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
Yunhui Du,Peng Zhang ,Jun Zhang and Shasha Yao School of Mechanical & Controlled Engineering,Beijing Jiaotong University,Beijing 100044,China
摘 要：The mechanical stirring of A356-2.5 vol.% SiC p liquid was conducted in a cylindrical crucible by a straightblade stirrer.The radial distribution of SiC particles in A356 liquid was studied under the conditions of 25 deg.for gradient angle α of blade and 10 mm/s for speed of moving up and down of stirrer.The results show that there exists a nonlinear relationship between rotating speed of stirrer and radial relative deviation of SiC p content in A356 liquid between the center and the periphery of crucible.The greater the rotating speed of stirrer is,the bigger the radial relative deviation of SiC p content in A356 liquid becomes and the more nonhomogeneous the radial distribution of SiC particles in A356 liquid turns.In addition,when the rotating speed of stirrer is about 200 r/min,the vertical distribution of SiC particles in A356 liquid is relative uniform.It can be seen that the nonhomogeneous distribution of SiC particles in A356 liquid results from the nonhomogeneous radial distribution of SiC particles in A356 liquid in straight-blade mechanical stirring ultimately.
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