Microstructure and mechanical properties of AlN particles in situ reinforced Mg matrix composites

Changlin Yang, Bin Zhang, Dongchen Zhao, Hebin Lü, Tongguang Zhai, Feng Liu

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

AlN particles reinforced Mg-9 wt% Al matrix composites were in situ synthesized by bubbling nitrogen gas method. Nano-sized AlN particles were uniformly distributed in the matrix, which resulted in grain refinement of a-Mg from 90 to 100 µm to 30–40 µm after solutionizing, and then Mg17Al12 phase was dispersed and decreased. Subsequently, significant improvements of tensile strength (~226 MPa) and elongation (~21%) were obtained in the as-cast AlN/ Mg-9Al composites. The interface characteristic and tensile fracture surface were also analyzed.

Original languageEnglish
Pages (from-to)158-163
Number of pages6
JournalMaterials Science and Engineering: A
Volume674
DOIs
StatePublished - 30 Sep 2016

Keywords

  • AlN
  • Composites
  • In situ
  • Magnesium
  • Tensile properties

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