介一飞,陈小红,周洪雷,付少利,蒋锦涛

• 1:上海理工大学材料与化学学院

摘要(Abstract)：

在应变速率为0.001、0.01、0.1和1 s~(-1),变形温度为300、350、400和450℃及变形量为60%的条件下，利用Gleeble-3500热模拟试验机对CNTs/Al复合材料进行热压缩试验，研究其热变形行为。通过试验数据构建了复合材料的本构方程和热加工图，采用光学显微镜分析了其变形前后的显微组织。结果表明：当应变速率一定时，复合材料的流变应力随着变形温度的升高而降低；当变形温度一定时，流变应力随着应变速率的增大而增大，计算得到该复合材料的热变形激活能为216.634 kJ/mol,说明其具有良好的成形能力。本构方程预测结果的平均准确率达到了95%以上，所得本构方程对复合材料的流变行为具有指导作用。热加工图表明该复合材料的适宜加工区间为：变形温度为340～450℃,应变速率为0.005～1 s~(-1)。

关键词(KeyWords)： CNTs/Al复合材料;热压缩;本构方程;热加工图

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51201107)

作者(Author): 介一飞,陈小红,周洪雷,付少利,蒋锦涛

DOI: 10.13289/j.issn.1009-6264.2022-0653

参考文献(References)：

• [1] 刘兵，彭超群，王日初，等.大飞机用铝合金的研究现状及展望[J].中国有色金属学报，2010,20(9):1705-1715.LIU Bing,PENG Chao-qun,WANG Ri-chu,et al.Recent development and prospects for giant plane aluminum alloys[J].The Chinese Journal of Nonferrous Metals,2010,20(9):1705-1715.
• [2] 湛利华.铝合金连续铸轧过程流变行为研究及热—力耦合分析[D].长沙：中南大学，2005.ZHAN Li-hua.Rheologieal behavior research and thermo-mechanieal coupled analysis of aluminium continuous roll casting proeess[D].Changsha:Central South University,2005.
• [3] Hesabi R Z,Simchi A,Reihani M S S.Structural evolution during mechanical milling of nanometric and micrometric Al2O3 reinforced Al matrix composites[J].Materials Science and Engineering A,2006,428(1):159-168.
• [4] Hashim J,Looney L,Hashim M S J.The wettability of SiC particles by molten aluminium alloy[J].Journal of Materials Processing Technology,2001,119(1/3):324-328.
• [5] Singh J,Chauhan A.Characterization of hybrid aluminum matrix composites for advanced applications-A review[J].Journal of Materials Research and Technology,2016,5(2):159-169.
• [6] 任东超，邱娟，杨涛，等.2219铝合金热加工及组织演化[J].锻压技术，2022,47(5):211-216.REN Dong-chao,QIU Juan,YANG Tao,et al.Thermal working and microstructure evolution for 2219 aluminum alloy[J].Forging and Stamping Technology,2022,47(5):211-216.
• [7] 娄淑梅，郭广鑫，刘永强，等.0.5%石墨烯增强铝基复合材料的热变形行为[J].机械工程材料，2020,44(12):75-79.LOU Shu-mei,GUO Guang-xin,LIU Yong-qiang,et al.Thermal deformation behavior of 0.5% grapaphene reinforced aluminum composite[J].Materials for Mechanical Engineering,2020,44(12):75-79.
• [8] 杨柳.CNTs/Al-Cu复合材料热加工变形行为的研究[D].重庆：重庆大学，2015.YANG Liu.Study on hot deformation behaviors of CNTs/Al-Cu composites[D].Chongqing:Chongqing University,2015.
• [9] He W J,Li C H,Luan B F,et al.Deformation behaviors and processing maps of CNTs/Al alloy composite fabricated by flake powder metallurgy[J].Transactions of Nonferrous Metals Society of China,2015,25(11):3578-3584.
• [10] 戴荣荣.碳纳米管增强铝基复合材料的制备与性能研究[D].合肥：合肥工业大学，2014.DAI Rong-rong.Study on preparation and properties of aluminum matrix composites reinforced by carbon nanotubes[D].Hefei:Hefei University of Technology,2014.
• [11] 刘勇，耿昊，朱顺新，等.10%Cr/Cu复合材料的热变形行为及再结晶动力学模型[J].材料热处理学报，2018,39(9):113-119.LIU Yong,GENG Hao,ZHU Shun-xin,et al.Flow behavior and dynamic recrystallization model for 10%Cr/Cu composite during hot deformation[J] Transactions of Materials and Heat Treatment,2018,39(9):113-119.
