Influence of oxygen and zirconium contents on the mechanical properties of Ti-23Nb-0.7Ta-Zr-O alloys

Kunlun Si, Xu Wang, Zhaolong Yin, Yi Yang, Songquan Wu, Geping Li, Kai Zhang, Hao Wang, Aijun Huang

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Abstract

Ti-23Nb-0.7Ta-(0, 2)Zr-(1.2, 4, 6, 10)O alloys were prepared using a non-consumable arcmelting method. The tensile property of Ti-23Nb-0.7Ta-2Zr-1.2O alloys was tested at temperatures from −196C to 750C. The influence of O and Zr contents on thermal forgeability, room-temperature hardness and tensile property at 750C was investigated. For Ti-23Nb-0.7Ta-2Zr-1.2O alloy, the tensile strength decreased, and the ductility increased with the temperature increase. O and Zr had a negative effect on the thermal forgeability. Room-temperature hardness and tensile strength increased with an increase in O and Zr contents due to interstitial, solid solution strengthening and second-phase strengthening. All of the alloys exhibited high ductility at 750C with the total elongation above 34% and reductions in area above 80%.

Original languageEnglish
Article number1018
Number of pages13
JournalMetals
Volume12
Issue number6
DOIs
Publication statusPublished - 16 Jun 2022

Keywords

  • element
  • mechanical property
  • microstructure
  • titanium alloy

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