The effect of Si upon the interfacial reaction characteristics in SiCp/Al-Si system composites during multiple-remelting

The composite interfaces play an important role in determining the resultan t composite properties, especially the development of interfacial reaction during remelting is critical to the commercialization and sustainable-devel opment of metal matrix composites. In this paper, the interfacial reaction characteristics of SiCp/Al-Si system composites during multiple-remelting w ere investigated by Differential Scanning Calorimeter (DSC). It was found t hat the interfacial reactions were not sensitive to remelting number, remel ting temperature and reinforcement volume fraction after a degree of reacti on, and the results also suggested that the preventation effects of Si upon the interfacial reaction SiCp/Al were mainly attributed to the Si released from the interfacial reaction, while the original Si content in the master alloy also has the same effect only after a given Si content. (C) 1999 Klu wer Academic Publishers.