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Deformation Behavior of Cu-6.5 wt.% Al Alloy Under Quasi-Static Tensile Loading

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Abstract

Wire-arc additive manufacturing (WAAM) based on cold metal transfer (CMT) welding process has been used to fabricate Cu-6.5 wt.% Al alloy by simultaneously feeding two separate wires. The deformation behavior of as-fabricated Cu-6.5 wt.% Al alloy and heat-treated Cu-6.5 wt.% Al alloy under quasi-static (0.1 s−1) tension was investigated. The obtained tensile results show that the heat treatment can improve the mechanical properties. The enhancements of strength and ductility originate from the work-hardening capacity and fine grain due to solid solution strengthening. The TEM characterization of the samples has shown the existence of deformation twinning. The optical micrographs have shown that during the tensile process, cracks are first formed inside the large grains, and then the cracks propagate, which cause dendritic columnar structure are broken into fragments.

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Acknowledgments

This work was sponsored by the National Natural Science Foundation of China under the Grant No. 51975419.

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Authors and Affiliations

  1. School of Mechanical and Electrical Engineering, Wenzhou University, Chashan Education Town, Wenzhou, 325035, China

    Yanhu Wang, Sergey Konovalov & Xizhang Chen

  2. Department of Metals Technology and Aviation Materials, Samara National Research University, 34, Moskovskoye Shosse, Samara, Russia, 443086

    Yanhu Wang, Sergey Konovalov & Xizhang Chen

  3. Department of Metal Forming of National University of Science and Technology, “MISIS”, 4, Leninsky pr., Moscow, Russia, 119049

    Vladislav B. Deev

  4. Department of Functional and Constructional Materials Technology, Vladimir State University, 87, Gorky St., Vladimir, Russia, 600000

    Evgeny S. Prusov

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  1. Yanhu Wang
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  2. Sergey Konovalov
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  4. Vladislav B. Deev
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Correspondence to Xizhang Chen.

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This invited article is part of a special topical focus in the Journal of Materials Engineering and Performance on Additive Manufacturing. The issue was organized by Dr. William Frazier, Pilgrim Consulting, LLC; Mr. Rick Russell, NASA; Dr. Yan Lu, NIST; Dr. Brandon D. Ribic, America Makes; and Caroline Vail, NSWC Carderock.

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Wang, Y., Konovalov, S., Chen, X. et al. Deformation Behavior of Cu-6.5 wt.% Al Alloy Under Quasi-Static Tensile Loading. J. of Materi Eng and Perform 30, 5086–5092 (2021). https://doi.org/10.1007/s11665-021-05643-1

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  • DOI: https://doi.org/10.1007/s11665-021-05643-1

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