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Study of orientation relationship between Al matrix and several typical inclusions in Al alloy by edge-to-edge matching model

Published online by Cambridge University Press:  09 April 2017

Yu Liu ,
Yuanchun Huang  and
Zhengbing Xiao
Yu Liu
Affiliation:
Research Institute of Light Alloy, Central South University, Changsha 410083, China; and Nouferrous Metal Oriented Advanced Structural Materials and Manufacturing Cooperative Innovation Center, Central South University, Changsha 410083, China
Yuanchun Huang*
Affiliation:
Research Institute of Light Alloy, Central South University, Changsha 410083, China; College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China; and Nouferrous Metal Oriented Advanced Structural Materials and Manufacturing Cooperative Innovation Center, Central South University, Changsha 410083, China
Zhengbing Xiao
Affiliation:
Research Institute of Light Alloy, Central South University, Changsha 410083, China; College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China; and Nouferrous Metal Oriented Advanced Structural Materials and Manufacturing Cooperative Innovation Center, Central South University, Changsha 410083, China
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

The orientation relationship (OR) between Al matrix and several typical inclusions, Al2O3, MgO, AlN, TiB2, and AlB2, in Al alloy have been studied by edge-to-edge matching model and refined with Δg theory. Based on the calculation of interatomic spacing misfit and interplanar spacing misfit, the number of ORs between Al and Al2O3, MgO, AlN, TiB2, AlB2 were predicted to be 1, 7, 2, 2, and 2, respectively. The result reveals that the wettability of Al to the studied inclusions could rank as MgO, AlB2, TiB2, AlN, Al2O3 in the order of decreasing, and the removability of those particles from aluminum melt rank in an opposite way from the perspectives of crystallography features of interfacial energy. Moreover, Al2O3 have a higher sensitivity to the performance of a processed aluminum alloy component than other inclusions, and MgO has the minimal impact, when the studied inclusions were residual in aluminum alloy.

Keywords

aluminum alloyinclusionsorientation relationshipedge-to-edge matching modelremovability
Type
Articles
Information
Journal of Materials Research , Volume 32 , Issue 11 , 14 June 2017 , pp. 2092 - 2099
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Copyright
Copyright © Materials Research Society 2017 

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Footnotes

Contributing Editor: Jürgen Eckert

References

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