Evaluation of Fracture Toughness of Metal Matrix Composites

T. Parameshwaranpillai¹ and P. R. Lekshminarayanan²

¹Anna University, Tiruchirappalli - 620 024 (India). 

²Annamalai University, Chidamparam - 608 002 (India).

DOI : http://dx.doi.org/10.13005/msri/050211

ABSTRACT:

An experimental study was conducted to evaluate fracture toughness of metal matrix composite (MMC) analysis by heat treatment processes. The material was a 7.5 mm thick extrusion of 2124 aluminum alloy with 10 % SiC particulates. Fractographic examinations shows that failure occurred by the micro-mechanism involved with plastic deformation although the specimens broken by brittle fracture. Fracture toughness values depend upon the homogeneous distribution of the SiC particulates and its grain size. The observed K1c value is optimized by Taguchi technique by using 7.5 Design Taguchi software.

KEYWORDS: Metal matrix composites; Heat treatment; fatigue pre cracking; cyclic loading; brittle fracture

Copy the following to cite this article: Parameshwaranpillai T, Lekshminarayanan P. R. Evaluation of Fracture Toughness of Metal Matrix Composites. Mat.Sci.Res.India;5(2)

Copy the following to cite this URL: Parameshwaranpillai T, Lekshminarayanan P. R. Evaluation of Fracture Toughness of Metal Matrix Composites. Mat.Sci.Res.India;5(2). Available from: http://www.materialsciencejournal.org/?p=2034

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