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Published in: Journal of Materials Science 27/2022

06-07-2022 | Metals & corrosion

Effect of chromium content on precipitation in Cu–Cr–Zr alloys

Authors: Anna Bodyakova, Roman Mishnev, Andrey Belyakov, Rustam Kaibyshev

Published in: Journal of Materials Science | Issue 27/2022

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Abstract

The phase content and the strengthening of two copper alloys, 0.1Cr–0.1Zr and 0.9Cr–0.1Zr, subjected to aging treatments were studied. The size of second phase particles and the strengthening mechanism depended remarkably on the chromium content. The strengthening of the 0.9Cr–0.1Zr alloy in the peak aged conditions was mainly attributed to the uniform dispersion of tiny shearable Cr-rich particles with a size of about 3–4.5 nm and the Nishiyama–Wassermann orientation relationship. In contrast, the microstructure of the peak aged conditions of the 0.1Cr–0.1Zr alloy was characterized by the dispersion of relatively large Cr particles with a size of about 8–10 nm, which resulted in the strengthening accordingly Orowan mechanism. The reasons for the difference in the decomposition of the supersaturated solid solution and the morphology of particles are discussed.

Graphical abstract

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Metadata
Title
Effect of chromium content on precipitation in Cu–Cr–Zr alloys
Authors
Anna Bodyakova
Roman Mishnev
Andrey Belyakov
Rustam Kaibyshev
Publication date
06-07-2022
Publisher
Springer US
Published in
Journal of Materials Science / Issue 27/2022
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-022-07454-8

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