Abstract

Abstract The hardness and Young'modulus for two Cu-based bulk metallic glasses, Cu59Zr36Ti5 and Cu61Zr34Ti5, has been studied by nanoindentation in three different ways, including load rate control mode, load control mode, and cycles load control mode. Young's modulus of the specimen shows the dependence on loading rate when the loading rate is no more than 5 mN/s. The Young's modulus of both Cu59Zr36Ti5 and Cu61Zr34Ti5 decreases with the increasing of holding load and loading rate. But neither loading rate nor holding load has significant influence on hardness. Cyclic loading leads to slight hardening for Cu59Zr36Ti5, while Cu61Zr34Ti5 doesn't show such results. What's more, Cu61Zr34Ti5 exhibits obviously higher hardness and modulus than Cu59Zr36Ti5.

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