Effect of hybrid reinforcement on crack initiation and propagation mechanism in metal matrix composites during low cycle fatigue

A. K.M. Asif Iqbal, Yoshio Arai, Wakako Araki

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

Abstract

Microcrack initiation and propagation mechanism during low cycle fatigue were studied in three types of materials; Hybrid MMC, MMC with Al2O3 whiskers and Al alloy and the role of hybrid reinforcement was examined. The microcracks initiated at the boundary between Si particles cluster and Al grain in case of Al alloy but the initiation location changed to the interface of whisker-matrix and particle-matrix when reinforcements were added to the matrix. Moreover, microcracks initiated very early in the fatigue life of hybrid MMC compare to other two materials. Besides, interface debonding followed by void nucleation dominates the fracture of MMCs whereas fracture occurs in Al alloy due to the formation of voids and plastic slip.

Original languageEnglish
Title of host publicationECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
PublisherEuropean Conference on Composite Materials, ECCM
ISBN (Print)9788888785332
Publication statusPublished - 2012
Externally publishedYes
Event15th European Conference on Composite Materials: Composites at Venice, ECCM 2012 - Venice, Italy
Duration: 24 Jun 201228 Jun 2012

Publication series

NameECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials

Conference

Conference15th European Conference on Composite Materials: Composites at Venice, ECCM 2012
Country/TerritoryItaly
CityVenice
Period24/06/1228/06/12

Keywords

  • Low cycle fatigue
  • Metal matrix composites (MMCs)
  • Microcrack initiation
  • Microrack propagation

ASJC Scopus subject areas

  • Ceramics and Composites

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