Laser alloying of magnesium alloy AZ91D with Al-Si powder and its corrosion performance - Details

Author：

Li, Da (Li, Da.) | Qian, Ming (Qian, Ming.) | Jin, Chang (Jin, Chang.) | Li, Hui (Li, Hui.)

Indexed by：

EI Scopus PKU CSCD

Abstract：

Laser　alloying　of　magnesium　alloy　AZ91D　with　direct　Al-Si　power　feeding　for　improvement　of　corrosion　resistance　was　investigated.　The　relationship　between　laser　alloying　parameters　and　dimensions　of　alloyed　layers　was　studied.　The　microstructural　features　of　the　alloyed　layer　were　characterized　by　using　scanning　electronic　microscope　(SEM),　energy　disperse　spectroscopy　(EDS)　and　X-ray　diffraction　(XRD).　Anodic　polarization　test　was　applied　to　evaluate　the　corrosion　performance　of　AZ91D　alloyed　layer,　which　yielded　enhanced　corrosion　resistance.　The　contribution　of　the　intermetallic　compounds　(IMCs)　of　Mg2Si,　Al12Mg17,　Al3Mg2　in　alloyed　layers　to　corrosion　resistance　was　studied.

Keyword：

Corrosion resistant alloys Silicon alloys Intermetallics Aluminum corrosion Alloying Magnesium powder Silicon Magnesium alloys Magnesium metallography Binary alloys Corrosion resistance Corrosion Aluminum alloys

Author Community：

[ 1 ] [Li, Da]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Qian, Ming]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Jin, Chang]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Li, Hui]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China