Plastische Verformung von Eisen-II-Oxid

Reppich B (2022)

Publication Type: Authored book

Publication year: 2022

Publisher: De Gruyter

ISBN: 9783112502105

Abstract

An investigation is made of compressive deformation in monocrystalline and polycrystalline ferrous oxide Fe1-xO, witha concentration of cation vacancies 0.05 ≦ x ≦ 0.11, in the temperature range 650 °C≦T ≦ 1300 °C. Stationary creep as well as flow at constant strain rate can be expressed as ε = C (1 + b x)σm exp (- U/kT) with m = 4 and U = = (3.54 ± 0.21) eV = (81.5 ± 4.8) kcal/mol. Single crystals are found to be softer and ductiler than polycrystalline samples. The plasticity of Fe1-xO increases with increasing concentration of iron vacancies. The observed yield point is thought to be due to dislocation loops, resulting from Fe304 precipitates. The results are interpreted in terms of stress-induced climb of edge dislocations.

Involved external institutions

Georg-August-Universität Göttingen DE Germany (DE)

How to cite

APA:

Reppich, B. (2022). Plastische Verformung von Eisen-II-Oxid. De Gruyter.

MLA:

Reppich, B.. Plastische Verformung von Eisen-II-Oxid. De Gruyter, 2022.

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