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Physics of Metals and Metallography

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01-09-2022 | STRENGTH AND PLASTICITY

Rotary Forging to Improve the Strength Properties of the Zr–2.5% Nb Alloy

Authors: S. O. Rogachev, V. A. Andreev, M. V. Gorshenkov, D. V. Ten, A. S. Kuznetsova, A. B. Shcherbakov

Published in: Physics of Metals and Metallography | Issue 9/2022

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Abstract

One of the techniques of severe plastic deformation, which has been used to improve the strength of the biocompatible zirconium alloy Zr–2.5% Nb (E125), is rotary forging. Swaging of an initially recrystallized alloy rod from a diameter of 12 mm to a diameter of 6.5 mm resulted in the formation of a grain–subgrain oriented microstructure characterized by a high density of dislocations and a predominance of low-angle misorientations of structural elements. These structural changes led to an increase in the yield strength and in the ultimate tensile strength of the alloy by a factor of 2.1 and 1.6, respectively. The alloy has a good plasticity margin after rotary swaging; the relative elongation is 14%. The complex of mechanical properties achieved for the Zr–2.5% Nb alloy meets the requirements for dental implant materials.

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Title: Rotary Forging to Improve the Strength Properties of the Zr–2.5% Nb Alloy
Authors: S. O. Rogachev
V. A. Andreev
M. V. Gorshenkov
D. V. Ten
A. S. Kuznetsova
A. B. Shcherbakov
Publication date: 01-09-2022
Publisher: Pleiades Publishing
Published in: Physics of Metals and Metallography / Issue 9/2022
Print ISSN: 0031-918X
Electronic ISSN: 1555-6190
DOI: https://doi.org/10.1134/S0031918X22090113

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