• [12] 郑许，彭斐，朱玉涛，等.一种Al-Zn-Mg-Cu铝合金的热压缩变形行为及微观组织演变[J].轻金属，2022(2):40-46.ZHENG Xu,PENG Fei,ZHU Yu-tao,et al.Hot compression deformation behavior and microstructure evolution of an Al-Zn-Mg-Cu aluminum alloy[J].Light Metal,2022(2):40-46.
• [13] 高明，赵熹，刘杰，等.新型高强韧Al-Zn-Mg-Cu合金热变形本构方程及热加工图研究[J].塑性工程学报，2021,28(3):126-136.GAO Ming,ZHAO Xi,LIU Jie,et al.Research on hot deformation constitutive equation and hot processing map of new-type Al-Zn-Mg-Cu alloy with high strength and ductility[J].Journal of Plastics Engineering,2021,28(3):126-136.
• [14] Lee Y C,Hwang E,Shih Y P.A combined approach to fuzzy model identification[J].IEEE Transactions on Systems,Man,and Cybernetics,1994,24(5):736-744.
• [15] Garofalo F,Butrymowicz D B.Fundamentals of creep and creep-rupture in metals[J].Physics Today,1966,19(5):100-102.
• [16] Mcqueen H J,Yue S,Ryan N D,et al.Hot working characteristics of steels in austenitic state[J].Journal of Materials Processing Technology,1995,53(1/2):293-310.
• [17] Castro-Fernandez F R,Sellars C M,Whiteman J A.Changes of flow stress and microstructure during hot deformation of Al-1Mg-1Mn[J].Materials Science & Technology,1990,6(5):453-460.
• [18] Shi H,Mclaren A J,Sellars C M,et al.Constitutive equations for high temperature flow stress of aluminium alloys[J].Materials Science and Technology,1997,13(3):210-216.
• [19] Zener C,Hollomon J H .Effect of strain rate upon plastic flow of steel[J].Journal of Applied Physics,1944,15(1):22-32.
• [20] 任钰鹏，刘平，陈小红，等.新型Al-Mg-Si-RE合金的热变形行为[J].金属热处理，2022,47(11):168-177.REN Yu-peng,LIU Ping,CHEN Xiao-hong,et al.Thermal deformation behavior of novel Al-Mg-Si-RE alloys[J].Heat Treatment of Metals,2022,47(11):168-177.
• [21] 王胜龙，秦中环，周小京，等.航天用6005A铝合金热变形行为研究[J].航天制造技术，2021(6):5-11.WANG Sheng-long,QIN Zhong-huan,ZHOU Xiao-jing,et al.Research on thermal deformation behavior of 6005A aluminum alloy used in aerospace[J].Aerospace Manufacturing Technology,2021(6):5-11.
• [22] Prasad Y V .Hot Working Guide:A Compendium of Processing Maps[M].Almere:ASM International,1997.
• [23] 包张飞，唐丽娜，吴杏苹，等.2195铝锂合金的热变形行为[J].金属热处理，2021,46(8):144-149.BAO Zhang-fei,TANG Li-na,WU Xing-ping,et al.Hot deformation behavior of 2195 aluminum-lithium alloy[J].Heat Treatment of Metals,2021,46(8):144-149.
• [24] 骆浩东.BFe30-1-1合金热变形行为及热加工图[D].兰州：兰州理工大学，2017.LUO Hao-dong.Hot deformation behavior and processing maps of BFe30-1-1 alloy[D].Lanzhou:Lanzhou University of Technology,2017.
• [25] 李超帅.纯钼的高温热变形行为与交叉轧制研究[D].沈阳：东北大学，2014.LI Chao-shuai.Studies on hot deformation behavior and cross rolling of molybdenum[D].Shenyang:Northeastern University,2014.
• [26] 李晓普.放电等离子烧结制备 SiCp/6061Al 铝基复合材料及其热变形行为的研究[D].秦皇岛：燕山大学，2016.LI Xiao-pu.Research on hot deformation behavior of SiCp/6061 composites prepared by spark plasma sinter[D].Qinhuangdao:Yanshan University,2016.
• [27] 刘振宇.碳纳米管增强铝基复合材料的机械分散制备及其组织性能研究[D].大连：大连理工大学，2014.LIU Zhen-yu.Fabrication,microstructure and properties of carbon nanotube reinforced aluminum matrix composites prepared by mechanical method[D].Dalian:Dalian University of Technology,2014.

文章评论(Comment)：