通过斜坡-保载的球形纳米压痕法研究了Zr55Cu28Ni5Al10Nb2块体金属玻璃的室温蠕变行为.蠕变实验同时考虑了加载速率和峰值载荷水平的影响,并采用基于弹性-粘弹性对应原理的现象学法来描述材料的压痕蠕变行为.结果显示,蠕变位移显示了明显的速率和载荷依赖性.五组元Kelvin模型能很好地拟合蠕变位移-时间数据,不同加载速率条件下的拟合-预测效果非常好.对于缓慢的加载过程,斜坡段对蠕变行为的影响不可忽略.
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