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Study of comparative effectiveness of thermally stable nanoparticles on high temperature deformability of wrought AZ31 alloy

Published online by Cambridge University Press:  03 June 2014

Syed Fida Hassan ,
Muralidharan Paramsothy ,
Bekir Sami Yilbas  and
Manoj Gupta
Syed Fida Hassan*
Affiliation:
Department of Mechanical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Kingdom of Saudi Arabia
Muralidharan Paramsothy
Affiliation:
Department of Mechanical Engineering, National University of Singapore, Singapore 117576, Singapore
Bekir Sami Yilbas
Affiliation:
Department of Mechanical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Kingdom of Saudi Arabia
Manoj Gupta
Affiliation:
Department of Mechanical Engineering, National University of Singapore, Singapore 117576, Singapore
*
a)Address all correspondence to this author. e-mail: [email protected], [email protected]
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Abstract

Thermally stable nanosized Al2O3 particles and carbon nanotubes (CNTs) are comparatively effective in simultaneous improvement of strength and ductility of wrought magnesium alloy AZ31 when incorporated in microstructure. Understanding the comparative effectiveness of these nanosized reinforcements on the high temperature deformation process of wrought AZ31 alloy is important for its potential wider automotive body application. The current study has revealed that both reinforcements are competitively effective in inducing matrix grain and intermetallic particles refinement and strengthening almost to a theoretically predicted value. Although high temperature flow stress of AZ31 was found to closely match due to incorporation of both of the nanosized reinforcements, alumina was more efficient in improving the failure strain of matrix alloy. Addition of remarkably a small amount of nanosized alumina particles or CNTs introduced huge potential in near net shape formability of AZ31 alloy at a temperature much below than the widely used 350 °C. Among the two reinforcements used in this study, alumina was found to be more efficient when compared to the effect of CNTs.

Keywords

AZ31dynamic recrystallizationflow stressductilitynanosized reinforcement
Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 11 , 14 June 2014 , pp. 1264 - 1269
Copyright
Copyright © Materials Research Society 2014 

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References

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