Affordable Access

Publisher Website

Nanoparticle effects in cast Mg-1 wt% SiC nano-composites

Authors
Journal
Materials Science and Engineering A
0921-5093
Publisher
Elsevier
Publication Date
Volume
558
Identifiers
DOI: 10.1016/j.msea.2012.07.048
Keywords
  • Composites
  • Casting
  • Grain Refinement
  • Light Microscopy
  • Electron Microscopy
  • Mechanical Characterization

Abstract

Abstract Mg matrix nano-composites (MMNCs), reinforced with 1wt% SiC nanoparticles, were cast by ultrasonic cavitation-based dispersion methods. Microstructural analyses of as cast specimens were conducted to characterize the grain size, shape and distribution, SiC nanoparticle size and nanoparticle-matrix interface. Average grain size for the composite specimens was 72μm compared to 181μm for pure Mg samples. The average SiC nanoparticle size was 66nm. TEM studies showed good local dispersion of SiC nanoparticles, with only a few small largely spaced agglomerates. HRTEM showed a clean interface between SiC nanoparticles and the Mg matrix. The yield strength of Mg-1wt% SiC nanocomposites was 67MPa which showed improvement from 47MPa for the pure Mg samples. This extra strengthening is due to Orowan and Hall–Petch effects.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Al-Si/SiC nanoparticles composites synthesized by...

on Recent patents on nanotechnolo... November 2011

S′ and δ′ phase precipitation in SiCpreinforced Al...

on Materials Science and Engineer... Jan 01, 1996

Fabrication of Al-based hybrid composites reinforc...

on Journal of Materials Processin... Jan 01, 2006
More articles like this..