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GuoYuanqiang; Tang bin; Zhu Zuchang; Yu Shaoluo(Shanghai University of Engineering Science )  
In this paper, transient temperature field in surface layer of metals induced by laser transformation hardening has been analyzed with 3-dimensional finite-difference method. In view of the disadvantages of previous medels, a new model has been put forward in which leaping heat flux at regular intervals has been adopted as an imitation of continuous scanning of laser,nd the“ medium”effect of coating during heat transfer,transformation temperature range and transfor mation latent heat,the changing of material thermol parameters along with the increasing of temperature has been taken into consider-ation. Good agreement is demonstrated with experimental data,and comparison is made with previous modeling methods .
【Fund】: 国家自然科学基金资助项目
【CateGory Index】: TG156.99
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