• Chinese Journal of Lasers
  • Vol. 47, Issue 12, 1202006 (2020)
Hu Yue1, Liu Shasha1, Cheng Xu1、*, and Liu Dong1、2
Author Affiliations
  • 1National Engineering Laboratory of Additive Manufacturing for Large Metallic Components, School of Materials Science and Engineering, Beihang University, Beijing 102206, China
  • 2Yu Ding Additive Manufacturing Research Institute Co., Ltd., Beijing 100025, China
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    DOI: 10.3788/CJL202047.1202006 Cite this Article Set citation alerts
    Hu Yue, Liu Shasha, Cheng Xu, Liu Dong. Finite Element Simulation on Bending Properties of TA2/TA15 Gradient Material by Laser Direct Deposition[J]. Chinese Journal of Lasers, 2020, 47(12): 1202006 Copy Citation Text show less

    Abstract

    TA2/TA15 gradient material was prepared using the laser direct deposition technique. The microstructural evolution and bending properties of this material were investigated, and the stress-strain behaviors of the gradient-transition zone with different compositions were discussed by finite-element simulation. The results show that when the alloy composition transitions from TA15 of bottom to TA2, the microstructure gradually changes from an α+β basket-weave phase to a single-α phase, the types of alloy elements and β-phase volume fraction gradually decrease, and the α-phase volume fraction gradually increases. The microhardness and bending strength increase with the increase of Al-element content and the bending strength gradually increases from 964 MPa to 2156 MPa. The finite element stress field simulation results show that the top is subjected to compressive stress and the bottom is subjected to tensile stress during bending deformation of the specimen. Compared with the TA15 sample, the decrease of Al content will reduce the bending strength of the gradient material but greatly improve the plastic ability and achieve the uniform stress transition. Among all the samples, GZ-3 has the best comprehensive properties.
    Hu Yue, Liu Shasha, Cheng Xu, Liu Dong. Finite Element Simulation on Bending Properties of TA2/TA15 Gradient Material by Laser Direct Deposition[J]. Chinese Journal of Lasers, 2020, 47(12): 1202006
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