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Effect of spheroidization of eutectic Si on mechanical properties of eutectic Al–Si alloys

Published online by Cambridge University Press:  05 June 2018

Jianhua Wang Open the ORCID record for Jianhua Wang [Opens in a new window] ,
Jiaqing Zhu ,
Ya Liu ,
Haoping Peng  and
Xuping Su
Jianhua Wang
Affiliation:
Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, China; and Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China
Jiaqing Zhu
Affiliation:
Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, China; and Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China
Ya Liu
Affiliation:
Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, China; and Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China
Haoping Peng
Affiliation:
Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, China; and Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China
Xuping Su*
Affiliation:
Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, China; and Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China
*
a)Address all correspondence to this author. e-mail: sxping@cczu.edu.cn
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Abstract

Al–12.6Si was annealed at both 500 and 560 °C for different lengths of time in this study. Additionally, the effects of annealing treatment on the spheroidization of eutectic Si and the mechanical properties of the Al–Si alloy have been investigated. The morphology of these particles was described using surface shape factor (φ), and it was found that the optimal annealing time of Al–12.6Si at 500 and 560 °C is seven hours and five hours, respectively. The average size of the Si particles in the Al–Si alloy annealed at 500 °C is less than that of the particles at 560 °C. The roundness of the Si particles within the Al–Si alloy annealed at 500 °C is slightly better than that at 560 °C. The elongation of the alloy apparently increases, while the tensile strength of the Al–Si alloy decreases. The tensile strength and elongation of the eutectic Al–Si alloy annealed at 500 °C is higher than that at 560 °C.

Keywords

alloyannealingmorphology
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 12 , 28 June 2018 , pp. 1773 - 1781
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Copyright
Copyright © Materials Research Society 2018 

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