Cu-Cr-Zr合金的低周疲劳行为

doi:10.13251/j.issn.0254-6051.2020.04.021

金属热处理 ›› 2020, Vol. 45 ›› Issue (4): 105-109.DOI: 10.13251/j.issn.0254-6051.2020.04.021

Cu-Cr-Zr合金的低周疲劳行为

揭晓¹, 钟强强¹, 王俊峰², 陈金水², 肖翔鹏²

1. 台州科技职业学院机电与模具工程学院, 浙江台州 318020;
2. 江西理工大学材料冶金化学学部, 江西赣州 341000

收稿日期:2020-01-12 出版日期:2020-04-25 发布日期:2020-05-08
通讯作者: 肖翔鹏,E-mail:xiao_xiangpeng@126.com
作者简介:揭晓(1967—),男,副教授,主要从事材料加工及数控技术研究,E-mail:jiexiao88@126.com
基金资助:
国家自然科学基金(51561008)

Low cycle fatigue behavior of Cu-Cr-Zr alloy

Jie Xiao¹, Zhong Qiangqiang¹, Wang Junfeng², Chen Jinshui², Xiao Xiangpeng²

1. School of Mechanical and Electrical Engineering, Taizhou Vocational College of Science and Technology, Taizhou Zhejiang 318020, China;
2. Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou Jiangxi 341000, China

Received:2020-01-12 Online:2020-04-25 Published:2020-05-08

摘要/Abstract

摘要： 通过室温低周疲劳(LCF)试验研究了Cu-Cr-Zr合金的低周疲劳性能和循环变形行为,利用电子背散射衍射、透射电镜和扫描电镜分别分析了合金循环变形前后的微观结构和疲劳断口。结果表明:Cu-Cr-Zr合金的弹性应变幅、塑性应变幅与断裂时的循环周次之间的关系可分别用Basquin和Coffin-Manson公式表示。Cu-Cr-Zr合金在高外加总应变幅(Δε_t/2=0.6%)的疲劳变形后期会出现循环硬化现象,循环变形组织为位错墙、位错团簇、亚结构胞状组织的混合结构,并且观察到了孪晶的形成。此外,所选材料在外加总应变幅为0.4%时的疲劳断口呈现多疲劳源特征,疲劳裂纹扩展区中观察到了大量的撕裂棱、韧窝、以及犁沟。

关键词: Cu-Cr-Zr合金, 低周疲劳行为, 疲劳断口, 位错形貌

Abstract: The low-cycle fatigue properties and cyclic deformation behavior of Cu-Cr-Zr alloys were studied by means of low cycle fatigue (LCF) tests at room temperature. The microstructure and fatigue fracture of the alloy were analyzed by electron backscattered diffraction (EBSD), transmission electron microscopy (TEM), and scanning electron microscopy(SEM). The results show that the relationship between the elastic strain amplitude, the plastic strain amplitude and the number of cycles can be expressed by Basquin and Coffin-Manson formulas, respectively. The cyclic hardening occurs at the later stage of fatigue deformation with a high applied total strain amplitude (Δε_t/2=0.6%), the cyclic deformation microstructure is a mixed structure of dislocation walls, dislocation clusters, and cellular substructure, and the formation of twins is observed. In addition, the fatigue fracture characteristics of the selected material at an applied total strain amplitude of 0.4% exhibit multiple fatigue sources, a large number of tearing edges, dimples, and furrows are observed in the fatigue crack propagation area.

Key words: Cu-Cr-Zr alloy, low cycle fatigue behavior, fatigue fracture, dislocation morphology

中图分类号:

TG146.1

揭晓, 钟强强, 王俊峰, 陈金水, 肖翔鹏. Cu-Cr-Zr合金的低周疲劳行为[J]. 金属热处理, 2020, 45(4): 105-109.

Jie Xiao, Zhong Qiangqiang, Wang Junfeng, Chen Jinshui, Xiao Xiangpeng. Low cycle fatigue behavior of Cu-Cr-Zr alloy[J]. Heat Treatment of Metals, 2020, 45(4): 105-109.

