Cryogenic-temperature-induced structural transformation of a metallic glass

Xilei Bian, Gang Wang, Quing Wang, Baoan Sun, Ishtiaq Hussain, Qijie Zhai, Norbert Mattern, Jozef Bednarčík, Jürgen Eckert

Research output: Contribution to journalArticleResearchpeer-review

19 Citations (Scopus)


The plasticity of metallic glasses depends largely on the atomic-scale structure. However, the details of the atomic-scale structure, which are responsible for their properties, remain to be clarified. In this study, in-situ high-energy synchrotron X-ray diffraction and strain-rate jump compression tests at different cryogenic temperatures were carried out. We show that the activation volume of flow units linearly depends on temperature in the non-serrated flow regime. A plausible atomic deformation mechanism is proposed, considering that the activated flow units mediating the plastic flow originate from the medium-range order and transit to the short-range order with decreasing temperature.
Original languageEnglish
Pages (from-to)284-291
Number of pages8
JournalMaterials Research Letters [Elektronische Ressource]
Issue number4
Publication statusE-pub ahead of print - 30 Nov 2016

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