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Home > Archive>Volume 52, Issue 9, 2023 >3019-3025. DOI:10.12442/j.issn.1002-185X.E20220034
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Microstructure and Properties of High Strength Tantalum Prepared by Selective Electron Beam Melting
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State Key Laboratory of Porous Metal Materials, Northwest Institute for Nonferrous Metal Research, Xi 'an 710016, China

Fund Project:

Major Science and Technology Projects in Shaanxi Province (2019zdzx01-04-03); Key R&D Plan of Guangdong Province (2018B090906003)

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    Abstract:

    Bulk tantalum specimens of high relative density (99.93%) without obvious defects were prepared by powder bed selective electron beam melting (SEBM) process, and their microstructure as well as mechanical properties were investigated. Results show that the as-deposited tantalum specimens have strong columnar grain structures parallel to the building direction. The strong (001) texture and a large number of low-angle grain boundaries can be observed in the bulk specimens due to the extremely high cooling rate during additive manufacturing. Because of the solid solution strength of interstitial oxygen and nitrogen elements, the as-SEBMed tantalum specimens exhibit excellent room-temperature yield strength of 613.55±2.57 MPa and outstanding elongation of 30.55%±4.23%.

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[Yang Kun, Wang Jian, Yang Guangyu, Liu Nan, Jia Liang. Microstructure and Properties of High Strength Tantalum Prepared by Selective Electron Beam Melting[J]. Rare Metal Materials and Engineering,2023,52(9):3019~3025.]
DOI：10.12442/j. issn.1002-185X. E20220034

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History
  • Received:November 11,2022
  • Revised:April 19,2023
  • Adopted:April 26,2023
  • Online: September 22,2023
  • Published: September 21,2023

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