Addition of B4C to AZ91 via diecasting and its effect on wear behaviour

A. A. Kaya, E. S. Kayak, D. Eliezer, G. Gertsberg, N. Moscovitch

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

The dry sliding wear behavior of magnesium-matrix-composites (MMC) reinforced by boron carbide particulates (B4CP) has been investigated. Magnesium is the lightest structural material and is a good choice as a metal matrix for boron carbide and silicon carbide addition. Magnesium and its alloys, without reinforcement, are generally not suitable for mechanical applications due to their low wear resistance. The MMCs used in this study were produced via highpressure die-casting technique. The wear resistance of B 4C/AZ91D composite reinforced with 12 and 25 wt% B4C were studied, compared with unreinforced diecast AZ91D. As-cast microstructures of the materials and boron carbide particules were characterized by using Scanning Electron Microscopy (SEM). The hardness values of the control sample and the composites were determined via Vickers hardness measurements. Pin on disk dry sliding wear tests were carried out to study wear rate and wear mechanisms. The magnesium matrix composites were used as pins while mild steel as disc material. The worn surfaces of pins were examined by using SEM. The wear performance of magnesium matrix composites was improved with increasing volume fraction of B4C up to a certain level.

Original languageEnglish
Title of host publicationMagnesium - Science, Technology and Applications, Mg - Proceedings of the International Conference on Magnesium - Science, Technology and Applications
PublisherTrans Tech Publications Ltd
Pages741-744
Number of pages4
ISBN (Print)0878499687, 9780878499687
DOIs
StatePublished - 1 Jan 2005
EventInternational Conference on Magnesium - Science, Technology and Applications - Beijing, China
Duration: 20 Sep 200424 Sep 2004

Publication series

NameMaterials Science Forum
Volume488-489
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceInternational Conference on Magnesium - Science, Technology and Applications
Country/TerritoryChina
CityBeijing
Period20/09/0424/09/04

Keywords

  • B4C
  • Composite
  • MMC

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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