+Advanced Search
Effects of Aging Treatment on Microstructure Evolution and Mechanical Properties of Ti-6Al-3Nb-2Zr-Mo Alloy
Author:
Affiliation:

1.Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;2.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China;3.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Clc Number:

Fund Project:

National Key Research and Development Program (2018YFA0702900); National Natural Science Foundation of China (52173305, 52101061, 52233017, 52203384); Strategic Priority Research Program of the Chinese Academy of Sciences (XDC04000000); China Postdoctoral Science Foundation (2020M681004, 2021M703276); IMR Innovation Foundation (2022-PY12); LingChuang Research Project of China National Nuclear Corporation; Youth Innovation Promotion Association, CAS

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    In order to understand the influence of the different aging parameters on the microstructure and mechanical properties of Ti-6Al-3Nb-2Zr-Mo (Ti6321) alloy, the microstructures and mechanical properties under different aging parameters (temperatures ranging from 500 °C to 650 °C, 3–24 h) were investigated by optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and mechanical properties tests. The results reveal that the secondary α phase (αs) is more sensitive to the aging parameters than the primary α phase (αp). Moreover, the thickness of αs phase is positively correlated with aging temperature or aging time. As the aging temperature and aging time increase, the segregation of Ti and Al elements in the β transformation phase (βt) becomes obvious, and the αs phase changes from fine needle-like to long rod-like. When the alloy is aged at 600 °C for 12 h, the alloy shows good comprehensive mechanical performance. The tensile strength, yield strength, and elongation are 907 MPa, 796 MPa, and 16%, respectively, and the impact energy is 55 J.

    Reference
    Related
    Cited by
Get Citation

[Jiang Haiyang, Jiang Fuqing, Wang Bing, Xu Bin, Sun Mingyue. Effects of Aging Treatment on Microstructure Evolution and Mechanical Properties of Ti-6Al-3Nb-2Zr-Mo Alloy[J]. Rare Metal Materials and Engineering,2023,52(6):2002~2009.]
DOI:10.12442/j. issn.1002-185X.20220943

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:December 04,2022
  • Revised:February 07,2023
  • Adopted:February 14,2023
  • Online: July 03,2023
  • Published: June 30,2023