Published date:Apr 15 2019

Journal Title: KnE Engineering

Issue title: XIX International scientific-technical conference “The Ural school-seminar of metal scientists-young researchers”

Pages:267–274

DOI: 10.18502/keg.v1i1.4419

F. V. Vodolazskiy

S. M. Illarionova

N. A. Barannikova

Ya. I. Kosmatskiy

E. A. Gornostaeva

A. G. Illarionov

In this paper the interrelation between the structure, hardness and strain resistance at 875 ∘C of the hot-forged pipe billet of the titanium alloy PT-7M (Ti-2.2Al-2.5Zr) was studied by the methods of macro, micro, XRDA, durometric analyzes and hot upsetting operation at 875 ∘C. It was found, that the volume fraction of the large grains reduced and recrystallized from the center to the surface of the pipe billet. As a result, hardness and strain resistance grew at 875 ∘C from the center to the surface of the billet.

Keywords: titanium alloy PT-7M, hot deformation, phase composition, structure, texture, hardness, strain resistance.

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