Abstract
In this study, influences of impurity concentration tuned by mixing sponge Zr and high-purity Zr on thermal stability and mechanical properties of a super-multicomponent Zr50Ti4Y1Al10Cu25Ni7Co2Fe1 BMG were investigated. The results show that, different concentrations of impurities in Zr raw materials have inconspicuous influences on glass transition temperature (T g ) and crystallization temperature (T x ), but can affect the crystallization process of this BMG. Moreover, it is interesting that, the plasticity of this alloy reaches a maximum value when using 80% sponge Zr + 20% high-purity Zr, indicating that proper amount of impurities have positive effects on mechanical properties of this BMG, and such phenomenon may be caused by the formation of nano-crystals in the glassy matrix. This study provides a guideline for the exploration of Zr-based BMGs which are applicable for industrial production.
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