Microstructure investigation of a SiC whisker reinforced eutectoid zinc alloy matrix composite

Z. Mei, Y. H. Zhu, Wing Bun Lee, Tai Man Yue, G. K H Pang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)

Abstract

The microstructure of a SiC whisker reinforced eutectoid zinc alloy metal matrix composite has been studied by transmission electron microscopy. Precipitation of η particles inside α phase in the matrix was detected, with the orientation relationship, [0 0 0 1]η∥ [over(1, ̄) 1 1]α, (2 over(1, ̄) over(1, ̄) 0)η∥ (0 2 over(2, ̄))αfor newly manufactured composite; [2 over(1, ̄) over(1, ̄) 0]η∥ [0 1 1]α, (0 0 0 1)η∥ (1 over(1, ̄) 1)αfor prolonged aged composite. T′ phase was detected in prolonged aged composite. SiC reinforcements were well bonded with the matrix. The interface between the SiC whisker and the matrix was clean and no damage of the material was observed at the interfaces between the matrix and reinforcements. Crystal defects like stacking faults, dislocations and twin were observed in the SiC whiskers. A new phase, Cu5Zn8, was observed near the SiC whiskers.
Original languageEnglish
Pages (from-to)1345-1350
Number of pages6
JournalComposites Part A: Applied Science and Manufacturing
Volume37
Issue number9
DOIs
Publication statusPublished - 1 Sep 2006

Keywords

  • A. Metal matrix composites (MMCs)
  • B. Microstructure
  • D. Electron microscopy

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this