LIN, Chun-Lin; LEE, Jhuo-Lun; KUO, Shih-Ming; LI, Ming-Yen; GAN, Lu; MURAKAMI, Hideyuki; MITANI, Seiji; GORSSE, Stéphane; YEH, An-Chou

doi:10.1016/j.matchemphys.2021.124907

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

LIN, Chun-Lin
Department of Materials Science and Engineering
National Institute for Materials Science [NIMS]

LEE, Jhuo-Lun
Department of Materials Science and Engineering
High Entropy Materials Center

KUO, Shih-Ming
China Steel Corporation

Langue

Article de revue

Ce document a été publié dans

Materials Chemistry and Physics. 2021-10, vol. 271, p. 124907 (9 p.)

Elsevier

Résumé en anglais

This work investigates the thermal expansion behaviors of Fe30Co30Ni30Cr10-xMnx High Entropy Alloys (HEAs) (x = 0, 5, 10 at.%) from 400 K to 1200 K. Interestingly, comparing to that of Cantor alloy, a decrease in Cr and Mn in Co–Cr–Fe–Mn–Ni system could significantly decrease the thermal expansion coefficient by 45.2%; Fe30Co30Ni30Cr10-xMnx (x = 0, 5, 10) also showed an abrupt change in thermal expansion behaviors similar to that of Invar alloys. Experimental and theoretical analysis suggest the abrupt change in thermal expansion behaviors of these HEAs were associated with the transition from ferromagnetism to paramagnetism, and these alloys appear to exhibit the dimensional stability of the Invar effect. Since the Invar effect is related to ferromagnetic properties, the amount of Cr and Mn in the HEAs would influence the suppression of thermal expansion due to different intensity of anti-ferromagnetic coupling effect. This research contributes to the understanding of the thermal expansion behaviors of Co–Cr–Fe–Mn–Ni high entropy alloys and the effects of antiferromagnetic elements< Réduire

Métadonnées

Licence d’utilisation du document

Investigation on the thermal expansion behavior of FeCoNi and Fe30Co30Ni30Cr10-xMnx high entropy alloys

Langue

Ce document a été publié dans

Résumé en anglais

DOI

Origine

Unités de recherche