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| Effect of Nd Addition on Microstructure and Corrosion Resistance of AZ91 Magnesium Alloy |
| WANG Na, BAI Pucun, HOU Xiaohu, HAO Yongfei |
| College of Materials Science and Engineering, Inner Mongolian University of Technology, Hohhot 010051 |
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Cite this article:
WANG Na BAI Pucun HOU Xiaohu HAO Yongfei. Effect of Nd Addition on Microstructure and Corrosion Resistance of AZ91 Magnesium Alloy. Chin J Mater Res, 2011, 25(2): 214-218.
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Abstract The microstructure and corrosion behavior of AZ91 magnesium alloys with Nd addition were characterized by optical microscopy , scanning electronic microscopy , and the static mass loss method, the effect of Nd addition on microstructure and corrosion resistance of AZ91 magnesium alloy was investigated. The results show that the trace addition of Nd refines the microstructure of AZ91. The semi-continuous reticular β(Mg17Al12) is gradually becoming the thin strip, and the distribution is more uniform. There are granular Al3Nd phase formed. And rare earth Nd significantly impwroved the resistance corrosion of AZ91 magnesium alloy. The alloy with 1.4% Nd has the best corrosion resistance, and the corrosion rate is 0.1708 mg·cm−2·d−1, only 20% of that of common AZ91 alloy.
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Received: 07 September 2010
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| Fund: Supported by Natural Science Foundation of Inner Mongolia of China No.2009MS0807 and Inner Mongolia Key Technologies Program No.20091502. |
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