Thermal tensile deformation behavior of Cu-Cr-Zr alloy with different Cr content

doi:10.13251/j.issn.0254-6051.2021.09.005

Abstract

Abstract: High-temperature thermal tensile experiments were carried out by using Gleeble-3810 thermal simulation tester to study the flow behavior of Cu-Cr-Zr alloys with different Cr contents at deformation temperature of 350-500 ℃ and strain rate of 0.01-1 s^-1. The results show that with the increase of strain rate, Cr element content and decrease of deformation temperature, the flow stress of Cu-Cr-Zr alloy increases. The analysis of the fracture structure suggests that the strain rate, deformation temperature, and Cr content can change the properties of the material by affecting the formation and morphological changes of dimples and other structures during the thermal tensile process. The increase of Cr content triggers solid solution strengthening and aging precipitation strengthening, which increases the thermal tensile peak stress of the material. Using the experimental results, an improved Johnson-Cook constitutive model is established, and it is found that the calculated results by the model are in good agreement with the experimental data.

Key words: Cu-Cr-Zr alloy, Cr content, thermal deformation behavior, Johnson-Cook model

CLC Number:

TG146.1

Liao Xuefeng, Zhang Heng, He Xueqing, Huang Yuanchun, Li Ming. Thermal tensile deformation behavior of Cu-Cr-Zr alloy with different Cr content[J]. Heat Treatment of Metals, 2021, 46(9): 28-35.

