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Influence of Silicon and Manganese on the Mechanical Properties of Additive Manufactured Cu–Al Alloys by Cold Metal Transfer Welding

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Abstract

Cu–6.5% Al alloys and Cu–6.5% Al alloys containing small amounts of silicon (Si) and manganese (Mn) were deposited using wire arc additive manufacturing (WAAM) by feeding two different components of wires simultaneously into the molten pool. The deposited alloys were homogenized by heat treatments at 800 °C (2 h). The effect of addition of Si and Mn on the microstructure and mechanical properties of Cu–6.5% Al alloys were investigated. Microstructural and formation of intermetallic compounds were studied. Results revealed that upon heat treatment, Si and Mn were able to restrain the dislocation movement due to the formation of second-phase particles. When compared to Cu–Al alloys, mechanical testing of the Cu–6.5% Al alloys having Si and Mn showed that hardness had increased by120 Hv, ultimate tensile strength (UTS) had increased by 284 MPa and yield strength (YS) had increased by 365 MPa, whereas its elongation (EL) had decreased by 22%.

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Acknowledgements

This work was sponsored by the National Natural Science Foundation of China under the Grant no. 51975419 and Zhejiang Provincial Natural Science Foundation of China under Grant No. LY20E050027 and Foreign Experts Bureau Project of China under Grant No. QN20200116001.

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Authors and Affiliations

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

    Yanhu Wang, Sergey Konovalov, Xizhang Chen, Arvind Singh Ramachandra, Jayalakshmi Subramanian & Xiaoming Pan

  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. Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences, 2/3 Akademichesky Avenue, Tomsk, Russia, 634055

    Yurii Ivanov

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  1. Yanhu Wang
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  2. Sergey Konovalov
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  3. Xizhang Chen
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  4. Arvind Singh Ramachandra
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  5. Jayalakshmi Subramanian
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  6. Yurii Ivanov
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  7. Xiaoming Pan
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Correspondence to Xizhang Chen.

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Wang, Y., Konovalov, S., Chen, X. et al. Influence of Silicon and Manganese on the Mechanical Properties of Additive Manufactured Cu–Al Alloys by Cold Metal Transfer Welding. Metallogr. Microstruct. Anal. 10, 314–320 (2021). https://doi.org/10.1007/s13632-021-00740-y

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