Acta Metall Sin  1997, Vol. 33 Issue (4): 432-436    DOI:

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REACTION AND FORMING MECHANISM OF PRODUCTS IN INTERFACE OF CF/Al-4.5Cu METAL MATRIX COMPOSITES

CHU Shuangjie;WU Renjie (Shanghai Jiaotong University; Shanghai 200030)(Manuscript received 1996-03-18; in revised form 1996-10-21)

CHU Shuangjie;WU Renjie (Shanghai Jiaotong University; Shanghai 200030)(Manuscript received 1996-03-18; in revised form 1996-10-21). REACTION AND FORMING MECHANISM OF PRODUCTS IN INTERFACE OF CF/Al-4.5Cu METAL MATRIX COMPOSITES. Acta Metall Sin, 1997, 33(4): 432-436.

Abstract References Related Articles Recommended Metrics Download:  PDF(1028KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The interfacial reaction and its mechanism during the solidification process of CF/Al-4.5Cu metal matrix composite produced by squeeze casting method were studied.When the temperature of interfacial reaction is above 773 K, Al4C3 phase was formed spontaneously, and the activation energy of reaction, Q, is about 254 kJ / mol. The regular pattern of crystallization and growth of Al4C3 phase shows that Al4C3 phase nucleated on the surface of carbon fiber (CF) first, then the carbon atom travels along the new formed Al4C3 phase or melted aluminum alloy. On the meanwhile, the Al atoms diffuse through the Al4Ca phase boundaries, interstices and defects among Cu atoms, or between Cu and Al atoms.The shape of Al4C3 phase is stick-like. The CuAl2 phase has also formed, and it nucleates on the surface of CF or Al4C3 phase and grows gradually by eutectic reaction. In addition, a theoretical model of reaction mechanism in the interface of CF/Al-4.5Cu metal matrix composites is suggested, the whole reaction process can be divided into four stages: (1)Forming active sites on the CF surface; (2) Al4C3 phase has nucleated at the active sites; (3)Al4C3 phase grows continuously, and CuAl2 phase nucleat; (4) CuAl2 phase grows continuously. Key words:  metal matrix composite      interface      CuAl_2      Al_4C_3      diffusion      Received:  18 April 1997      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1997/V33/I4/432 1 Khan M A,Rohatgi P K.J Mater Sci,1995;30:3711 2 Henriksen B R,Johnsen T E.Mater Sci Technol,1990;6:857 3 Patankar S N,Gopinathan V,Ramakrishnan P.Scr Metall Mater,1990;24:2197 4 储双杰.上海交通大学博士学位论文,1996 5 Hyung-Suk Yoon,Akimitsu Okura.SAMPE J, 1990;26(3):19 6 杨海宁,顾明元,蒋为吉,张国定, 材料工程,1994;(8): 63 7 Khan I H. 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