Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.msea.2012.08.002
Title: High temperature tensile response of nano-Al 2O 3 reinforced AZ31 nanocomposites
Authors: Hassan, S.F.
Paramsothy, M. 
Patel, F.
Gupta, M. 
Keywords: AZ31
Ductility
High-temperature strength
Nano-Al 2O 3
Nanocomposite
Issue Date: 15-Dec-2012
Citation: Hassan, S.F., Paramsothy, M., Patel, F., Gupta, M. (2012-12-15). High temperature tensile response of nano-Al 2O 3 reinforced AZ31 nanocomposites. Materials Science and Engineering A 558 : 278-284. ScholarBank@NUS Repository. https://doi.org/10.1016/j.msea.2012.08.002
Abstract: Nano-Al 2O 3 reinforcement's capability to simultaneously enhance the room temperature (25°C) strength and ductility of magnesium alloys has effectively been exploited in ingot metallurgy processed AZ31/1.5Al 2O 3 nanocomposite in this study. Tensile characterization revealed that at high temperature (150-250°C), instead of strengthening, the thermally stable nano-Al 2O 3 reinforcement ironically exacerbated the softening of AZ31 alloy. However, an incredible increment in AZ31 alloy (with grain size of ~2.3μm) ductility (up to 184%) has been achieved in the nanocomposite with increasing temperature due to the incorporation of nano-Al 2O 3 as reinforcement. Microstructural characterization of the nanocomposite revealed that the dynamic recrystallization process has induced a complete recrystallization in AZ31 alloy matrix at a relatively much lower temperature (150°C) with tremendous grain growth near the fracture surface at higher temperature (250°C). Fractography of the nanocomposite revealed that the room temperature mixed ductile mode fracture behavior of AZ31 alloy transformed to a complete ductile mode at high temperature due to the presence of nano-Al 2O 3 particulates. © 2012 Elsevier B.V.
Source Title: Materials Science and Engineering A
URI: http://scholarbank.nus.edu.sg/handle/10635/85268
ISSN: 09215093
DOI: 10.1016/j.msea.2012.08.002
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

13
checked on Sep 12, 2018

WEB OF SCIENCETM
Citations

10
checked on Sep 12, 2018

Page view(s)

23
checked on Sep 14, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.