采用纳米压痕法研究了Mg6 Cu28Gd11和加入微量镉后(Mg61Cu28Gd11)99.5Cd0.5块体非晶合金的室温压痕蠕变行为,并通过获得的蠕变位移、蠕变速率敏感指数和蠕变柔量分析了合金的蠕变机制.结果表明:两种非晶合金都具有较低的室温蠕变敏感指数,其室温蠕变机制主要为局部剪切流变,特别是加入微量镉后非晶合金具有更高的硬度和弹性模量、更低的蠕变速率敏感指数和更小的蠕变柔量,具有更好的抗蠕变性能和更低的应力松弛状态.
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