FINITE ELEMENT MODELING OF TEMPERATURE DISTRIBUTION IN FIELD ACTIVATED SINTERING OF MoSi2-SiC COMPOSITE
Qiaodan Hu;Peng Luo;;Jianguo Li
上海交通大学 材料科学与工程学院
Cite this article:
Qiaodan Hu; Peng Luo; Jianguo Li. FINITE ELEMENT MODELING OF TEMPERATURE DISTRIBUTION IN FIELD ACTIVATED SINTERING OF MoSi2-SiC COMPOSITE. Acta Metall Sin, 2008, 44(10): 1253-1259 .
Abstract Field Activated Sintering (FAS) modeling was made and finite element simulation was done by means of computer aided finite element method. The results show that FAS temperature field was determined by an interaction among Joule heating of electric field, heat released by chemical reaction, and heat transferring characteristics of die-specimen system. Due to overlap of heats by Joule effect and chemical reactions, the highest temperature was in the center of the sample and a radius temperature gradient was established. That significantly took effects to uniformity of microstructure and densification degree. Therefore, it is important to control temperature gradient within the sample of FAS to prepare dense and fine grained bulk materials.
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