FRACTURE MODE AND PROCESS OF SiCw+B4Cp/MB15 MAGNESIUM MATRIX COMPOSITE
来源期刊：中国有色金属学报(英文版)1997年第3期
论文作者：Su Ying Zhang Guoding Wang Huimin Zhang Di Qin Jining
文章页码：109 - 113
Key words：magnesium composites； SiC whiskers； B4C particles； fracture
Abstract: The mechanical properties of the SiC w+B4Cp/MB15 extruded composite made by liquid infiltration technique were tested. It is concluded that the strength and E modulus of the composite are much higher than those of its matrix alloy by analysing its fracture appearance and fracture process observed with SEM; the fracture mode is the combination of cleavage and fibrous mode; cracks pass through whiskers in the fracture process which can be divided into three stages: void initiation, second critical elongation and crack buckling expansion.
