Effect of Heating Temperature on Microstructures and Tribological Properties of Near βTi Alloy

Bo Song, Yisen Wang, Wenlong Xiao, Chaoli Ma, Lian Zhou, Yanbiao Ren, Ruipu Li, Hui Chen, Hongyang Wang, Tianwen Zhen, Jiamu Fu, Baoyu Shi

Research output: Contribution to journalArticlepeer-review

Abstract

The influence of heating temperature on microstructures and tribological properties of near βTi alloy Ti-5Al-3Mo-3V-2Cr-2Zr-1Nb-1Fe (wt.%) has been studied in this work. The volume fraction of primary α decreases gradually with solution temperature increasing, and as a result, the hardness and wear resistance are reduced. After aging treatment, the wear resistance of alloy is obviously improved. During aging the secondary α precipitates coarsen with aging temperature increasing. Secondary α precipitates are more effective to strengthen alloy than primary α. During friction process with stainless steel, the wear mechanisms of aged samples are mixture of abrasive wear, adhesive wear, and oxidation wear. Thermodynamic calculation by JmatPro software shows that the thickness growth rate (v) of α precipitates and aging temperature (T) obey the formula of v = 489.1936 × 100.0424 T, which is evidenced by experimental results. The transformation of α phase from β is corresponded with the BOR relationships, {110}β//{0001}α and [111]β//[11 2¯ 0]α.

Original languageEnglish
Pages (from-to)11484-11493
Number of pages10
JournalJournal of Materials Engineering and Performance
Volume33
Issue number21
DOIs
StatePublished - Nov 2024
Externally publishedYes

Keywords

  • heat treatments
  • microstructures
  • titanium alloy
  • tribological properties

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