The Nb-Mo-Ta-W series refractory high-entropy alloys with composition recombination design were manufactured by laser metal deposition process. The phase structure, defects and microstructure of(NbMoTa)90W10 and(NbMoTaTi)90W10 high-entropy alloys were characterized and analyzed by X-ray diffraction and scanning electron microscope. The tensile properties of the two alloys were tested at room temperature by multifunctional mechanical testing machine. The results showed that both(NbMoTa)90W10 and(NbMoTaTi)90W10 high-entropy alloys are single-phase body centered cubic structures. Ti element forms a "liquid film" at the grain boundaries in Nb-Mo-Ta-W series alloy, which can effectively suppress intergranular cracks. Due to the reduction of metallurgical defects and the lattice distortion effect, the mechanical property of(NbMoTaTi)90W10 high-entropy alloy at room temperature is improved, and the yield strength reaches 1156 MPa.


    Access

    Download


    Export, share and cite



    Title :

    Effect of Ti on defects in Nb-Mo-Ta-W high-entropy alloy prepared by laser metal deposition


    Contributors:
    LI Qingyu (author) / LIANG Jingyi (author) / CHEN Minrui (author) / YANG Zhihai (author) / PENG Hang (author) / LI Dichen (author)


    Publication date :

    2023




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    Direct Laser Metal Deposition of Al 7050 Alloy

    Ramakrishnan, Abhishek / Singh, Amrinder / Dinda, Guru | SAE Technical Papers | 2017


    Research and application progress of high entropy alloy materials in laser additive repair

    LI Zhanming / WANG Menglu / SUN Xiaofeng et al. | DOAJ | 2024

    Free access

    Application of high-entropy alloy in skiing equipment

    LI YANGDE / PANG AILIAN | European Patent Office | 2021

    Free access

    USE OF HIGH-ENTROPY ALLOY IN SKI EQUIPMENT

    LI YEUNG TAK LUGEE / PANG AILIAN | European Patent Office | 2022

    Free access

    Low-dimensional Si structures prepared by laser deposition [3182-34]

    Svechnikov, S. V. / Kaganovich, E. B. / Manoilov, E. G. et al. | British Library Conference Proceedings | 1997