参考文献

[1]Cheng J Y, Shen B, Yu F X. Precipitation in a Cu-Cr-Zr-Mg alloy during aging[J]. Materials Characterization, 2013, 81(4): 68-75.
[2]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): 164-171.
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): 164-171.
[3]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): 27-34.
Chen Jinshui, Wang Junfeng, Zhu Mingbiao, et al. Effect of Zr content on primary phase in Cu-Cr-Zr system alloys[J]. Heat Treatment of Metals, 2018, 43(7): 27-34.
[4]Fu H D, Xu S, Li W, et al. Effect of rolling and aging processes on microstructure and properties of Cu-Cr-Zr alloy[J]. Materials Science and Engineering A, 2017, 700: 107-115.
[5]Feng H, Jiang H C, Yan D S, et al. Effect of continuous extrusion on the microstructure and mechanical properties of a CuCrZr alloy[J]. Materials Science and Engineering A, 2013, 582: 219-224.
[6]Zhang B, Zhang Z G, Li W, et al. Effects of thermo-mechanical treatment on microstructure and properties of Cu-Cr-Zr alloys[J]. Physics Procedia, 2013, 50: 55-60.
[7]Lin G B, Wang Z D, Zhang M K, et al. Heat treatment method for making high strength and conductivity Cu-Cr-Zr alloy[J]. Materials Science and Technology, 2011, 27(5): 966-969.
[8]Li H Q, Xie S S, Mi X J, et al. Influence of cerium and yttrium on Cu-Cr-Zr alloys[J]. Journal of Rare Earths, 2006, 24(1): 367-371.
[9]Zhang Y, Volinsky A A, Tran H T, et al. Effects of Ce addition on high temperature deformation behavior of Cu-Cr-Zr alloys[J]. Journal of Materials Engineering and Performance, 2015, 24(10): 3783-3788.
[10]李克欣. 铜合金接触线低周疲劳性能研究[D]. 大连: 大连交通大学, 2011.
Li Kexin. Study on low cycle fatigue properties of copper alloy contact wire[D]. Dalian: Dalian Jiaotong University, 2011.
[11]Liu R, Tian Y Z, Zhang Z J, et al. Exploring the fatigue strength improvement of Cu-Al alloys[J]. Acta Materialia, 2018, 144: 613-626.
[12]段启强. 粗晶与细晶铜的低周疲劳与压缩性能[D]. 沈阳: 沈阳理工大学, 2005.
Duan Qiqiang. Low-Cycle fatigue and compression properties of coarse and fine grained copper[D]. Shenyang: Shenyang University of Science and Technology, 2005.
[13]Abdulstaar M A, Mhaede M, Wollmann M, et al. Fatigue behaviour of commercially pure aluminium processed by rotary swaging[J]. Journal of Materials Science, 2014, 49(3): 1138-1143.
[14]Vinogradov A, KanekoY, Kitagawa K. On the cyclic response of ultrafine-grained copper[J]. Materials Science Forum, 1998, 269: 987-992.
[15]Liu Y F, Wang F, Cang Y, et al. Unique defect evolution during the plastic deformation of a metalmatrix composite[J]. Scripta Materialia, 2019, 162: 316-320.
[16]Rao G S, Srinath J, Raman S. Effect of temperature on low cycle fatigue behavior of annealed Cu-Cr-Zr-Ti alloy in argon atmosphere[J]. Materials Science and Engineering A, 2017, 692: 156-167.
[17]An X H, Lin Q Y, Wu S D, et al. Improved fatigue strengths of nanocrystalline Cu and Cu-Al alloys[J]. Materials Research Letters 2015, 3(3): 135-141.
[18]An X H, Wu S D, Wang Z G, et al. Enhanced cyclic deformation responses of ultrafine-grained Cu and nanocrystalline Cu-Al alloys[J]. Acta Materialia, 2014, 74: 200-214.
[19]Tomé C N, Agnew S R, Blumenthal W R, et al. The relation between texture, twinning and mechanical properties in hexagonal aggregates[J]. Materials Science Forum, 2003, 408: 263-268.
[20]Guo X L, Lu L, Li S X. Dislocation evolution in twins of cyclically deformed copper[J]. Philosophical Magazine Letters, 2005, 85:613-623.

Cu-Cr-Zr合金的低周疲劳行为

Low cycle fatigue behavior of Cu-Cr-Zr alloy

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 5

编辑推荐

Metrics

本文评价

[1]	马玉霞, 党淑娥, 陈慧琴. 固溶处理对Cu-Cr-Zr合金组织与性能的影响[J]. 金属热处理, 2022, 47(1): 163-166.
[2]	廖雪峰, 张恒, 何学青, 黄元春, 李明. 不同Cr含量Cu-Cr-Zr合金的热拉伸变形行为[J]. 金属热处理, 2021, 46(9): 28-35.
[3]	周莎, 王快社, 王文, 彭湃, 张升懿, 黄丽颖. Cu-Cr-Zr合金搅拌摩擦焊接接头的组织和力学性能[J]. 金属热处理, 2020, 45(3): 35-40.
[4]	王洪新，程振邦，宣亮，张昌春. 纳米相增强铜合金的强化机理[J]. 金属热处理, 2017, 42(2): 80-82.
[5]	侯东健1，武磊1，高大伟2，张琦2,孙宁3,孔见1. 镁硅复合微合金化对高强高导铜铬锆合金时效过程的影响[J]. 金属热处理, 2016, 41(10): 102-107.