【摘要】 采用渗流铸造法制备出了钨丝增强ZrAlNiCuSi块体非晶复合材料,在压缩条件下复合材料表现出弹性-完全塑性的应力-应变行为,和未复合的大块非晶相比,总应变量提高600％以上.非晶复合材料塑性提高的原因是钨丝阻碍了非晶基体剪切带的滑移,诱发多个剪切带的产生,同时滑移的面积增大的结果.复合材料的破坏方式与钨丝体积分数有关,在体积分数小于40％时一般为剪切破坏,大于60％时为纵向劈裂破坏,介于（40-60）％之间时,在钨丝与界面结合良好的情况下,趋于剪切破坏,否则为劈裂的破坏方式.更多还原

【Abstract】 Tungsten fiber (Wf) reinforced ZrAlNiCuSi metallic glass composites were fabricated by melt infiltrating casting method, and their plastic behaviors under compression were investigated. Wf reinforcement increased compressive strain to failure by over 600% compared to the unreinforced ZrAlNiCuSi bulk metallic glass. The increase in compressive toughness cornes from the fibers restricting shear band propagation, promoting the generation of multiple shear bands and additional fracture surface area. The compressive failure mode changed from a single shear band to multiple shear bands and to localized fiber bucking and tilting as Wf volume fraction increasing. The reason for the increased plastic properties was discussed.更多还原