Recrystallization kinetics and mechanical properties of cold-rolled and annealed CoCrFeNi multi-principal element alloy

被引:1
作者
Werner, K. V. [1 ]
Gholizadeh, R. [2 ]
Wu, G. L. [3 ]
Winther, G. [1 ]
Tsuji, N. [2 ]
Mishin, O. V. [1 ]
机构
[1] Tech Univ Denmark, Dept Civil & Mech Engn, DK-2800 Lyngby, Denmark
[2] Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Kyoto 6068501, Japan
[3] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
关键词
Medium-entropy alloys; Multi-principal element alloys; Cold rolling; Deformation heterogeneities; Recrystallization; Mechanical properties; STACKING-FAULT ENERGY; HIGH-ENTROPY ALLOYS; GRAIN-SIZE; DEFORMATION; TEXTURE; MICROSTRUCTURE;
D O I
10.1016/j.matchar.2024.114475
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The microstructure and mechanical properties have been investigated in a CoCrFeNi alloy cold-rolled to 80 % thickness reduction and subsequently annealed at 600 degrees C. It is observed that the as-rolled microstructure comprises extended regions of different dominant crystallographic orientations along with layers of mixed orientations. Shear bands are also present in this microstructure, with the susceptibility to shear banding varying significantly from region to region. Shear bands are most pronounced in extended regions containing narrow deformation twins, and are a crucial source of recrystallization nuclei. Analysis of the recrystallization kinetics indicates that the Avrami exponent is similar to 1.6 for the first 30 min at 600 degrees C and that it decreases during further annealing. Tensile test data provide evidence that the sample annealed for 8 min, with a recrystallized fraction (f(RX)) of 13 % and an average recrystallized grain size of 0.8 mu m, does not show any significant improvement in ductility compared to that in the as-rolled condition. However, the ductility is considerably improved in the sample annealed for 15 min, where f(RX) is 43 % and the average recrystallized grain size is 1.1 mu m. This sample demonstrates a yield strength of 850 MPa and a total elongation to failure of 25 %. The data obtained in this work and in previous publications on partially recrystallized CoCrFeNi indicate that for samples annealed after 80-85 % deformation optimized combinations of strength and ductility are obtained when the recrystallized fraction is in the range 30 % < f(RX) <= 50 %.
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页数:10
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共 36 条
[1]   Static recrystallization and grain growth behaviour of Al0.3CoCrFeNi high entropy alloy [J].
Annasamy, Murugesan ;
Haghdadi, Nima ;
Taylor, Adam ;
Hodgson, Peter ;
Fabijanic, Daniel .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 754 :282-294
[2]   Multicomponent high-entropy Cantor alloys [J].
Cantor, B. .
PROGRESS IN MATERIALS SCIENCE, 2021, 120
[3]   Influence of heat treatment on the texture, microstructure and tensile deformation behaviours of cold rolled FeCoNiCr sheets [J].
Chen, Gang ;
Zhu, Qiang ;
Chen, ShuRui ;
Yao, ShengJie ;
Wang, Han ;
Zhao, Lin ;
Zhang, Peng ;
Wang, ChuanJie .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2022, 848
[4]   OVERVIEW .82. DEVELOPMENT OF TEXTURE AND MICROSTRUCTURE DURING COLD-ROLLING AND ANNEALING OF FCC ALLOYS - EXAMPLE OF AN AUSTENITIC STAINLESS-STEEL [J].
DONADILLE, C ;
VALLE, R ;
DERVIN, P ;
PENELLE, R .
ACTA METALLURGICA, 1989, 37 (06) :1547-1571
[5]   Influence of grain size and stacking-fault energy on deformation twinning in fcc metals [J].
El-Danaf, E ;
Kalidindi, SR ;
Doherty, RD .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (05) :1223-1233
[6]   In-situ observations of static recrystallization and texture formation in a cold-rolled CoCrFeMnNi high entropy alloy [J].
Guo, Baoqi ;
Ray, Ranjit K. ;
Yoshida, Shuhei ;
Bai, Yu ;
Tsuji, Nobuhiro .
SCRIPTA MATERIALIA, 2022, 215
[7]   Enhancing cryogenic tensile properties of CrCoNi medium entropy alloy via heterogeneous microstructure design [J].
Guo, F. J. ;
Song, L. Y. ;
He, Q. ;
Yang, B. ;
Zheng, X. H. ;
Wang, Q. Y. ;
Huang, C. X. .
MATERIALS CHARACTERIZATION, 2023, 201
[8]   Gradient microstructure, recrystallization and mechanical properties of copper processed by high pressure surface rolling [J].
Guo, J. ;
He, Q. Y. ;
Mei, Q. S. ;
Huang, X. ;
Wu, G. L. ;
Mishin, O., V .
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2022, 126 :182-190
[9]   Revealing the inhomogeneous nature of microstructure and texture evolution in the cold-rolled CoCrFeMnNi alloy during static recrystallization [J].
Gupta, Aman ;
Kaushik, Lalit ;
Pawar, Saurabh ;
Kang, Joo-Hee ;
Choi, Shi-Hoon ;
Singh, Jaiveer .
JOURNAL OF ALLOYS AND COMPOUNDS, 2024, 995
[10]   Influence of deformation and annealing twinning on the microstructure and texture evolution of face-centered cubic high-entropy alloys [J].
Haase, Christian ;
Barrales-Mora, Luis A. .
ACTA MATERIALIA, 2018, 150 :88-103