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ZHANG Shuaifeng, JIANG Peng, YU Bingbing, GONG Shuili, YANG Guang. Microstructures and mechanical properties of Ti-6Al-3Nb-2Zr-Mo alloy fabricated by electron beam rapid manufacturing[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(10): 121-126, 155. DOI: 10.12073/j.hjxb.2019400273
Citation: ZHANG Shuaifeng, JIANG Peng, YU Bingbing, GONG Shuili, YANG Guang. Microstructures and mechanical properties of Ti-6Al-3Nb-2Zr-Mo alloy fabricated by electron beam rapid manufacturing[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(10): 121-126, 155. DOI: 10.12073/j.hjxb.2019400273
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Microstructures and mechanical properties of Ti-6Al-3Nb-2Zr-Mo alloy fabricated by electron beam rapid manufacturing

  • 1.

    Luoyang Ship Material Research Institute, Luoyang 471039, China

  • 2.

    Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China

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  • Received Date: September 15, 2018
  • Available Online: July 12, 2020
    Graphical Abstract
    • Abstract
  • The Chemical compositions, microstructure, mechanical properties, toughness of Ti6321 alloy made by electron beam rapid manufacturing (EBRM) were studied. The 1% of Al in the solder wire was burned during the manufacturing process, and no element segregation was found. The as-built microstructures exhibit large columnar grains, which grew epitaxially along the height direction of deposits through many deposition layers. The columnar grain is mainly composed of α lamellae. As a result, the anisotropic coefficient of tensile strength is 2. 6%. Dimple are observed on fractured tensile specimens in both X and Z directions. The impact toughness of X and Z direction is not less than 80J, and the anisotropic coefficient of toughness is 2.6%. The impact fracture is typical ductile fracture, which consists of a large number of dimples.
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    • References (17)
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