Synthesis of plastic Zr-based bulk metallic glass matrix composites by the copper-mould suction casting and the Bridgman solidification

被引：22

作者：

Qiao, J. W. ^{[1
]}

Zhang, Y. ^{[1
]}

Zheng, Z. L. ^{[1
]}

He, J. P. ^{[1
]}

Wei, B. C. ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 477卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Bridgman solidification; Composites; Plasticity; Shear bands; ENHANCED PLASTICITY; MECHANICAL-PROPERTIES; AMORPHOUS-ALLOYS; DUCTILITY; MICROSTRUCTURE; TEMPERATURE; STRENGTH; BEHAVIOR; TENSILE;

D O I：

10.1016/j.jallcom.2008.10.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Zr-based bulk metallic glass matrix composites with the composition of Zr56.2Ti13.8Nb5.0Cu6.9Ni5.6Be12.(5) were synthesized by the copper-mould suction casting and the Bridgman solidification. The composite, containing a well-developed flowery beta-Zr dendritic phase, was obtained by the Bridgman solidification with the withdrawal velocity of 0.8 mm/s and the temperature gradient of 45 K/mm, and the ultimate strength of 2050 MPa and fracture plastic strain of 14.6% of the composite were achieved, which was mainly interpreted by the homogeneous dispersion of bcc beta-Zr phase in the glass matrix. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.

引用

页码：436 / 439

页数：4

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