图书来源:二元合金相图及中间相晶体结构 二元合金相图及中间相晶体结构
作 者:唐仁政 田荣璋
出版时间:2009-05
定 价:320元
图书ISBN:978-7-81105-831-4
出版单位:中南大学出版社
Zhibo Dong 1,2),Shujuan Wang 2),Rui Ma 1),Yanhong Wei 1),Kuijing Song 2) and Guofu Zhai 2) 1) The State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,China 2) School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China
摘 要:Columnar grain growth with shear flow in molten pool of Ni-Cr alloy was simulated with a coupled model of grain growth and solute transport.The results indicate that shear flow alters solute distribution at the vicinity of columnar grains.The solute concentration gradient on the upstream side is greater,while that on the downstream side is smaller,leading to asymmetrical growth of columnar grains.In the interior of a columnar grain,solute concentration increases from the bottom to the dendrite tip,but the rate of increase tends to be reduced.The simulated results are consistent with the experiments.
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