Monocrystalline elastic constants and their temperature dependences for equi-atomic Cr-Mn-Fe-Co-Ni high-entropy alloy with the face-centered cubic structure

被引：25

作者：

Teramoto, Takeshi ^{[1
]}

Yamada, Kazuki ^{[1
]}

Ito, Ryo ^{[1
]}

Tanaka, Katsushi ^{[1
]}

机构：

[1] Kobe Univ, Dept Mech Engn, Nada Ku, 1-1 Rokkodai Cho, Kobe, Hyogo 6578501, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 777卷

关键词：

Transition metal alloys and compounds; Elasticity; Ultrasonics; STACKING-FAULT ENERGIES; MECHANICAL-PROPERTIES; MICROSTRUCTURE; CRMNFECONI; STABILITY; MODULI; EVOLUTION; CRYSTALS; STRESS;

D O I：

10.1016/j.jallcom.2018.11.052

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The temperature dependences of monocrystalline elastic constants of Cr-Mn-Fe-Co-Ni high entropy alloy with the face-centered cubic (fcc) structure have been experimentally determined using resonance ultrasound spectroscopy from liquid helium temperature to 1173 K. The values of three independent monocrystalline and estimated polycrystalline elastic constants are fitted using the Varshni equation so that one can obtain the values at any temperatures. The elastic anisotropy of the alloy is characterized by a relatively large value of anisotropy factor of shear modulus, which is closely related to a small value of stacking fault energy of this alloy. The monocrystalline elastic constants also indicate that a relatively strong directional interatomic bonding exists in the present high-entropy alloy. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：1313 / 1318

页数：6

共 49 条

[31] Precipitation in the equiatomic high-entropy alloy CrMnFeCoNi
Pickering, E. J.
Munoz-Moreno, R.
Stone, H. J.
Jones, N. G.
[J]. SCRIPTA MATERIALIA, 2016, 113 : 106 - 109
[32] RELATIONS BETWEEN THE ELASTIC MODULI AND THE PLASTIC PROPERTIES OF POLYCRYSTALLINE PURE METALS
PUGH, SF
[J]. PHILOSOPHICAL MAGAZINE, 1954, 45 (367): : 823 - 843
[33] Density functional theory for calculation of elastic properties of orthorhombic crystals:: Application to TiSi2
Ravindran, P
Fast, L
Korzhavyi, PA
Johansson, B
Wills, J
Eriksson, O
[J]. JOURNAL OF APPLIED PHYSICS, 1998, 84 (09) : 4891 - 4904
[34] CALCULATED STACKING-FAULT ENERGIES OF ELEMENTAL METALS
ROSENGAARD, NM
SKRIVER, HL
[J]. PHYSICAL REVIEW B, 1993, 47 (19): : 12865 - 12873
[35] Mechanical properties, microstructure and thermal stability of a nanocrystalline CoCrFeMnNi high-entropy alloy after severe plastic deformation
Schuh, B.
Mendez-Martin, F.
Voelker, B.
George, E. P.
Clemens, H.
Pippan, R.
Hohenwarter, A.
[J]. ACTA MATERIALIA, 2015, 96 : 258 - 268
[36] Microstructure and elevated temperature properties of a refractory TaNbHfZrTi alloy
Senkov, O. N.
Scott, J. M.
Senkova, S. V.
Meisenkothen, F.
Miracle, D. B.
Woodward, C. F.
[J]. JOURNAL OF MATERIALS SCIENCE, 2012, 47 (09) : 4062 - 4074
[37] Mechanical properties of Nb25Mo25Ta25W25 and V20Nb20Mo20Ta20W20 refractory high entropy alloys
Senkov, O. N.
Wilks, G. B.
Scott, J. M.
Miracle, D. B.
[J]. INTERMETALLICS, 2011, 19 (05) : 698 - 706
[38] Simmons G., 1971, Single crystal elastic constants and calculated aggregate properties: A handbook
[39] High-Entropy Alloys with a Hexagonal Close-Packed Structure Designed by Equi-Atomic Alloy Strategy and Binary Phase Diagrams
Takeuchi, Akira
Amiya, Kenji
Wada, Takeshi
Yubuta, Kunio
Zhang, Wei
[J]. JOM, 2014, 66 (10) : 1984 - 1992
[40] Tanaka K, 1999, HIGH TEMP MAT PR-ISR, V18, P323

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