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

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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.

Keywords: MAGNESIUM ALLOYS; SURFACE ALLOYING; SURFACE NANOCRYSTALLIZATION

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2008.373

Publication date: May 1, 2008

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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