Effects of the laser surface treatment on the mechanical properties of CuZr-based bulk metallic glasses

被引：0
|
作者：
GuoJuan Wu
Ran Li
ZengQian Liu
BingQing Chen
Tao Zhang
机构：
[1] Beihang University,Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering
来源：
Science China Physics, Mechanics and Astronomy | 2013年 / 56卷
关键词：
bulk metallic glasses; laser surface treatment; mechanical properties; precipitate;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Surfaces of three types of CuZr-based bulk metallic glasses (BMGs) were modified by laser surface treatment (LST), and the influence of the treatment on structure and mechanical properties of these alloys was investigated. The phase structure of as-cast and laser-treated samples was characterized by XRD and the morphology of the alloys after fracture was examined by SEM. The compressive plasticity of treated Cu47.5Zr47.5Al5 and Cu46.5Zr47.5Al5Co1 BMGs can be improved from 0.5% to 2.0% and from 1.2% to 5.7% respectively compared with the as-cast ones, while (Cu0.55Zr0.40Al0.05)99Er1 BMG shows insignificant change of plasticity. The improvement in plasticity is attributed to induced crystallization of B2 CuZr phase in the treated surface zone of selected metallic glasses.
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页码：925 / 927
页数：2
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