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

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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.

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ACKNOWLEDGMENTS

The authors are grateful to be supported by Natural Science Foundation of Jiangsu Province, P.R. China under Grant No. BK20131144, the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), the Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP), the Ministry of Education and Science within the framework of the Project No. 16.1969.2017/PCh, and the Science and Technology Bureau of Jiangsu Province, P.R. China under Grant No. BY2016029-19.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Changzhou University, Changzhou, 213164, People’s Republic of China

    Kun Xia Wei, Yan Wei Zhang, Wei Wei, Xian Liu, Qing Bo Du & Jing Hu

  2. Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou, 213164, People’s Republic of China

    Kun Xia Wei, Yan Wei Zhang, Wei Wei, Xian Liu & Jing Hu

  3. Sino-Russia Joint Laboratory of Functional Nanostructured Materials, Changzhou University, Changzhou, 213164, People’s Republic of China

    Kun Xia Wei, Yan Wei Zhang, Wei Wei, Xian Liu, Qing Bo Du & Jing Hu

  4. National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou, 213164, People’s Republic of China

    Kun Xia Wei, Wei Wei, Qing Bo Du, Igor V. Alexandrov & Jing Hu

  5. Department of Physics, Ufa State Aviation Technical University, 450008, Ufa, Russia

    Igor V. Alexandrov

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  1. Kun Xia Wei
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  2. Yan Wei Zhang
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  3. Wei Wei
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  6. Igor V. Alexandrov
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  7. Jing Hu
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Correspondence to Wei Wei or Igor V. Alexandrov.

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Wei, K.X., Zhang, Y.W., Wei, W. et al. Enhancing grain refinement efficiency and fading resistance of Al–B master alloys processed by equal channel angular pressing. Journal of Materials Research 33, 1782–1788 (2018). https://doi.org/10.1557/jmr.2018.95

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  • DOI: https://doi.org/10.1557/jmr.2018.95

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