Surface Alloying of Mg Alloys After Surface Nanocrystallization
Authors: Zhang, Ming-Xing; Shi, Yi-Nong; Sun, Haiqing; Kelly, Patrick M.
Source: Journal of Nanoscience and Nanotechnology, Volume 8, Number 5, May 2008 , pp. 2724-2728(5)
Publisher: American Scientific Publishers
Abstract:Surface nanocrystallization using a surface mechanical attrition treatment effectively activates the surface of magnesium alloys due to the increase in grain boundary diffusion channels. As a result, the temperature of subsequent surface alloying treatment of pure Mg and AZ91 alloy can be reduced from 430 °C to 380 °C. Thus, it is possible to combine the surface alloying process with the solution treatment for this type of alloy. After surface alloying, the hardness of the alloyed layer is 3 to 4 times higher than that of the substrate and this may significantly improve the wear resistance of magnesium alloys.
Document Type: Research Article
Publication date: May 1, 2008
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