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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13003
Title: Serrated yielding during nanoindentation of thermomechanically processed novel Mg-9Li-7Al-1Sn and Mg-9Li-5Al-3Sn-1Zn alloys
Authors: Kumar V.
Gupta A.
Lahiri, Debrupa
Balani K.
Published in: Journal of Physics D: Applied Physics
Abstract: In this study, nanoindentation measurements within the hcp α-phase and the bcc β-phase were carried out on two thermomechanically (TM) processed Mg-9Li-7Al-1Sn and Mg-9Li-5Al-3Sn-1Zn alloys to reveal the individual mechanical strength of the phases. Commercially pure Mg and AZ31 Mg alloys were also analysed to study the contribution of alloying addition on the mechanical strength on nano-length scale, such as hardness and elastic modulus of the constituent phases, in Mg-Li alloys. The average hardness and reduced elastic modulus values of TM processed Mg-9Li-7Al-1Sn and Mg-9Li-5Al-3Sn-1Zn measured by nanoindentation were observed to be higher (80% and 30%, respectively) than that of pure Mg. The elastic modulus values of both alloys are about 58 GPa, which is much larger than that of other Mg-based alloys (∼45 GPa). Pop-in events (serrated yielding due to the Portevin-Le Chatelier effect) were also observed in TM processed Mg-9Li-7Al-1Sn and Mg-9Li-5Al-3Sn-1Zn alloys and were quantified using models developed by Taylor and Morris. © 2013 IOP Publishing Ltd.
Citation: Journal of Physics D: Applied Physics (2013), 46(14): -
URI: https://doi.org/10.1088/0022-3727/46/14/145304
http://repository.iitr.ac.in/handle/123456789/13003
Issue Date: 2013
ISSN: 223727
Author Scopus IDs: 57202531809
57207924606
26326345700
8218235100
Author Affiliations: Kumar, V., Department of Materials Science and Engineering, Indian Institute of Technology, Kanpur-208016, India, Faculty at Malaviya, National Institute of Technology, Jaipur, India
Gupta, A., Department of Materials Science and Engineering, Indian Institute of Technology, Kanpur-208016, India
Lahiri, D., Department of Mechanical and Materials Engineering, Florida International University, Miami, FL 33174, United States
Balani, K., Department of Materials Science and Engineering, Indian Institute of Technology, Kanpur-208016, India
Corresponding Author: Balani, K.; Department of Materials Science and Engineering, Indian Institute of Technology, Kanpur-208016, India; email: kbalani@iitk.ac.in
Appears in Collections:Journal Publications [MT]

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