Effect of loading rate on the serrated flow of a bulk metallic glass during nanoindentation
The nature of displacement burst features throughout the load-controlled instrumented indentation of a Mg65Cu25Y10 bulk metallic glass was investigated over four decades of loading rate with varying peak loads and tip geometry. Where observed in the load-displacement data, displacement burst frequency, size and duration were found to be inversely related to loading rate, despite hardness and stiffness being independent of this parameter. Based on this evidence, it is proposed that increasing...[Show more]
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