang 110015, China

Abstract:A heat and mass transfer modelling containing phase transformation dynamics is made for pure metals and binary alloys under pulsed laser processing. The nonequilibrium effects of processing parameters and physical properties are evaluated on the melting and solidification of pure metals (Al, Cu, Fe and Ni) and Al-Cu alloys. It is shown that the energy intensity of laser beam and physical properties of metals and the solute concentration of alloys have important effect on the interface temperature, melting and solidification velocity, melting depth and non-equilibrium partition coefficient. This situation is resulted from the interaction of heat transfer, redistribution of solute, solute trapping and growth kinetics. 

 

Key words:  rapid melting; nonequilibrium solidification; pulsed laser processing; heat and mass transfer; growth kinetics

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