陈翱,侯瑾睿,周孟,田保红,刘勇

• 1:河南科技大学材料科学与工程学院
• 2:有色金属新材料与先进加工技术省部共建协同创新中心

摘要(Abstract)：

采用冷冻干燥和放电等离子烧结的方法制备了原位石墨烯掺杂氧化铈增强的0.5GO/CeO_2-Cu30Cr10W复合材料。在600～900℃的变形温度范围和0.001～1 s~(-1)应变速率条件下,利用Gleeble-1500D热模拟试验机对复合材料进行了等温压缩试验,利用光学显微镜和透射电镜分析了其微观组织,绘制了不同试验条件下的真应力-真应变曲线,基于双曲正弦模型构建了复合材料的本构方程。结果表明:复合材料的抗拉强度为386 MPa,导电率为63.8%IACS;在热变形过程中,复合材料的流变应力随着热变形温度的升高而减小,随着应变速率的增大而增加,呈现出热敏感性和正应变速率敏感性;铬颗粒被挤压成条状,大量的位错缠结成网状位错结构,复合材料的动态再结晶机制是不连续的动态再结晶。

关键词(KeyWords)： GO/CeO_2-Cu30Cr10W复合材料;石墨烯;热变形;本构方程

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52071134);; 河南省优秀人才创新基金(ZYQR201912164);; 河南省高等学校重点科研项目(21A430013);; 河南省自然科学基金(202300410144)

