Effect of Crystal Lattice Parameters of Surface Gas-Saturated Layers on Ductility of Titanium Alloys Under Tensile Tests


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Abstract

Sheets from titanium alloys VT18U and Ti6Al7Nb are studied after isothermal annealing at 560°C for 1000 h in an air atmosphere. Tensile tests of the specimens are performed. The elongation of the samples of VT18U and Ti6Al7Nb is shown to differ substantially in oxidized condition. Metallographic, fractographic and x-ray diffraction analyses are performed for determining the main parameters affecting the ductility of the alloys in oxidized condition. The effect of the surface gas-saturated layer on the mechanical properties of the alloys is studied, and the factors influencing the ductility of the oxidized samples in tensile tests are determined.

About the authors

M. S. Kalienko

VSMPO–AVISMA Corporation; B. N. Eltsyn Ural Federal University

Author for correspondence.
Email: kamak@yandex.ru
Russian Federation, Verkhnyaya Salda; Ekaterinburg

A. V. Volkov

VSMPO–AVISMA Corporation; B. N. Eltsyn Ural Federal University

Email: kamak@yandex.ru
Russian Federation, Verkhnyaya Salda; Ekaterinburg

A. V. Zhelnina

VSMPO–AVISMA Corporation; B. N. Eltsyn Ural Federal University

Email: kamak@yandex.ru
Russian Federation, Verkhnyaya Salda; Ekaterinburg

M. O. Leder

VSMPO–AVISMA Corporation; B. N. Eltsyn Ural Federal University

Email: kamak@yandex.ru
Russian Federation, Verkhnyaya Salda; Ekaterinburg

P. E. Panfilov

VSMPO–AVISMA Corporation; B. N. Eltsyn Ural Federal University

Email: kamak@yandex.ru
Russian Federation, Verkhnyaya Salda; Ekaterinburg

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