Cooling rate-dependent yield behavior of metallic glass wires
Cooling rate-dependent yield behavior of metallic glass wires
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金属玻璃丝的冷却速率相关屈服行为
DOI：
10.1016/j.msea.2016.12.022
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发表时间：
2017-01-23
期刊：
影响因子：
6.4
通讯作者：
Zhai, Q. J.
中科院分区：
文献类型：
--
作者：
Hussain, I.;Tong, X.;Zhai, Q. J.
本文详细研究了熔体引出法制备的Cu50Zr50(at%)和Ni(56)Nb(44)金属玻璃(MG)线材随冷却速率变化的屈服行为。拉伸试验后，在断裂角测量的基础上，分析了不同直径MG丝的屈服行为。基于Mohr-Columb准则，对MG钢丝的粘结强度进行了评估。根据自由体积模型，定量预测了MG丝的粘结强度。阐明了玻璃相的屈服行为与自由体积之间的关系。
The current work presents an exhaustively study on cooling rate-dependent yield behavior of Cu50Zr50 (at%) and Ni(56)Nb(44)metallic glass (MG) wires fabricated by a melt-extraction technique. After tension test, based on the measurement of the fracture angle, the yield behavior of the MG wires with different diameters is analyzed. Based on the Mohr-Columb criterion, the cohesion strength of the MG wires is evaluated. According to the free volume model, the cohesion strength of the MG wires is quantitatively predicted. The correlation between the yield behavior and the quantity of free volume in the glassy phase is elucidated.