Materials (2018-03-01)

Novel Anisotropic Ductility of a High Strength Annealed Ti-20Zr-6.5Al-4V Alloy

  • Bing Zhang,
  • Xing Zhang,
  • Yuanzhi Jia,
  • Xinyu Zhang,
  • Mingzhen Ma,
  • Riping Liu,
  • Qin Jing

DOI
https://doi.org/10.3390/ma11040529
Journal volume & issue
Vol. 11, no. 4
p. 529

Abstract

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In this work, we investigate the mechanical properties of an annealed high strength Ti-20Zr-6.5Al-4V alloy in uniaxial tensile tests in different directions. The results show that the alloy exhibits obvious anisotropic ductility in different directions, while the tensile strength of the alloy remains almost unchanged. This phenomenon is closely related to α laths with similar orientations along the prior-β grain boundaries. These α laths significantly affect the initiation and propagation of cracks when the alloy reaches its yield limit, thereby affecting the ductility of the alloy, such that it exhibits anisotropic ductility.

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