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The structural states of metallic glasses (MGs) have been described previously using concepts such as free volume and configurational potential energy. Here we discuss the inadequacy of these indicators by examining a Cu–Zr–Al MG model experiencing different cooling and relaxation history. The results identify the local (icosahedral) ordering as a fundamental process underlying structural relaxation, and the degree of order as a more sensitive and revealing structural indicator.
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Cheng et al. (2008) studied this question.
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