Comparison between B4C-ZrB2-Al Composite and B4C-Al Composite on Microstructure and Mechanical Properties

被引：3

作者：

Lu Peng ^{[1
]}

机构：

[1] Chinese Peoples Armed Police Forces Acad, Dept Sci Res, Langfang 065000, Hebei, Peoples R China

来源：

MECHANICS, SOLID STATE AND ENGINEERING MATERIALS | 2011年 / 279卷

关键词：

B4C-Al; B4C-ZrB2-Al; vacuum infiltration; microstructure; mechanical properties; BORON-CARBIDE;

D O I：

10.4028/www.scientific.net/AMR.279.71

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

B4C-Al and B4C-ZrB2-Al composites were fabricated by infiltrating aluminum into porous B4C and B4C-ZrB2 preforms in vacuum. The effect of ZrB2 addition on the microstucture and mechanical properties of the B4C-Al composites were investigated. The flexural strength and the fracture toughness of composite improved greatly as the result of ZrB2 addition. The ZrB2 addition inhibited the reaction between B4C and Al. The infiltrated aluminum addition was the leading reason for the fracture toughness improvement of the composites. Inter/transgranular fracture mode with many tear ridges and dimples was showing in the fracture surface of the B4C-ZrB2-Al composite. The relationships between the microstructures and the mechanical properties of the B4C-ZrB2-Al composites were discussed.

引用

页码：71 / 76

页数：6

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