Corrosion Resistance of AZ91 Mg Alloy Modified by High-Current Pulsed Electron Beam

被引：14

作者：

Wu, Peng-Peng ^{[1
]}

Deng, Kun-Kun ^{[1
]}

Nie, Kai-Bo ^{[1
]}

Zhang, Zhong-Zhong ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Shanxi Key Lab Adv Magnesium Based Mat, Taiyuan 030024, Shanxi, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2019年 / 32卷 / 02期

基金：

中国国家自然科学基金;

关键词：

High-current pulsed electron beam (HCPEB); Corrosion resistance; Electrochemical impedance spectroscopy (EIS); AZ91 Mg alloy; Microstructure; MAGNESIUM ALLOY; SURFACE MICROSTRUCTURE; COATINGS; BEHAVIOR; STRENGTH; HCPEB; PHASE; CU;

D O I：

10.1007/s40195-018-0798-1

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The high-current pulsed electron beam (HCPEB) treatment with current density 6 J/cm(2) 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.

引用

收藏

页码：218 / 226

页数：9

相关论文

共 28 条

[1] The characterization of plasma electrolytic oxidation coatings on AZ41 magnesium alloy [J].

Apelfeld, A. ;

Krit, B. ;

Ludin, V. ;

Morozova, N. ;

Vladimirov, B. ;

Wu, R. Z. .

SURFACE & COATINGS TECHNOLOGY, 2017, 322 :127-133

[2] Effect of high current pulsed electron beam treatment on surface microstructure and wear and corrosion resistance of an AZ91HP magnesium alloy [J].

Gao, Bo ;

Hao, Shengzhi ;

Zou, Jianxin ;

Wu, Wenyuan ;

Tu, Ganfeng ;

Dong, Chuang .

SURFACE & COATINGS TECHNOLOGY, 2007, 201 (14) :6297-6303

[3] Surface modification of TC4 titanium alloy by high current pulsed electron beam (HCPEB) with different pulsed energy densities [J].

Gao, Yu-kui .

JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 572 :180-185

[4] Corrosion Protective Conversion Coatings on Magnesium Disks Using a Hydrothermal Technique [J].

Gupta, R. K. ;

Mensah-Darkwa, K. ;

Kumar, D. .

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2014, 30 (01) :47-53

[5] Producing nano-grained and Al-enriched surface microstructure on AZ91 magnesium alloy by high current pulsed electron beam treatment [J].

Hao, Shengzhi ;

Li, Mincai .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2016, 375 :1-4

[6] Effect of Zn content on the chemical conversion treatments of AZ91D magnesium alloy [J].

Hu, Lifang ;

Meng, Qingsen ;

Chen, Shaoping ;

Wang, Hao .

APPLIED SURFACE SCIENCE, 2012, 259 :816-823

[7] Study on hydrophobicity and wettability transition of Ni-Cu-SiC coating on Mg-Li alloy [J].

Ji, Peng ;

Long, Ruiying ;

Hou, Legan ;

Wu, Ruizhi ;

Zhang, Jinghuai ;

Zhang, Milin .

SURFACE & COATINGS TECHNOLOGY, 2018, 350 :428-435

[8] Effect of heat treatment on corrosion behavior of AZ63 magnesium alloy in 3.5 wt.% sodium chloride solution [J].

Li, Jiarun ;

Jiang, Quantong ;

Sun, Huyuan ;

Li, Yantao .

CORROSION SCIENCE, 2016, 111 :288-301

[9] Surface composite nanostructures of AZ91 magnesium alloy induced by high current pulsed electron beam treatmentL [J].

Li, M. C. ;

Hao, S. Z. ;

Wen, H. ;

Huang, R. F. .

APPLIED SURFACE SCIENCE, 2014, 303 :350-353

[10] Improved corrosion resistance of a high-strength Mg-Al-Mn-Ca magnesium alloy made by rapid solidification powder metallurgy [J].

Liao, Jinsun ;

Hotta, Makoto ;

Mori, Yoichi .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 544 :10-20