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Journal of Nanomaterials
Volume 2013 (2013), Article ID 503256, 8 pages
http://dx.doi.org/10.1155/2013/503256
Research Article

Formation of Surface Nano- and Textured Austenite Induced by Pulsed Electron Beam Irradiation under Melting Mode

1School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
2Shanghai Engineering Research Center of Mg Materials and Applications & National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China
3State Key Laboratory of Metal Matrix Composite & School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received 18 December 2012; Accepted 25 January 2013

Academic Editor: Gang Ji

Copyright © 2013 K. M. Zhang and J. X. Zou. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We report in this paper an interesting phenomenon associated with low-energy high-current pulsed electron beam (LEHCPEB) treatment: surface nanograined and textured austenite formation under the melting treatment mode. The treatment induces superfast heating and melting followed by a rapid solidification and cooling of the material surfaces. As a result, nano-structured surface layers can be achieved quite easily. Examples of nanoaustenite formation with special texture state in the modified surface layer of AISI D2 steel and NiTi alloy will show the potential for surface nanocrystallization of materials with improved properties by LEHCPEB technique.