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Title: Enhancing strength and hardness of AZ31B through simultaneous addition of nickel and nano-Al2O3 particulates
Authors: Nguyen, Q.B. 
Tun, K.S. 
Chan, J.
Kwok, R.
Kuma, J.V.M. 
Gupta, M. 
Keywords: AZ31B
Mechanical properties
Issue Date: 25-Jan-2011
Citation: Nguyen, Q.B., Tun, K.S., Chan, J., Kwok, R., Kuma, J.V.M., Gupta, M. (2011-01-25). Enhancing strength and hardness of AZ31B through simultaneous addition of nickel and nano-Al2O3 particulates. Materials Science and Engineering A 528 (3) : 888-894. ScholarBank@NUS Repository.
Abstract: In the present study, AZ31B-Al2O3-Ni composites are developed by the addition of different amounts of Ni particulates into AZ31B-1.5Al2O3 using disintegrated melt deposition technique followed by hot extrusion. The AZ31B-1.5Al2O3 nano-composite is known to exhibit excellent ductility (∼30%) matching with that of pure aluminum but its strength levels are compromised. The composites developed in the current study show a homogeneous microstructure and significant improvement in mechanical characteristics. The results of mechanical properties characterization reveal that addition of Ni led to a simultaneous improvement in 0.2% YS (up to 25%), UTS (up to 13%) and hardness (up to 62%). The ductility, however, stayed almost similar to the ductility of monolithic AZ31B in the case of AZ31B-1.5Al2O3-1.5Ni composite while it was compromised for AZ31B-1.5Al2O3-3.19Ni. The results clearly reveal the superior capability of AZ31B-Al2O3-Ni formulations in terms of overall mechanical response when compared to monolithic AZ31B. © 2010 Elsevier B.V.
Source Title: Materials Science and Engineering A
ISSN: 09215093
DOI: 10.1016/j.msea.2010.10.021
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