Ultrahigh hardness and biocompatibility of high-entropy alloy TiAlFeCoNi processed by high-pressure torsion.
Biomaterials
CALPHAD (calculation of phase diagram) method
High-entropy alloys (HEAs)
Lattice softening
Phase transformation
Severe plastic deformation (SPD)
Journal
Materials science & engineering. C, Materials for biological applications
ISSN: 1873-0191
Titre abrégé: Mater Sci Eng C Mater Biol Appl
Pays: Netherlands
ID NLM: 101484109
Informations de publication
Date de publication:
Jul 2020
Jul 2020
Historique:
received:
10
01
2020
revised:
28
03
2020
accepted:
28
03
2020
entrez:
16
5
2020
pubmed:
16
5
2020
medline:
4
3
2021
Statut:
ppublish
Résumé
Despite significant studies on mechanical properties of high-entropy alloys (HEAs), there have been limited attempts to examine the biocompatibility of these alloys. In this study, a lattice-softened high-entropy alloy TiAlFeCoNi with ultrahigh hardness (examined by Vickers method), low elastic modulus (examined by nanoindentation) and superior activity for cell proliferation/viability/cytotoxicity (examined by MTT assay) was developed by employing imperial data and thermodynamic calculations. The designated alloy after casting was processed further by high-pressure torsion (HPT) to improve its hardness via the introduction of nanograins, dislocations and order-disorder transformation. The TiAlFeCoNi alloy with the L2
Identifiants
pubmed: 32409062
pii: S0928-4931(20)30141-7
doi: 10.1016/j.msec.2020.110908
pii:
doi:
Substances chimiques
Alloys
0
Biocompatible Materials
0
Cobalt
3G0H8C9362
Nickel
7OV03QG267
Aluminum
CPD4NFA903
Titanium
D1JT611TNE
Iron
E1UOL152H7
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
110908Informations de copyright
Copyright © 2020 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.