Improvement of Wear Resistance of Magnesium Alloy AZ91HP by High Current Pulsed Electron Beam Treatment

材料热处理学报, 2004, 25(5): 1029-1031.

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1.State Key Lab. of Materials surface Modification by Laser, Ion and Electron Beams, Dalian, China

2.State Key Lab. of Materials surface Modification by Laser, Ion and Electron Beams, Dalian, China

3.State Key Lab. of Materials surface Modification by Laser, Ion and Electron Beams, Dalian, China

4.State Key Lab. of Materials surface Modification by Laser, Ion and Electron Beams, Dalian, China

5.State Key Lab. of Materials surface Modification by Laser, Ion and Electron Beams, Dalian, China;Department of Materials Engineering, Dalian University of Technology, Dalian, China

6.State Key Lab. of Materials surface Modification by Laser, Ion and Electron Beams, Dalian, China

Improvement of Wear Resistance of Magnesium Alloy AZ91HP by High Current Pulsed Electron Beam Treatment

Keywords： Mg alloy

Surface modification of magnesium alloy AZ91HP (9wt%Al, 0.5wt%Zn, 0.5wt%Mn, Mg remaining percentage) by high current pulsed electron beam (HCPEB) treatment was studied in this paper. The secondary phase Mg17Al12 is nearly completely dissolved and as a result, a super-saturated solid solution forms on the re-melted surface.The microhardness is increased both in and far beyond the heat-affected zone (HAZ), reaching about 250μm.Measurements on sliding wear have shown that the wear resistance of the treated samples was improved by a factor of about 2.4 as compared to the as-received sample. It is also found that the sliding wear resistance can be further improved by surface alloying with TiN.

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材料期刊网

Improvement of Wear Resistance of Magnesium Alloy AZ91HP by High Current Pulsed Electron Beam Treatment

参考文献