High tensile plasticity and strength of a CuZr-based bulk metallic glass composite
High tensile plasticity and strength of a CuZr-based bulk metallic glass composite
复制标题
CuZr基大块金属玻璃复合材料的高拉伸塑性和强度
DOI：
10.1016/j.matdes.2015.10.117
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发表时间：
2016-01-15
影响因子：
8.4
通讯作者：
Sun, Jianfei
中科院分区：
文献类型：
--
作者：
Ning, Zhiliang;Liang, Weizhong;Sun, Jianfei
本文报道了一种在不降低高强度的情况下提高CuZr基块体金属玻璃拉伸塑性的新方法。在CuZr基合金中掺入Nb后，形成了一种兼具高强度、大拉伸塑性和强加工硬化效应的复合材料。Nb的加入导致单一的B2-CuZr相在玻璃基体中均匀分布。最佳的拉伸性能归因于B2-CuZr相的形变诱导马氏体相变，而B2-CuZr相又与玻璃基体相互作用。此外，断裂区的剧烈绝热加热也有助于拉伸塑性的提高。(C)2015爱思唯尔有限公司版权所有。
A new approach to improve the tensile ductility of CuZr-based bulkmetallic glasseswithout significant reduction in high strength is reported. After doping of Nb into CuZr-based alloy, a compositewas formedwith a combination of high strength, large tensile plasticity and strong work-hardening effect. The addition of Nb led to a uniform distribution of single B2-CuZr phase in the glassy matrix. The optimal tensile propertieswere attributed to the deformationinducedmartensitic transformation of the B2-CuZr phase, which in turn interacted with the glassy matrix. In addition, the drastic adiabatic heating on the fracture region also contributed to the increase in tensile plasticity. (C) 2015 Elsevier Ltd. All rights reserved.