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耐热铝合金线在极端工况下的热损伤机制是一个重要的科学问题。对Al-Zr-Er合金线在400℃下进行不同时间的热处理以模拟其高温服役工况,研究了Al-Zr-Er合金线热处理后的微观组织和力学性能。结果表明:经400℃热处理后,Al-Zr-Er合金线的晶粒尺寸随热处理时间的增加而逐渐增大,内部晶粒组织再结晶程度逐渐增加,抗拉强度逐渐减小,抗拉强度与导电率呈现制约关系;Al-Zr-Er合金线在400℃热处理1 h后强度残存率低于90%,其热损伤机制主要是晶粒尺寸增大导致细晶强化效果下降。
Abstract：The thermal damage mechanism of heat-resistant aluminum alloy wires under extreme working conditions is an important scientific issue. Heat treatment of Al-Zr-Er alloy wire at 400 ℃ for different time was carried out to simulate its high-temperature service conditions, and microstructure and mechanical properties of the Al-Zr-Er alloy wires after heat treatment were studied. The results show that after heat treatment at 400 ℃, the grain size of the Al-Zr-Er alloy wire gradually increases with the increase of heat treatment time,the degree of recrystallization of internal grain structure gradually increases, the tensile strength gradually decreases, and there is a restrictive relationship between tensile strength and electrical conductivity. The strength residual rate of the Al-Zr-Er alloy wire after heat treatment at 400 ℃ for 1 h is less than 90%, and its thermal damage mechanism is mainly due to the decrease in fine grain strengthening effect caused by the increase in grain size.
[1] Hou J P,Wang Q,Yang H J,et al. Microstructure evolution and strengthening mechanisms of cold-drawn commercially pure aluminum wire[J]. Materials Science and Engineering A,2015,639:103-106.
[2]梁振宇.合金元素对Al-Mg-Si合金导体材料组织与性能的影响研究[D].长沙:湖南大学,2011.LIANG Zhen-yu. Effect of elements addition on microstructure and properties of Al-Mg-Si aluminum alloy used for electrical conductor[D]. Changsha:Hunan University,2011.
[3]蒋炜华,李昊,张乃保. Zr元素对耐热铝合金导线组织和性能的影响[J].热加工工艺,2018,47(8):71-73.JIANG Wei-hua,LI Hao,ZHANG Nai-bao. Effects of Zr element on microstructure and properties of heat-resistant aluminum alloy wire[J]. Hot Working Technology,2018,47(8):71-73.
[4]彭宁云,黎继军.新型耐热铝合金导线输电技术的应用研究[J].广东电力,2010,23(2):18-22.PENG Ning-yun,LI Ji-jun. Research on application of new transmission technology of heat-resisting aluminum-alloy conductor[J].Guangdong Electric Power,2010,23(2):18-22.
[5]张琪.耐热铝合金的研究及应用现状与展望[J].有色金属加工,2021,50(1):1-4.ZHANG Qi. Research and application status and prospect of heat-resistant aluminum alloy[J]. Non-Ferrous Metals Processing,2021,50(1):1-4.
[6]何超.浅谈耐热铝合金导线的应用[J].沿海企业与科技,2009(10):176-178.HE Chao. Discussion on the application of heat-resistant aluminum alloy wire[J]. Coastal Enterprises and Science&Technology,2009(10):176-178.
[7] Gao T,Ceguerra A,Breen A,et al. Precipitation behaviors of cubic and tetragonal Zr-rich phase in Al-(Si-)Zr alloys[J]. Journal of Alloys and Compounds,2016,674(7):125-130.
[8] Yuan W H,Liang Z Y,Zhang C Y,et al. Effects of La addition on the mechanical properties and thermal-resistant properties of AlMg-Si-Zr alloys based on AA 6201[J]. Materials and Design,2012,34:788-792.
[9] Westengen H,Auran L,Reiso O. Effect of minor additions of transition elements on the recrystallization of some commercial aluminum alloys[J]. Aluminum,1981,57(12):797-780.
[10] Kashyap K T,Chandrashekar T. Effects and mechanisms of grain refinement in aluminium alloys[J]. Bulletin of Materials Science,2001,24(4):345-353.
[11] Robson J D,Prangnell P B. Modelling Al3Zr dispersoid precipitation in multicomponent aluminium alloys[J]. Materials Science and Engineering A,2003,352(1):240-250.
[12]顾静,田园,高海燕,等. Al-Zr-Y合金的时效析出机制和性能[J].中国有色金属学报,2016,26(2):243-251.GU Jing,TIAN Yuan,GAO Hai-yan,et al. