Version 1
: Received: 26 September 2024 / Approved: 27 September 2024 / Online: 27 September 2024 (16:49:02 CEST)
How to cite:
Berthod, P.; Aranda, L. Oxidation Behavior and Creep Resistance at 1100°C of Cast MC-Strengthened CoNiFeMnCr HEAs. Preprints2024, 2024092250. https://doi.org/10.20944/preprints202409.2250.v1
Berthod, P.; Aranda, L. Oxidation Behavior and Creep Resistance at 1100°C of Cast MC-Strengthened CoNiFeMnCr HEAs. Preprints 2024, 2024092250. https://doi.org/10.20944/preprints202409.2250.v1
Berthod, P.; Aranda, L. Oxidation Behavior and Creep Resistance at 1100°C of Cast MC-Strengthened CoNiFeMnCr HEAs. Preprints2024, 2024092250. https://doi.org/10.20944/preprints202409.2250.v1
APA Style
Berthod, P., & Aranda, L. (2024). Oxidation Behavior and Creep Resistance at 1100°C of Cast MC-Strengthened CoNiFeMnCr HEAs. Preprints. https://doi.org/10.20944/preprints202409.2250.v1
Chicago/Turabian Style
Berthod, P. and Lionel Aranda. 2024 "Oxidation Behavior and Creep Resistance at 1100°C of Cast MC-Strengthened CoNiFeMnCr HEAs" Preprints. https://doi.org/10.20944/preprints202409.2250.v1
Abstract
To explore cast HEAs reinforcement by MC carbides three equimolar CoNiFeCrC alloys without or with Carbon and either hafnium or tantalum were investigated. Their microstructures were specified and tests at 1100°C in oxidation by air and flexural creep tests were carried out. The HEAbase was single–phased. The HEAhfc and HEAtac contained eutectic script HfC and TaC carbides respectively, in the interdendritic spaces. After oxidation for 50h at 1100°C all alloys were covered by a (Cr,Mn)2O3 scale with various proportions in Cr and Mn. HfO2 or CrTaO4 also formed. The subsurface was depleted in Cr and especially in Mn. The HEAbase alloy deformed quickly. The MC carbides greatly improved the creep resistance, and divided deformation by five to ten times.
Keywords
HEA alloys; Equimolar CoNiFeMnCr; HfC; TaC; High temperature; Oxidation; Creep
Subject
Chemistry and Materials Science, Metals, Alloys and Metallurgy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
