论文部分内容阅读
本文研究了17V.-％SiC_W/ZL109Al复合材料的微观结构和性能。透射电镜观察和能谱分析发现,在复合材料中Al扩散到SiC晶须内部,并且在晶须/基体界面处有位错存在,拉伸试验结果表明,在573和733K温度下热暴露和热循环都导致复合材料强度降低,在733K加热时间相同的条件下热暴露引起复合材料强度的降低比热循环引起强度的降低强烈。此外,SiC_W/Al复合材料还具有高的耐磨性,在所研究的晶须含量范围内(V_f=11-17％),晶须含量对复合材料的耐磨性几乎没有影响。
In this paper, the microstructure and properties of 17V .-% SiC_W / ZL109Al composites were studied. Transmission electron microscopy and energy dispersive spectroscopy revealed that Al diffused into SiC whiskers inside the composites and had dislocations at the whisker / matrix interface. Tensile tests showed that heat exposure and heat at 573 and 733 K The cycling resulted in a decrease in the strength of the composites. Thermal exposure at 733 K resulted in a decrease in the strength of the composites as compared to the decrease in strength due to thermal cycling. In addition, the SiCW / Al composites also have high wear resistance. The whisker content has little effect on the wear resistance of the composites for the range of whisker contents (Vf = 11-17%).