Microstructure and strengthening mechanisms of CuCrZr alloy by two-step thermomechanical treatment

被引：34
作者：
Huang, Shiha [1 ]
Huang, Wei [2 ]
Xie, Weibin [1 ]
Chen, Huiming [1 ]
Wang, Hang [1 ]
Yang, Bin [1 ]
机构：
[1] Jiangxi Univ Sci & Technol, Fac Mat Met & Chem, Ganzhou 341000, Jiangxi, Peoples R China
[2] China Acad Ordance Sci, Ningbo Brance, Ningbo 315000, Zhejiang, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2020年 / 31卷 / 20期
关键词：
HIGH ELECTRICAL-CONDUCTIVITY; HIGH-ENTROPY ALLOY; CU-CR; GRAIN-REFINEMENT; ZR; PRECIPITATION; DEFORMATION; BEHAVIOR; RESISTANCE;
D O I：
10.1007/s10854-020-04333-3
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The high strength obtained in Cu-Cr alloys is mainly attributed to the precipitation strengthening, dislocation strengthening, and grain-boundary strengthening. The precipitate size, dislocation density, and grain size are related to thermomechanical treatment. The strength of Cu-Cr alloys can be controlled by the thermomechanical treatment process. In this study, the microstructure and strengthening mechanisms of Cu-0.8Cr-0.1Zr (wt%) alloy after one-step and two-step thermomechanical treatment were studied. The results showed that after the following thermomechanical treatments, solution treated at 950 degrees C for 60 min, thickness reduction at first cold rolled for 60%, annealed at 450 degrees C for 180 min, and then 30% thickness reduction in secondary cold rolling, the microhardness, tensile strength, and conductivity reach 215 HV, 623 MPa, and 74.5% IACS, respectively. The main difference of strength between one-step and two-step thermomechanical treatment in the Cu-0.8Cr-0.1Zr alloy is due to the difference of dislocation strengthening effect. The dislocation strengthening achieved in two-step thermomechanical treatment (175.6 MPa) is 95 MPa greater than that of one-step thermomechanical treatment (80.6 MPa).
引用
收藏
页码：17798 / 17809
页数：12
相关论文
共 34 条
[1]   Contribution of Zr to strength and grain refinement in Cu-Cr-Zr alloy [J].
Chen, Jinshui ;
Wang, Junfeng ;
Xiao, Xiangpeng ;
Wang, Hang ;
Chen, Huiming ;
Yang, Bin .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 756 :464-473
[2]   The effect of initial aging treatment on the microstructure and mechanical properties of cryorolled 6016 Al alloy [J].
Chen, X. P. ;
Mei, L. ;
Chen, D. ;
Bao, Z. L. ;
Liu, Q. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 667 :311-316
[3]   Controllable fabrication of a carbide-containing FeCoCrNiMn high-entropy alloy: microstructure and mechanical properties [J].
Cheng, H. ;
Wang, H. Y. ;
Xie, Y. C. ;
Tang, Q. H. ;
Dai, P. Q. .
MATERIALS SCIENCE AND TECHNOLOGY, 2017, 33 (17) :2032-2039
[4]   Strengthening in rapidly solidified age hardened Cu-Cr and Cu-Cr-Zr alloys [J].
Correia, JB ;
Davies, HA ;
Sellars, CM .
ACTA MATERIALIA, 1997, 45 (01) :177-190
[5]   Non-destructive pulsed field CuAg-solenoids [J].
Freudenberger, J. ;
Lyubimova, J. ;
Gaganov, A. ;
Witte, H. ;
Hickman, A. L. ;
Jones, H. ;
Nganbe, M. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (7-8) :2004-2013
[6]   Precipitation hardening in metals [J].
Gladman, T .
MATERIALS SCIENCE AND TECHNOLOGY, 1999, 15 (01) :30-36
[7]   Microstructure and properties of Cu-Cr-Nb alloy with high strength, high electrical conductivity and good softening resistance performance at elevated temperature [J].
Guo, Xiaoli ;
Xiao, Zhu ;
Qiu, Wenting ;
Li, Zhou ;
Zhao, Ziqian ;
Wang, Xu ;
Jiang, Yanbin .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 749 :281-290
[8]  
Guoliang Xie, 2015, Materials Science Forum, V817, P577, DOI 10.4028/www.scientific.net/MSF.817.577
[9]   A precipitation-hardened high-entropy alloy with outstanding tensile properties [J].
He, J. Y. ;
Wang, H. ;
Huang, H. L. ;
Xu, X. D. ;
Chen, M. W. ;
Wu, Y. ;
Liu, X. J. ;
Nieh, T. G. ;
An, K. ;
Lu, Z. P. .
ACTA MATERIALIA, 2016, 102 :187-196
[10]   Microstructure and strength of nickel at large strains [J].
Hughes, DA ;
Hansen, N .
ACTA MATERIALIA, 2000, 48 (11) :2985-3004
1234