A review on the effects of micro-nano particle size and volume fraction on microstructure and mechanical properties of metal matrix composites manufactured via mechanical alloying

Year 2018, Volume: 2 Issue: 1, 68 - 74, 15.04.2018

Sinem Aktaş , Ege Anıl Diler

Abstract

The major challenge
for the production of the composites which are reinforced with nano and
micro-sized particles is to obtain uniform distribution of reinforcement
particles in microstructure. Powder metallurgy method can be used in order to
obtain a homogeneous distribution of reinforcement particles. This method has
three steps: 1) mixing and/or alloying of powders, 2) pressing, and 3) sintering.
Mechanical alloying is a complex process which involves optimization of many
parameters such as milling time, process control agent, particle size, ball to
powder weight ratio, milling speed, milling atmosphere, mill types, etc. The
main aim of the present study is to explain the roles of volume fraction and size
of reinforcement particle on the microstructural properties and how these
parameters affect the mechanical properties of aluminum based metal matrix
composites with micro and nano-sized reinforcement particles produced by
mechanical alloying.

Keywords

Mechanical alloying, Mechanical properties, Metal matrix composites, Microstructure, Reinforcement particle size, Volume fraction

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