TY - JOUR
T1 - Effect of iron content on the structure and mechanical properties of Al 25 Ti 25 Ni 25 Cu 25 and (AlTi) 60-x Ni 20 Cu 20 Fe x (x=15, 20) high-entropy alloys
AU - Fazakas,
AU - Zadorozhnyy, V.
AU - Louzguine-Luzgin, D. V.
N1 - Funding Information:
E. Fazakas express her gratitude to the Matsumae International Foundation and WPI-Advanced Institute for Materials Research, Tohoku University making possible a 6 month stay in Sendai. This work was supported by World Premier International Research Center Initiative (WPI), MEXT, Japan and by the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST «MISiS» (№ К 2-2014-013 ) and by Hungarian OTKA grants 84078 and 109570 .
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2015/12/15
Y1 - 2015/12/15
N2 - In this work, we investigated the microstructure and mechanical properties of Al 25 Ti 25 Ni 25 C u25 Al 22.5 Ti 22.5 Ni 20 Cu 20 Fe 15 and Al 20 Ti 20 Ni 20 Cu 20 Fe 20 high entropy alloys, produced by arc melting and casting in an inert atmosphere. The structure of these alloys was studied by X-ray diffractometry and scanning electron microscopy. The as-cast alloys were heat treated at 773, 973 and 1173 K for 1800 s to investigate the effects of aging on the plasticity, hardness and elastic properties. Compared to the conventional high-entropy alloys the Al 25 Ti 25 Ni 25 Cu 25 , Al 22.5 Ti 22.5 Ni 20 Cu 20 Fe 15 and Al 20 Ti 20 Ni 20 Cu 20 Fe 20 alloys are relatively hard and ductile. Being heat treated at 973 K the Al 22.5 Ti 22.5 Ni 20 Cu 20 Fe 15 alloy shows considerably high strength and relatively homogeneous deformation under compression. The plasticity, hardness and elastic properties of the studied alloys depend on the fraction and intrinsic properties of the constituent phases. Significant hardening effect by the annealing is found.
AB - In this work, we investigated the microstructure and mechanical properties of Al 25 Ti 25 Ni 25 C u25 Al 22.5 Ti 22.5 Ni 20 Cu 20 Fe 15 and Al 20 Ti 20 Ni 20 Cu 20 Fe 20 high entropy alloys, produced by arc melting and casting in an inert atmosphere. The structure of these alloys was studied by X-ray diffractometry and scanning electron microscopy. The as-cast alloys were heat treated at 773, 973 and 1173 K for 1800 s to investigate the effects of aging on the plasticity, hardness and elastic properties. Compared to the conventional high-entropy alloys the Al 25 Ti 25 Ni 25 Cu 25 , Al 22.5 Ti 22.5 Ni 20 Cu 20 Fe 15 and Al 20 Ti 20 Ni 20 Cu 20 Fe 20 alloys are relatively hard and ductile. Being heat treated at 973 K the Al 22.5 Ti 22.5 Ni 20 Cu 20 Fe 15 alloy shows considerably high strength and relatively homogeneous deformation under compression. The plasticity, hardness and elastic properties of the studied alloys depend on the fraction and intrinsic properties of the constituent phases. Significant hardening effect by the annealing is found.
KW - Casting
KW - Mechanical properties
KW - Multicomponent alloys
KW - Scanning elelctron microscopy
KW - X-ray diffraction
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U2 - 10.1016/j.apsusc.2015.07.207
DO - 10.1016/j.apsusc.2015.07.207
M3 - Article
AN - SCOPUS:84938630069
SN - 0169-4332
VL - 358
SP - 549
EP - 555
JO - Applied Surface Science
JF - Applied Surface Science
ER -