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Effect of Double Oxide Film Defects on Mechanical Properties of As-Cast C95800 Alloy

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

The morphology of double oxide film defects and their influence on the tensile mechanical properties of a commercial Cu–Al (C95800) alloy were investigated in this study. Plane castings were produced with two types of pouring systems, and their tensile properties were measured and then analyzed by means of Weibull statistics method. The fracture surfaces of the tensile specimens were examined using scanning electron microscopy equipped with energy-dispersive spectroscopy. A large amount of double oxide film defects were observed on the tensile fractured specimens of the top-filled plane castings, and their chemical composition is identified to be Al2O3. Weibull statistics analyses showed that the double oxide film defects significantly reduce mechanical properties of the castings investigated. Furthermore, the ultimate tensile strength is more obviously deteriorated by double oxide film defects than elongation.

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Acknowledgements

Many thanks are to Dr. H.X. Shen and Dr. Y.D. Jia from Harbin Institute of Technology for useful discussion.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China

    Xin-Yi Zhao, Zhi-Liang Ning, Fu-Yang Cao, Shan-Guang Liu, Yong-Jiang Huang & Jian-Fei Sun

  2. National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin, 150001, China

    Xin-Yi Zhao, Zhi-Liang Ning, Fu-Yang Cao, Shan-Guang Liu, Yong-Jiang Huang & Jian-Fei Sun

  3. School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China

    Jing-Shun Liu

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  1. Xin-Yi Zhao
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Correspondence to Jian-Fei Sun.

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Zhao, XY., Ning, ZL., Cao, FY. et al. Effect of Double Oxide Film Defects on Mechanical Properties of As-Cast C95800 Alloy. Acta Metall. Sin. (Engl. Lett.) 30, 541–549 (2017). https://doi.org/10.1007/s40195-016-0526-7

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  • DOI: https://doi.org/10.1007/s40195-016-0526-7

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