Cryogenic-temperature-induced structural transformation of a metallic glass
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In: Materials Research Letters [Elektronische Ressource], Vol. 5.2017, No. 4, 30.11.2016, p. 284-291.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - Cryogenic-temperature-induced structural transformation of a metallic glass
AU - Bian, Xilei
AU - Wang, Gang
AU - Wang, Quing
AU - Sun, Baoan
AU - Hussain, Ishtiaq
AU - Zhai, Qijie
AU - Mattern, Norbert
AU - Bednarčík, Jozef
AU - Eckert, Jürgen
PY - 2016/11/30
Y1 - 2016/11/30
N2 - 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.
AB - 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.
U2 - 10.1080/21663831.2016.1263687
DO - 10.1080/21663831.2016.1263687
M3 - Article
VL - 5.2017
SP - 284
EP - 291
JO - Materials Research Letters [Elektronische Ressource]
JF - Materials Research Letters [Elektronische Ressource]
SN - 2166-3831
IS - 4
ER -