Compositional complexity dependence of lattice distortion in FeNiCoCrMn high entropy alloy system
Thirathipviwat P, Sato S, Song G, Bednarcik J, Nielsch K, Han J (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 823
Article Number: 141775
DOI: 10.1016/j.msea.2021.141775
Abstract
Based on the hypothesis of lattice distortion, compositional complexity of high entropy alloys (HEAs) induces severe lattice distortion. Recent studies on the experimental and theoretical approaches to lattice distortion have been made to evaluate this hypothesis. However, the understanding of this effect is not complete due to their highly complex compositions and limited direct evidence. This work was designed to systematically study the effect of compositional complexity from unary to quinary compositions (Ni, FeNi, FeNiCo, FeNiCoCr and FeNiCoCrMn). To focus on the effect of interactions between constituent elements, the microstructural effect was minimized by controlling similar microstructural features such as grain size and residual strain. The micro lattice strain was evaluated on X-ray line profile analysis using the Williamson-Hall method and the local lattice strain was assessed by using pair distribution function (PDF) method through the total scattering data using the synchrotron X-ray diffraction measurement. Analysis on both the micro and local scales indicates that severe lattice distortion is not evident in FeNiCoCrMn HEA. Lattice strain and solid solution hardening are comparable between FeNiCoCrMn HEA and its sub-alloys. The high compositional complexity of FeNiCoCrMn HEA does not lead to a strong effect on lattice strain and solid solution hardening.
Involved external institutions
Ibaraki University / 茨城大学
Japan (JP)
Kongju National University
Korea, Republic of (KR)
Pavol Jozef Šafárik University in Kosice / Univerzita Pavla Jozefa Šafárika v Košiciach
Slovakia (SK)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Japan (JP)
Kongju National University
Korea, Republic of (KR)
Pavol Jozef Šafárik University in Kosice / Univerzita Pavla Jozefa Šafárika v Košiciach
Slovakia (SK)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
How to cite
APA:
Thirathipviwat, P., Sato, S., Song, G., Bednarcik, J., Nielsch, K., & Han, J. (2021). Compositional complexity dependence of lattice distortion in FeNiCoCrMn high entropy alloy system. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 823. https://doi.org/10.1016/j.msea.2021.141775
MLA:
Thirathipviwat, P., et al. "Compositional complexity dependence of lattice distortion in FeNiCoCrMn high entropy alloy system." Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 823 (2021).
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