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Enhancing grain refinement efficiency and fading resistance of Al–B master alloys processed by equal channel angular pressing

Published online by Cambridge University Press:  23 April 2018

Kun Xia Wei ,
Yan Wei Zhang ,
Wei Wei Open the ORCID record for Wei Wei [Opens in a new window] ,
Xian Liu ,
Qing Bo Du ,
Igor V. Alexandrov  and
Jing Hu Open the ORCID record for Jing Hu [Opens in a new window]
Kun Xia Wei*
Affiliation:
School of Materials Science and Engineering, Changzhou University, Changzhou 213164, People’s Republic of China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, People’s Republic of China; Sino-Russia Joint Laboratory of Functional Nanostructured Materials, Changzhou University, Changzhou 213164, People’s Republic of China; and National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, People’s Republic of China
Yan Wei Zhang
Affiliation:
School of Materials Science and Engineering, Changzhou University, Changzhou 213164, People’s Republic of China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, People’s Republic of China; and Sino-Russia Joint Laboratory of Functional Nanostructured Materials, Changzhou University, Changzhou 213164, People’s Republic of China
Wei Wei*
Affiliation:
School of Materials Science and Engineering, Changzhou University, Changzhou 213164, People’s Republic of China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, People’s Republic of China; Sino-Russia Joint Laboratory of Functional Nanostructured Materials, Changzhou University, Changzhou 213164, People’s Republic of China; and National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, People’s Republic of China
Xian Liu
Affiliation:
School of Materials Science and Engineering, Changzhou University, Changzhou 213164, People’s Republic of China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, People’s Republic of China; and Sino-Russia Joint Laboratory of Functional Nanostructured Materials, Changzhou University, Changzhou 213164, People’s Republic of China
Qing Bo Du
Affiliation:
School of Materials Science and Engineering, Changzhou University, Changzhou 213164, People’s Republic of China; Sino-Russia Joint Laboratory of Functional Nanostructured Materials, Changzhou University, Changzhou 213164, People’s Republic of China; and National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, People’s Republic of China
Igor V. Alexandrov*
Affiliation:
Department of Physics, Ufa State Aviation Technical University, 450008 Ufa, Russia; and National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, People’s Republic of China
Jing Hu
Affiliation:
School of Materials Science and Engineering, Changzhou University, Changzhou 213164, People’s Republic of China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, People’s Republic of China; Sino-Russia Joint Laboratory of Functional Nanostructured Materials, Changzhou University, Changzhou 213164, People’s Republic of China; and National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, People’s Republic of China
*
a)Address all correspondence to these authors. e-mail: [email protected]
b)e-mail: [email protected]
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Abstract

An Al–3% B master alloy has been subjected to equal channel angular pressing (ECAP). The grain refining performance and fading resistance of an Al–3% B master alloy on a commercial purity Al (CPA) have been evaluated. The effect of the number of ECAP passes on the size and the distribution of the AlB2 particles, the grain size of CPA ingots with and without adding the Al–3% B master alloy subjected to ECAP have been investigated. The mean size of AlB2 particles was significantly reduced from ∼34 to ∼12 μm after four ECAP passes. Fine blocky AlB2 particles were uniformly distributed in the Al matrix. It has been revealed that when it was inoculated by the Al–B master alloy subjected to ECAP, the grain size of α-Al was decreased from ∼1200 to ∼180 μm after four ECAP passes, beyond that, the grain size tends to be saturated. It has been proved that grain refinement efficiency and fading resistance of the Al–3% B master alloy subjected to ECAP in CPA ingots was enhanced.

Keywords

commercial purity AlAl–B master alloyECAPgrain refinementfading resistance
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 12 , 28 June 2018 , pp. 1782 - 1788
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Copyright
Copyright © Materials Research Society 2018 

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