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The Influence of Interfacial Modification on Tensile Strength of Gr/Al Composites

Published online by Cambridge University Press:  21 February 2011

Cheng He ,
Guoding Zhang  and
Renjie Wu
Cheng He
Affiliation:
Institute of Composite Materials, Shanghai Jiao Tong University Shanghai 20030, People's Republic of China
Guoding Zhang
Affiliation:
Institute of Composite Materials, Shanghai Jiao Tong University Shanghai 20030, People's Republic of China
Renjie Wu
Affiliation:
Institute of Composite Materials, Shanghai Jiao Tong University Shanghai 20030, People's Republic of China
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Abstract

Varying the composition of the matrix alloy was a useful technique for tailoring the interfacial structure of MMC. In this paper, the influence of different interfacial states on the tensile strength of Gr/Al composites were investigated. Three aluminum alloys, pure Al, Al-Ti alloy (Ti oversaturated) and LY12 (an Al-Cu-Mg alloy) were chosen as the matrix materials. The results showed that the composites with Al-Ti matrix had excellent tensile properties, even after heat-treatment at 600°C, while with LY12 matrix exhibited poor properties compared with pure Al matrix. Microanalysis revealed that the interfacial structures of the composites with the above matrices were different. In addition, an initial study of mechanism of these matrix effects on the properties of the composites was also carried out.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 170: Symposium N – Interfaces in Composites , 1989 , 257
Copyright
Copyright © Materials Research Society 1990

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