Dislocation configuration evolution of FCC alloys induced by Laser Shock Processing Online publication date: Tue, 30-Apr-2013
by Xinmin Luo; Yongkang Zhang; Kangmin Chen; Xuedong Ren
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 8, No. 1/2, 2013
Abstract: To investigate the relations between dislocation motion and microstructure evolution of FCC metals during Laser Shock Processing (LSP), and then improve the understanding of the mechanism of laser shock strengthening, aluminium alloy 2A02 and austenitic stainless steel 201 were selected as the representatives, and laser shocked by the Nd:YAG laser with 1064 nm output wavelength and 20 ns short pulse. The microstructure evolution of test materials induced by laser shock was analysed via Transmission Electronic Microscope (TEM) and Inverse Fast Fourier Transformation (IFFT), and the dislocation configurations and their function were discussed. The experimental results indicated that the increase in both the surface hardness and the residual compressive stress of the laser-shocked test materials can be attributed to the contribution of complex dislocation configurations and nano-crystallisation.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Microstructure and Materials Properties (IJMMP):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook