Ti-based bulk metallic glass matrix composites with in situ precipitated β-Ti phase fabricated by spark plasma sintering

被引：16

作者：

Chen, Y. ^{[1
]}

Yang, C. ^{[1
]}

Zou, L. M. ^{[1
]}

Qu, S. G. ^{[1
]}

Li, X. Q. ^{[1
]}

Li, Y. Y. ^{[1
]}

机构：

[1] S China Univ Technol, Natl Engn Res Ctr Near Net Shape Forming Metall M, Guangzhou 510640, Guangdong, Peoples R China

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2013年 / 359卷

基金：

中国国家自然科学基金;

关键词：

Bulk metallic glass; Composite; Spark plasma sintering; Powder metallurgy; GRAINED TI66NB13CU8NI6.8AL6.2 COMPOSITES; MECHANICAL-PROPERTIES; ALLOY; CRYSTALLIZATION; MICROSTRUCTURE; PLASTICITY;

D O I：

10.1016/j.jnoncrysol.2012.09.028

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ti-based bulk metallic glass (BMG) matrix composites with in situ precipitated beta-Ti phase were fabricated by spark plasma sintering of amorphous (Ti66Nb13Cu8Ni6.8Al6.2)(1)B0.79C0.65 alloy powder with a wide Delta T-x of 102 K under a sintering pressure of 500 MPa. The wider Delta T-x and the smaller particle size for the as-synthesized (Ti66Nb13Cu8Ni6.8Al6.2)(1)B0.79C0.65 amorphous powder is present compared to B- and C-free amorphous powder. At a sintering temperature of 743 K, spherical nanocrystalline beta-Ti with a grain size of 5 nm was homogeneously precipitated in amorphous matrix. Meanwhile, the BMG matrix composite fabricated has a relative density of 98.1% and an amorphous phase volume fraction of 55.2%. However, the BMG matrix composites fabricated exhibit a brittle manner. The results obtained provide an alternative method for fabricating large-sized BMG matrix composites and parts by powder metallurgy. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.

引用

页码：15 / 20

页数：6

共 24 条

[1] Processing, microstructure and properties of ductile metal particulate reinforced Zr57Nb5Al10CU15.4Ni12.6 bulk metallic glass composites [J].