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Macromechanism Destruction of Structurally and Crystallographically Textured Titanium Billets

  • M. A. SkotnikovaEmail author
  • G. V. Ivanova
  • A. A. Strelnikova
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

A systematic investigation of fracture features of structurally and crystallographically textured billets in a two-phase Ti-6A1-IV-IMo alloy impact and low-cycle tested with a light metallographic, X-ray, and scanning electron microscopy was carried out. It is indicated that a reduction of the tensile properties is induced by the structurally and crystallographically precipitated fields of basis orientation of the interface boundaries of 20–30 µm in width spaced across the thickness billet by 100–170 µm. They are responsible for increasing the anisotropy of shock values and increasing the scattering of the results of low-cycle tests of samples in two-phase titanium alloys. The lower the applied stress value at the time of the specimen testing (impact or cyclic), the more the contribution of crack initiation period in its life time, the more important is the account of the number and geometry of the location in a bulk of the flat billets of such structurally and crystallographically pronounced fields effecting on the fracture mechanism change of the tested samples.

Keywords

Titanium alloys Structure Impact values Fatigue Electron microscopy Fracture mechanism 

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • M. A. Skotnikova
    • 1
    Email author
  • G. V. Ivanova
    • 1
  • A. A. Strelnikova
    • 1
  1. 1.Peter the Great St.-Petersburg Polytechnic UniversitySt.-PetersburgRussia

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