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A review on hot extrusion of Metal Matrix （回顾热挤压金属矩阵）
RESEARCH INVENTY: International Journal of Engineering and Science
ISBN : 2319-6483, ISSN : 2278-4721, Vol. 1, Issue 10
(December 2012), PP 30-35
A review on hot extrusion of Metal Matrix Composites (MMC’s)
1 2 2 2
C.S Ramesh .Adarsha Hirianiah , Harishanad K.S , Naveen Prakash Noronha
1. Center of Surface Engineering Laboratory, PESIT, Bangalore
2.Department of Mechanical Engineering, R V College of Engin eering, Bangalore
Abstract : In this paper we examine the effects of hot extrusion used as a secondary process in fabrication of
Metal Matrix Composites (MMC ’s). A comprehensive study was made on the properties of MMCs after Hot
extrusion process. It was found that most properties are superior as compared to cold extrusion. Properties
including hardness, impact strength, tensile properties, residual stresses etc. were found to be better for most of
the MMC ’s. The results are discussed with respective plots and reported.
Key Words: Metal Matrix Composites, Hot Extrusion.
I. Introduction
A metal matrix composite (MMC) is a composite material with at least two constituent parts, one being
a metal. The other material may be a different metal or another material, such as a ceramic or organic
compound. The composite generally has superior characteristics than those of each of the individual
components. MMCs are made by dispersing a reinforcing material into a metal matrix (usually ductile).The
reinforcement surface can be coated to prevent a chemical reaction with the matrix. The matrix is the monolithic
(single crystal or Monocrystalline) materi
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