Spray formed Al-based amorphous matrix nanocomposite plate

被引：13

作者：

Zhuo, Longchao ^{[1
]}

Yang, Bin ^{[2
]}

Wang, Hui ^{[1
]}

Zhang, Tao ^{[1
]}

机构：

[1] Beihang Univ, Key Lab Aerosp Mat & Performance, Minist Educ, Dept Mat Sci & Engn, Beijing 100191, Peoples R China

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

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Metallic glasses; Rapid-solidification; Microstructure; Mechanical properties; PHASE-FORMATION; SHEAR BANDS; MICROSTRUCTURE; COMPOSITES; EVOLUTION; ALLOY;

D O I：

10.1016/j.jallcom.2011.02.125

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：

A novel Al86Si0.5Ni4.06Co2.94Y6La0.5 amorphous matrix nanocomposite plate with a rough diameter of 200mm and a maximum thickness of 12mm has been prepared by spray-forming. The microstructure gradient is observed, with 91.7 vol.% amorphous phase for the bottom region, 78% for the middle, and 54.3% for the top. The nanoindentation tests reveal its high microhardness of similar to 420 HV. The microstructure characterization indicates that the improved mechanical properties may be attributed to the homogeneously dispersed nano-scale fcc-Al in the amorphous matrix. This work further proved the feasibility of achieving substantial fraction of amorphous phase for bulk Al-based alloys by spray forming. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：L169 / L173

页数：5

共 29 条

[1] Amorphous phase formation in spray deposited AlYNiCo and AlYNiCoZr alloys [J].