Corrosion Resistance of AZ91 Mg Alloy Modified by High-Current Pulsed Electron Beam
来源期刊：Acta Metallurgica Sinica2019年第2期
论文作者：Peng-Peng Wu Kun-Kun Deng Kai-Bo Nie Zhong-Zhong Zhang
文章页码：218 - 226
摘 要：The high-current pulsed electron beam（HCPEB） treatment with current density 6 J/cm2 was applied on AZ91 Mg alloy to improve its corrosion resistance. Results showed that the net-like Mg17Al12 disappeared on the surface of AZ91 Mg alloy after irradiation by HCPEB, which was instead of supersaturated Al element on the surface. Nevertheless, the application of HCPEB also led to the formation of crater-like and groove-like structures as well as micro-cracks on the surface of AZ91 Mg alloy. After HCPEB treatment by 3, 5 and 10 pulses, the AZ91 Mg alloy exhibited better corrosion resistance.However, the increasing amount of micro-cracks reduced the anti-corrosive properties of AZ91 Mg alloy as the pulse increased to 20 and 30.
Peng-Peng Wu，Kun-Kun Deng，Kai-Bo Nie，Zhong-Zhong Zhang
Shanxi Key Laboratory of Advanced Magnesium-Based Materials, College of Materials Science and Engineering,Taiyuan University of Technology
摘 要：The high-current pulsed electron beam（HCPEB） treatment with current density 6 J/cm2 was applied on AZ91 Mg alloy to improve its corrosion resistance. Results showed that the net-like Mg17Al12 disappeared on the surface of AZ91 Mg alloy after irradiation by HCPEB, which was instead of supersaturated Al element on the surface. Nevertheless, the application of HCPEB also led to the formation of crater-like and groove-like structures as well as micro-cracks on the surface of AZ91 Mg alloy. After HCPEB treatment by 3, 5 and 10 pulses, the AZ91 Mg alloy exhibited better corrosion resistance.However, the increasing amount of micro-cracks reduced the anti-corrosive properties of AZ91 Mg alloy as the pulse increased to 20 and 30.
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