References

[1]Wang X Y, Liu X F, Xie J. Mechanism of surface texture evolution in pure copper strips subjected to double rolling[J]. Progress in Natural Science: Materials International, 2014, 24(1): 75-82.
[2]Fu Y B, Cui J, Cao Z Q. Cracks of Cu-Cr-Zr alloy bars under planetary rolling[J]. Rare Metal Materials and Engineering, 2015, 44(3): 567-570.
[3]Chen J S, Wang J F, Xiao X P, et al. Contribution of Zr to strength and grain refinement in Cu Cr Zr alloy[J]. Materials Science and Engineering A, 2019, 756: 464-473.
[4]Purcek G, Yanar H, Demirtas M, et al. Optimization of strength, ductility and electrical conductivity of Cu-Cr-Zr alloy by combining multi-route ECAP and aging[J]. Materials Science and Engineering, 2016, 649: 114-122.
[5]刘瑞蕊, 周海涛, 周啸, 等. 高强高导铜合金的研究现状及发展趋势[J]. 材料导报, 2012, 26(19): 100-105.
Liu Ruixin, Zhou Haitao, Zhou Xiao, et al. Present situation and future prospect of high-strength and high-conductivity Cu alloy[J]. Materials Reports, 2012, 26(19): 100-105.
[6]Khomskaya I V, Zeldovich V I, Frolova N Y, et al. Investigation of Cu5Zr particles precipitation in Cu-Zr and Cu-Cr-Zr alloys subjected to quenching and high strain rate deformation[J]. Materials Letters, 2019, 9(4): 400-404.
[7]Chen X H, Zhou H L, Zhang T, et al. Mechanism of interaction between the Cu/Cr interface and its chemical mixing on tensile strength and electrical conductivity of a Cu-Cr-Zr alloy[J]. Materials & Design, 2019, 180: 107976.
[8]陈金水, 王俊峰, 朱明彪, 等. Cu-Cr-Zr系合金中Zr含量对初生相的影响[J]. 金属热处理, 2018, 43(7): 20-27.
Chen Jinshui, Wang Junfeng, Zhu Mingbiao, et al. Effect of Zr content on primary phase in Cu-Cr-Zr alloy[J]. Heat Treatment of Metals, 2018, 43(7): 20-27.
[9]Sarkeeva E A, Sitdikov V D, Raab G I, et al. The effect of Cr and Zr content on the microstructure and properties of the Cu-Cr-Zr system alloy[J]. IOP Conference Series Materials Science and Engineering, 2018, 447: 012065.
[10]龚留奎, 袁继慧, 罗富鑫, 等. 合金化对Cu-Cr-Zr-Ti合金组织与性能的影响[J]. 金属热处理, 2018, 43(8): 7-12.
Gong Liukui, Yuan Jihui, Luo Fuxin, et al. Effect of alloying on microstructure and properties of Cu-Cr-Zr-Ti alloy[J]. Heat Treatment of Metals, 2018, 43(8): 7-12.
[11]Shangina D V, Bochvar N R, Morozova A I, et al. Effect of chromium and zirconium content on structure, strength and electrical conductivity of Cu-Cr-Zr alloys after high pressure torsion[J]. Materials Letters, 2017, 199: 46-49.
[12]蔡薇, 高鹏哲, 陈辉明, 等. Cu-Cr-Zr-Ti合金高温热变形行为及热加工图[J]. 金属热处理, 2019, 44(8): 147-153.
Cai Wei, Gao Pengzhe, Chen Huiming, et al. High temperature deformation behavior and hot processing map of Cu-Cr-Zr-Ti alloy[J]. Heat Treatment of Metals, 2019, 44(8): 147-153.
[13]Huang Y C, Li M, Ma C Q, et al. Flow behaviour constitutive model of CuCrZr alloy and 35CrMo steel based on dynamic recrystallization softening effect under elevated temperature[J]. Journal of Central South University, 2019, 26(6): 1550-1562.
[14]任军帅, 李欣琳, 肖松涛, 等. 新型Ti-Al-Zr-Nb-Mo-Si 钛合金热变形行为及于BP神经网络模型的本构关系研究[J]. 材料导报, 2020, 34(S1): 283-288, 303.
Ren Junshuai, Li Xinlin, Xiao Songtao, et al. Hot deformation behavior and constitutive relationship of Ti-Al-Zr-Nb-Mo-Si alloy based on artificial neural network model[J]. Materials Reports, 2020, 34(S1): 283-288, 303.
[15]刘少飞, 屈银虎, 王崇楼, 等. 金属和合金高温变形过程本构模型的研究进展[J]. 材料导报, 2018, 32(13): 2241-2251, 2277.
Liu Shaofei, Qu Yinhu, Wang Chonglou, et al. Advances in constitutive modles of metals and alloys during hot deformation[J]. Materials Reports, 2018, 32(13): 2241-2251, 2277.
[16]Qian X Y, Peng X B, Song Y T, et al. Dynamic constitutive relationship of CuCrZr alloy based on Johnson-Cook model[J]. Nuclear Materials and Energy, 2020, 24: 100768.
[17]丁宗业, 贾淑果, 宁向梅, 等. Cu-Cr-Zr合金的高温热变形行为[J]. 中国有色金属学报, 2020, 30(8): 1811-1817.
Ding Zongye, Jia Shuguo, Ning Xiangmei, et al. Hot deformation behavior of Cu-Cr-Zr alloy[J]. The Chinese Journal of Nonferrous Metals, 2020, 30(8): 1811-1817.
[18]Rusinek A, JA Rodríguez-Martínez, Arias A. A thermo-viscoplastic constitutive model for FCC metals with application to OFHC copper[J]. International Journal of Mechanical Sciences, 2010, 52(2): 120-135.
[19]Meng A, Nie J F, Wei K, et al. Optimization of strength, ductility and electrical conductivity of a Cu-Cr-Zr alloy by cold rolling and aging treatment[J]. Vacuum, 2019, 167: 329-335.
[20]Abd EL-Aty A, Xu Y, Zhang S H, et al. Impact of high strain rate deformation on the mechanical behavior, fracture mechanisms and anisotropic response of 2060 Al-Cu-Li alloy[J]. Journal of Advanced Research, 2019, 18: 19-37.
[21]Johnson G R, Cook W H. Fracture characteristics of three metals subjected to various strains, strain rates, temperatures and pressures[J]. Engineering Fracture Mechanics, 1985, 21(1): 31-48.
[22]Lin Y C, Chen X M, Liu G. A modified Johnson-Cook model for tensile behaviors of typical high-strength alloy steel[J]. Materials Science and Engineering A, 2010, 527(26): 6980-6986.
[23]Niu L Q, Cao M, Liang Z L, et al. A modified Johnson-Cook model considering strain softening of A356 alloy[J]. Materials Science and Engineering A, 2020, 789: 139612.
[24]Wang Y B, Zhang C S, Yang Y, et al. The identification of improved Johnson-Cook constitutive model in a wide range of temperature and its application in predicting FLCs of Al-Mg-Li sheet[J]. Journal of Materials Research and Technology, 2020, 9(3): 3782-3795.
[25]Chakrabarty R, Song J. A modified Johnson-Cook material model with strain gradient plasticity consideration for numerical simulation of cold spray process[J]. Surface and Coatings Technology, 2020, 397: 125981.