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XU Junqiang, PENG Yong, ZHOU Qi, WANG Kehong, ZHU Jun. Study on plasma wire and arc additive manufacturing process of titanium alloys with twin-wire feeding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(9): 59-64. DOI: 10.12073/j.hjxb.2019400236
Citation: XU Junqiang, PENG Yong, ZHOU Qi, WANG Kehong, ZHU Jun. Study on plasma wire and arc additive manufacturing process of titanium alloys with twin-wire feeding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(9): 59-64. DOI: 10.12073/j.hjxb.2019400236
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Study on plasma wire and arc additive manufacturing process of titanium alloys with twin-wire feeding

  • 1.

    Nanjing University of Science and Technology, Nanjing 210094, China

  • 2.

    Nanjing Institute of Technology, Nanjing 211167, China

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  • Received Date: August 23, 2018
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    • Abstract
  • TC4-TA2 titanium alloy component was deposited by plasma wire arc additive manufacturing with twin-wire feeding and its good depositional morphology and excellent mechanical properties were expected. OM, SEM, EDS, XRD, tensile and hardness test were carried out to study the macro and microstructure of the component, as well as mechanical properties. The results showed that there were two kinds of microstructures in the component. They were the colonies of α phase which was distribute in the junction of the deposited layer and the lamellar of α + β phase which was distribute in the center of the deposited layer. The tensile strength of specimens in the vertical and horizontal directions were 998 MPa and 1 037 MPa, respectively. Meanwhile, their elongation at break were 9.2% and 5.7% and the fracture appeared as brittle cleavage fracture. The experimental results showed that the plasma arc additive manufacturing with twin-wire feeding can realize the preparation of dissimilar titanium alloy components.
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