The effect of Al addition on solid solution strengthening in CoCrFeMnNi: Experiment and modelling

被引：41
作者：
Kumar, Jitesh [1 ]
Linda, Albert [1 ]
Sadhasivam, M. [2 ]
Pradeep, K. G. [2 ]
Gurao, N. P. [1 ]
Biswas, Krishanu [1 ]
机构：
[1] Indian Inst Technol, Dept Mat Sci & Engn, Kanpur 208016, India
[2] Indian Inst Technol Madras, Dept Met & Mat Engn, Correlat Microscopy Lab, Chennai 600036, India
来源：
ACTA MATERIALIA | 2022年 / 238卷
关键词：
High entropy alloys; Al addition; Lattice distortion; Solid solution strengthening; Yield strength; Constitutive modeling; HIGH-ENTROPY ALLOYS; MECHANICAL-PROPERTIES; LATTICE DISTORTION; FCC; STABILITY; BEHAVIOR; ELEMENT; STRAIN;
D O I：
10.1016/j.actamat.2022.118208
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of aluminum addition to the Cantor alloy in the composition range of 0.25-5 atomic percent towards solid solution strengthening of supposedly single-phase HEA was investigated using experiments and first principle simulation-guided constitutive modeling. The continuous increase in yield and ten-sile strength without significant change in ductility is observed for the alloys with increasing aluminum content. The constitutive modeling of the strengthening has been performed using traditional as well as recently developed models for solid solution strengthening. It indicated a significant contribution (50% increases from Cantor alloy to Cantor alloy containing 5 atom % Al) of solid solution strengthening due to the addition of Al having a relatively larger size ( 12 %) than the size of elements in the Cantor alloy, causing severe local lattice distortion. The experimental yield strength could be best explained based on the large apparent distortion volume of the Al atom acting as a stronger barrier to dislocation motion based on the Varvenne model by incorporating the lattice distortion. First-principles simulations indicate that local and global lattice distortion contributes to an increase in the strength by strong pinning of dislocations by aluminum atom leading to high strength. (c) 2022 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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页数：14
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共 62 条
[1]   Understanding the deformation behavior of CoCuFeMnNi high entropy alloy by investigating mechanical properties of binary ternary and quaternary alloy subsets [J].
Agarwal, Rani ;
Sonkusare, Reshma ;
Jha, Saumya R. ;
Gurao, N. P. ;
Biswas, Krishanu ;
Nayan, Niraj .
MATERIALS & DESIGN, 2018, 157 :539-550
[2]   Strengthening mechanisms in high entropy alloys: Fundamental issues [J].
Basu, Indranil ;
De Hosson, Jeff Th M. .
SCRIPTA MATERIALIA, 2020, 187 :148-156
[3]   High Entropy Alloys: Ready to Set Sail? [J].
Basu, Indranil ;
De Hosson, Jeffh. M. .
METALS, 2020, 10 (02)
[4]   FINITE ELASTIC STRAIN OF CUBIC CRYSTALS [J].
BIRCH, F .
PHYSICAL REVIEW, 1947, 71 (11) :809-824
[5]   High entropy alloys: Key issues under passionate debate [J].
Biswas, Krishanu ;
Yeh, Jien-Wei ;
Bhattacharjee, Pinaki P. ;
DeHosson, Jeff Th. M. .
SCRIPTA MATERIALIA, 2020, 188 :54-58
[6]   PROJECTOR AUGMENTED-WAVE METHOD [J].
BLOCHL, PE .
PHYSICAL REVIEW B, 1994, 50 (24) :17953-17979
[7]   Microstructural development in equiatomic multicomponent alloys [J].
Cantor, B ;
Chang, ITH ;
Knight, P ;
Vincent, AJB .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 375 :213-218
[8]   Design of Nickel-Cobalt-Ruthenium multi-principal element alloys [J].
Charpagne, M. A. ;
Vamsi, K. V. ;
Eggeler, Y. M. ;
Murray, S. P. ;
Frey, C. ;
Kolli, S. K. ;
Pollock, T. M. .
ACTA MATERIALIA, 2020, 194 :224-235
[9]   Pitting corrosion of the high-entropy alloy Co1.5CrFeNi1.5Ti0.5Mo0.1 in chloride-containing sulphate solutions [J].
Chou, Y. L. ;
Wang, Y. C. ;
Yeh, J. W. ;
Shih, H. C. .
CORROSION SCIENCE, 2010, 52 (10) :3481-3491
[10]   Microstructure and wear behavior of AlxCo1.5CrFeNi1.5Tiy high-entropy alloys [J].
Chuang, Ming-Hao ;
Tsai, Ming-Hung ;
Wang, Woei-Ren ;
Lin, Su-Jien ;
Yeh, Jien-Wei .
ACTA MATERIALIA, 2011, 59 (16) :6308-6317
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