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Microstructure and Tensile Properties of AZ31B Alloy and AZ31B-SiCp Deformed Through a Multi-step Process

  • M. J. Shen*
  • , X. J. Wang
  • , T. Ying
  • , M. F. Zhang
  • , K. Wu
  • *Corresponding author for this work
  • Shenyang Agricultural University
  • Harbin Institute of Technology
  • Shanghai Jiao Tong University
  • Liaoning Provincial Gem Quality Supervision and Inspection Center

Research output: Contribution to journalArticlepeer-review

Abstract

The 15 vol.% micron SiC particle (SiCp)-reinforced AZ31B magnesium matrix composite (AZ31B-SiCp) prepared with semisolid stirring-assisted ultrasonic vibration was subjected to a multi-step process. The influence of the multi-step processing route on the microstructure and mechanical properties of the AZ31B-SiCp was investigated. For comparison, the monolithic AZ31B alloy was also processed under the same conditions. The results showed that the grain sizes of the AZ31B alloy and the AZ31B-SiCp were gradually decreased with increasing the processing step. Compared with the AZ31B-SiCp, the grain size of the AZ31B alloy was much larger, and the grain size distribution was inhomogeneous at the same processing condition. The particles of the AZ31B-SiCp were dispersed uniformly through the multi-step processing. Moreover, the tensile properties of the materials were gradually improved with increasing the processing step. In particular, the strength of AZ31B-SiCp and the ductility of AZ31B alloy improved significantly based on the room-temperature tensile test results.

Original languageEnglish
Pages (from-to)4608-4616
Number of pages9
JournalJournal of Materials Engineering and Performance
Volume25
Issue number10
DOIs
StatePublished - 1 Oct 2016
Externally publishedYes

Keywords

  • magnesium matrix composite
  • microstructure
  • multi-step process
  • room-temperature tensile properties

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