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Title: Al 2O 3 nanoparticle addition to concentrated magnesium alloy AZ81: Enhanced ductility
Authors: Paramsothy, M. 
Tan, X.H.
Chan, J.
Kwok, R.
Gupta, M. 
Keywords: Al 2O 3 nanoparticle
AZ81 nanocomposite
Mechanical properties
Issue Date: 25-Dec-2012
Citation: Paramsothy, M., Tan, X.H., Chan, J., Kwok, R., Gupta, M. (2012-12-25). Al 2O 3 nanoparticle addition to concentrated magnesium alloy AZ81: Enhanced ductility. Journal of Alloys and Compounds 545 : 12-18. ScholarBank@NUS Repository.
Abstract: This study is aimed at understanding the ductility enhancing function of nanoparticles in a concentrated magnesium alloy (AZ81) nanocomposite. Al 2O 3 nanoparticles were selected for reinforcement purposes due to the well known affinity between magnesium and oxygen. AZ81 magnesium alloy was reinforced with Al 2O 3 nanoparticles using solidification processing followed by hot extrusion. The nanocomposite exhibited similar grain size and hardness to the monolithic alloy, reasonable nanoparticle distribution and non-dominant (0 0 0 2) texture in the longitudinal direction. Compared to the monolithic alloy in both tension and compression, the nanocomposite exhibited higher failure strain (+66% and +18%, respectively) without significant compromise in strength, and higher energy absorbed until fracture (EA) (+71% and +12%, respectively). The beneficial effects of Al 2O 3 nanoparticle addition on the tensile and compressive ductility enhancement of AZ81 alloy is discussed in this paper. © 2012 Elsevier B.V. All rights reserved.
Source Title: Journal of Alloys and Compounds
ISSN: 09258388
DOI: 10.1016/j.jallcom.2012.08.020
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