Microstructure and mechanical properties of ALN particles reinforced magnesium matrix composites with in situ synthesis process - Details

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Abstract：

In　this　paper,　in-situ　AlN　particles　reinforced　magnesium　matrix　composites　were　fabricated.　The　results　show　that　the　AlN　phases　can　be　in-situ　synthesized　in　AZ91D　alloy　with　the　addition　of　Mg3N2.　The　microstructure　and　phases　of　the　matrix　alloys　and　the　composites　were　investigated　by　OM,　SEM　and　XRD.　The　hardness　and　mechanical　properties　of　the　matrix　alloys　and　the　composites　were　also　obtained.　Compared　with　those　of　the　matrix　alloy,　the　grains　of　composites　were　refined　and　the　mechanical　properties　of　composites　were　improved　significantly.　The　microstructural　analysis　indicates　that　the　AlN　particles　can　act　as　the　heterogeneous　nucleation　points　of　α-Mg　phases　in　the　composites.　The　strengthening　mechanism　of　the　composites　with　AlN　particles　was　discussed.　©　2016　Trans　Tech　Publications,　Switzerland.

Keyword：

Magnesium Nucleation Microstructure Reinforcement Mechanical properties Particle reinforced composites III-V semiconductors Magnesium compounds Aluminum nitride Aluminum alloys

Author Community：

[ 1 ] [Wang, Zhao Hui]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
[ 2 ] [Li, Bo]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
[ 3 ] [Du, Xian]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
[ 4 ] [Liu, Ke]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
[ 5 ] [Li, Shu Bo]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
[ 6 ] [Du, Wen Bo]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China