作者(Author): 陈翱,侯瑾睿,周孟,田保红,刘勇

DOI: 10.13289/j.issn.1009-6264.2021-0270

参考文献(References)：

• [1] 余杰，曾洪亮，温业成，等.石墨烯增强铜基复合材料的研究进展[J].材料科学与工程学报，2021,39(1):167-173.YU Jie,ZENG Hong-liang,WEN Ye-cheng,et al.Research progress of graphene reinforced copper matrix composites[J].Journal of Materials Science and Engineering,2021,39(1):167-173.
• [2] Li H Y,Wang X H,Hu Z D,et al.Investigation of arc erosion mechanism for tin dioxide-reinforced silver-based electrical contact material under direct current[J].Journal of Electronic Materials,2020,49:4730-4740.
• [3] Sahmani S,Safaei B.Large-amplitude oscillations of composite conical nanoshells with in-plane heterogeneity including surface stress effect[J].Applied Mathematical Modelling,2021,89:1792-1813.
• [4] Li T J,Wang Y Q,Yang M,et al.High strength and conductivity copper matrix composites reinforced by in situ graphene through severe plastic deformation processes[J].Journal of Alloys and Compound,2021,851:156703.
• [5] 冯孟奇，贾淑果，李韶林，等.铜/碳复合材料的研究进展[J].材料热处理学报，2020,41(12):25-36.FENG Meng-qi,JIA Shu-guo,LI Shao-lin,et al.Research progress of copper/carbon composites[J].Transactions of Materials and Heat Treatment,2020,41(12):25-36.
• [6] 周洪雷，刘平，陈小红，等.原位合成CNTs 强化铜基复合材料的组织与性能[J].材料热处理学报，2018,39(7):1-6.ZHOU Hong-lei,LIU Ping,CHEN Xiao-hong,et al.Microstructure and properties of in situ synthesized CNTs reinforced copper matrix composites[J].Transactions of Materials and Heat Treatment,2018,39(7):1-6.
• [7] Zhang Y,Chai Z,Volinsky A A,et al.Processing maps for the Cu-Cr-Zr-Y alloy hot deformation behavior[J].Materials Science and Engineering A,2016,662:320-329.
• [8] Janovszky D,Tomolya K,Sveda M,et al.Effect of Y and Ni addition on liquid immiscibility in Cu-Zr-Ag ternary alloys[J].Journal of Alloys and Compound,2014,615:S616-S620.
• [9] Li H H,Zhang S H,Chen Y,et al.Effects of small amount addition of rare earth Ce on microstructure and properties of cast pure copper[J].Journal of Materials Engineering and Performance,2015,24:2857-2865.
• [10] Mu Z,Geng H R,Li M M,et al.Effects of Y2O3 on the property of copper based contact materials[J].Composites Part B,2013,52:51-55.
• [11] 陈勉之，陈文革，邢力谦，等.不同稀土元素对W-Cu电触头材料性能的影响[J].特种铸造及有色合金，2008,28(7):570-572.CHEN Mian-zhi,CHEN Wen-ge,XING Li-qian,et al.Effect of different rare earth elements on the material properties of W-Cu electrical contacts[J].Special-cast and Non-ferrous Alloys,2008,28(7):570-572.
• [12] Chen H P,Cheng J G,Zhang M L,et al.Effect of rare earth oxide addition on the microstructure and properties of ultrafine grain W-20Cu composites[J].Rare Metal Materials and Engineering,2018,47(9):2626-2630.
• [13] Hwang J,Yoon T,Jin S H,et al.Enhanced mechanical properties of Graphene/Copper nanocomposites using a molecular-level mixing process[J].Advanced Materials,2013,25:6724-6729.
• [14] Chu K,Wang F,Li Y B,et al.Interface structure and strengthening behavior of graphene/CuCr composites[J].Carbon,2018,133:127-139.
• [15] Yan Y X,Nashath F Z,Chen S,et al.Synthesis of graphene:Potential carbon precursors and approaches[J].Nanotechnology Reviews,2020,9(1):1284-1314.
• [16] Zhang X H,Zhang Y,Tian B H,et al.Graphene oxide effects on the properties of Al2O3-Cu/35W5Cr composite[J].Journal of Materials Science and Technology,2020,37(2):185-199.
• [17] 刘宇宁.石墨烯增强铜基复合材料组织与性能研究[D].长沙：湖南大学，2018.LIU Yu-ning.Microstructure and properties of graphene reinforced copper matrix composites[D].Changsha:Hunan University,2018.
• [18] 赵超.高强韧Cu-15Ni-8Sn合金的制备及相关基础研究[D].广州：华南理工大学，2020.ZHAO Chao.Preparation and basic research of high strength and toughness Cu-15Ni-8Sn alloy[D].Guangzhou:South China University of Technology,2020.
• [19] 王祝堂，田荣璋.铜合金及其加工手册[M].长沙：中南大学出版社，2002.WANG Zhu-tang,TIAN Rong-zhang.Copper Alloy and Its Processing Manual[M].Changsha:Central South University Press,2002.
• [20] 王原琛，周剑秋，王蒙晰.多级纳米孪晶金属在孪晶界处的堆积位错密度的本构模型和裂纹成核的准则[J].热加工工艺，2021,50(8):38-44.WANG Yuan-chen,ZHOU Jian-qiu,WANG Meng-xi.Constitutive model of stacking dislocation density at twin boundary and criterion of crack nucleation for multistage nano twin metals[J].Hot Working Technology,2021,50(8):38-44.
• [21] Mirzadeh,H.Constitutive modeling and prediction of hot deformation flow stress under dynamic recrystallization conditions[J].Mechanics of Materials,2015,85:66-79.
• [22] Zener C,Hollomon J H.Effect of strain rate upon plastic flow of steel[J].Journal of Applied physics,1944,15(1):22-32.
• [23] 康军伟，周延军，刘海涛，等.C17200合金热变形行为及热加工图[J].材料热处理学报，2020,41(10):130-136.KANG Jun-wei,ZHOU Yan-jun,LIU Hai-tao,et al.Hot deformation behavior and hot working diagram of C17200 alloy[J].Transactions of Materials and Heat Treatment,2020,41(10):130-136.
• [24] Geng Y F,Li X,Zhou H L,et al.Effect of Ti addition on microstructure evolution and precipitation in Cu-Co-Si alloy during hot deformation[J].Journal of Alloys and Compounds,2020,821:153518.
• [25] 班宜杰，张毅，田保红，等.Cu-0.8Cr-0.3Zr-0.2Mg合金热变形行为及热加工图[J].材料热处理学报，2019,40(9):44-49.BAN Yi-jie,ZHANG Yi,TIAN Bao-hong,et al.Hot deformation behavior and hot working diagram of Cu-0.8Cr-0.3Ar-0.2Mg alloy[J].Transactions of Materials and Heat Treatment,2019,40(9):44-49.

文章评论(Comment)：