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REACTION MODEL IN Al-Ti-C SYSTEM

WANG Zidong , HU Hanqi(University of Science and Technology Beijing.Beijing , China)Li Qingchun(Harbin institute of Technology , Harbin.ChinaManuscript received 14 April 1995)

金属学报(英文版)

In this Paper,interaction coefficients among Al,Ti and C in Al-Ti-C ternary system and actual free energy of Al_3Ti,TiC and Al_4C_3,were calcutated via ternary alloy thermodynamic theory.The rsults show that,at low temperatures,Al_3Ti forms through the reaction of aluminium with titanium,and at high temperatures,the TiC forms hy the reaction of carbon with Al_3Ti.The reaction mechanism was verified by the experimental results.

关键词: :thermodynamics , null , null

SOLIDIFICATION MECHANISM OF Al / TiC INTRAGRANULAR COMPOSITES FABRICATED BY CONTACT REACTION METHOD

WANG Zidong , HU HanqiUniversity of Science and Technology Beijing. Beijing. ChinaLI Chunyu , LI Ting , CHAI ShichangBeijing Institute of Aeronautical Materials. Beijing. China

金属学报(英文版)

The behaviour of the particles in solidification inter face front was studied, and the equation of the critical interface velocity which related to the supercooling and the volume fraction of particles in the melt was obtained. By the mean time, the two solidification mechanisms of aluminium matrix intragranular composites was put forward.

关键词: aluminium matrix composite , null , null

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