Microstructure and mechanical properties of TC18 titanium alloy

Shuyu Sun, Weijie Lv

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Ti-5Al-5Mo-5V-1Fe-1Cr Ti alloy (TC18) was fabricated via a consumable vacuum arc-remelting furnace, and then subjected to thermo-mechanical processing and heat treatment. The microstructural characteristics and mechanical properties of the heat-treated alloy were investigated. Results show that primary α phase exhibits spherical, near equiaxed, plate- and rod-shaped morphologies after heat treatment. This is associated with boundary segregation of α grain. The alloy presents a good combination of strength and plasticity during tensile test. However, the value of σy/σb of the alloy reaches 0.95. It is suggested that the grain boundaries absorb dislocations during tensile test; therefore, the dislocation strengthening increases very slowly. This is the primary reason for the high value of σy/σb.
Original languageEnglish (US)
Pages (from-to)1138-1141
Number of pages4
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume45
Issue number5
StatePublished - May 1 2016
Externally publishedYes

ASJC Scopus subject areas

  • Materials Chemistry
  • Metals and Alloys
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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