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LIU Qingmin , JIAO Yuning , YANG Yuamheng , HU ZhuangqiInstitute of Metal Research. Chinese Academy of Sciences , Shenyang , China Manuscript received 26 April , 1994
金属学报(英文版)
A theoretical analysis was presented to produce gradient composite by centrifugal casting. Particle movement in liquid metal is described and gradient distribution of particles in composite is calculated in a centrifugal field. The factors affected the gradient distribution are discussed in detail. There exist composite zone and blank zone in gradient composite, which was proved by experiments. Finally, a theoretical analysis is given to explain the above mentioned particle distribution.
关键词: gradient composite , null
JIAO Yuning , LIU Qingmin , YANG Yuansheng , HU Zhangqi(Institute of Metal Research , Chinese Academy of Sciences , Shenyang , ChinaManuscript received 10 February 1995)
The model of effective segregation coefficient(Keff) of solute atoms has been developed by considering the effect of environment work on barrier potential of atom motion at solid/liquid interface.It was found that not only the amount but also the type of environ ment work strongly affected the Keff in addition to the growth velocity R.
关键词: :environment work , null , null
