Creep behavior of an AlTiVNbZr0.25 high entropy alloy at 1073 K

Kral P, Blum W, Dvorak J, Yurchenko N, Stepanov N, Zherebtsov S, Kuncicka L, Kvapilova M, Sklenicka V (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing Elsevier

Book Volume: 783

Article Number: 139291

DOI: 10.1016/j.msea.2020.139291

Abstract

The deformation behavior of an AlTiVNbZr0.25 high entropy alloy at 1073 K was investigated in creep in protective argon atmosphere at stresses of 100–560 MPa with and without changes. In the initial condition after annealing at 1473 K for 24 h the alloys was composed of B2 matrix phase and coarse Zr5Al3-type particles. During creep a limited amount of new Nb2Al-type sigma phase precipitates at the Zr5Al3/B2 hetero-phase interface and a quasi-stationary dislocation density of the expected order of magnitude are developed. The quasi-stationary creep rate obeys a three-power law and the transients after stress changes are inverted. This is interpreted in terms of the class A creep behavior with viscous glide due to cloud drag.

Authors with CRIS profile

Wolfgang Blum Technische Fakultät

Involved external institutions

Belgorod National Research University (BelGU) / Белгородский государственный национальный исследовательский университет (НИУ БелГУ) RU Russian Federation (RU) Academy of Sciences of the Czech Republic (ASCR) / Akademie věd České republiky (AVČR) CZ Czech Republic (CZ)

How to cite

APA:

Kral, P., Blum, W., Dvorak, J., Yurchenko, N., Stepanov, N., Zherebtsov, S.,... Sklenicka, V. (2020). Creep behavior of an AlTiVNbZr0.25 high entropy alloy at 1073 K. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 783. https://doi.org/10.1016/j.msea.2020.139291

MLA:

Kral, Petr, et al. "Creep behavior of an AlTiVNbZr0.25 high entropy alloy at 1073 K." Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 783 (2020).

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