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TIAN Yinbao, SHEN Junqi, HU Shengsun, LI Huan, GOU Jian. Ti/Al dissimilar metals fabricated by cold metal transfer additive manufacturing[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(8): 13-17. DOI: 10.12073/j.hjxb.2019400202
Citation: TIAN Yinbao, SHEN Junqi, HU Shengsun, LI Huan, GOU Jian. Ti/Al dissimilar metals fabricated by cold metal transfer additive manufacturing[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(8): 13-17. DOI: 10.12073/j.hjxb.2019400202
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Ti/Al dissimilar metals fabricated by cold metal transfer additive manufacturing

  • 1.

    Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300354, China;School of Materials Science and Engineering, Tianjin University, Tianjin 300354, China

  • 2.

    School of Materials Science and Engineering, Tianjin University, Tianjin 300354, China

  • 3.

    Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300354, China

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  • Received Date: November 18, 2018
    Graphical Abstract
    • Abstract
  • Dissimilar alloys component was fabricated using TC4 and ER2319 wires by direct/variable polarity cold metal transfer. Microstructure and mechanical properties of Ti/Al component were analyzed by optical microscope, scanning electron microscope, transmission electron microscopy, energy dispersive X-ray spectrometer, nanoindentation, microhardness test and tensile test. The results shown that minute Ti alloy was melted when Al alloy was deposited on the surface of Ti alloy. Ti atoms diffused to liquid Al alloy and the long strip TiAl3 phases were formed with difference length. The reaction layer about 10 μm in thickness was formed at the Ti/Al interface. The reaction layer near the Ti alloy side was continuous. The reaction layer near the Al alloy was long strip or block shape. The microhardness of reaction layer was between Al alloy and Ti alloy. The maximum tensile strength of the component was 111 MPa. Fracture occurred in the Ti/Al reaction layer for all samples.
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    • References (17)
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