The micro-zones formation of Zr-based bulk metallic glass composite fabricated by laser 3D printing

被引：8

作者：

Chang, Zexin ^{[1
]}

Ge, Yaqiong ^{[1
]}

Sun, Li ^{[2
]}

Wang, Wenxian ^{[3
]}

Zhou, Jun ^{[4
]}

机构：

[1] Taiyuan Univ Sci & Technol, Coll Mat Sci & Engn, 66 Waliu St, Taiyuan 030024, Shanxi, Peoples R China

[2] Norwegian Univ Sci & Technol, Dept Struct Engn, N-7491 Trondheim, Norway

[3] Taiyuan Univ Technol, Coll Mat Sci & Engn, 79 West Yingze St, Taiyuan 030024, Shanxi, Peoples R China

[4] Penn State Univ, Dept Mech Engn, Behrend Coll, Erie, PA 16563 USA

来源：

JOURNAL OF MANUFACTURING PROCESSES | 2022年 / 76卷

基金：

中国国家自然科学基金;

关键词：

Laser 3D printing; Bulk metallic glass composite; Crystallization; Nanoindentation behaviors; INDENTATION;

D O I：

10.1016/j.jmapro.2022.02.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, a Zr-based bulk metallic glass composite (BMGC) was successfully fabricated by laser 3D printing with pre-laid powders. The results showed that the printed bulk metallic glass composite was composed pri-marily (82.5 vol%) of amorphous phase along with a small fraction of intermetallic compounds. The crystalli-zation characteristics of different micro-zones in the as-printed BMGC were studied. It was found that the molten pool had a fully amorphous structure, while some nanocrystals were found in the re-melted zone, and both dendrites and nanocrystals were observed in the heat affected zone (HAZ). The nanoindentation results showed that the HAZ had the highest hardness, elastic modulus, and elastic recovery compared with the re-melted zone and molten pool zone. The forming mechanism of bulk metallic glasses composite was further studied by finite element analysis of the heating and cooling processes in laser 3D printing.

引用

页码：167 / 174

页数：8

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