Tensile properties and thermal stability of ZnO-coated aluminum borate whiskers reinforced 2024Al composite

被引：13

作者：

Yue, H. Y. ^{[1
]}

Guo, E. J. ^{[1
]}

Fei, W. D. ^{[2
]}

Wang, L. P. ^{[1
]}

机构：

[1] Harbin Univ Sci & Technol, Sch Mat Sci & Engn, Harbin 150040, Peoples R China

[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 06期

关键词：

Composites; ZnO coating; Tensile properties; Thermal stability; Interface; MECHANICAL-PROPERTIES; MATRIX COMPOSITES; INTERFACE; BEHAVIOR;

D O I：

10.1016/j.msea.2010.12.033

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

ZnO-coated aluminum borate whiskers reinforced 2024Al composite was fabricated by squeeze casting. Interfacial microstructures and tensile properties of the composite in as-cast and after thermal exposure were investigated. Fracture mechanisms of the composite in as-cast and after thermal exposure were also investigated. The results show that ZnO coating of the whiskers reacts with molten 2024Al and MgAl2O4 forms at the interface during squeeze casting. On the one hand, the interfacial reaction between ZnO and 2024Al can improve the wettability of the whiskers by molten 2024Al increasing the tensile properties of as-cast composite. On the other hand, during thermal exposure, MgAl2O4 at the interface can effectively hinder serious interfacial reactions between the whiskers and magnesium in the matrix of 2024Al, improving the thermal stability of the composite at high temperatures. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2407 / 2411

页数：5

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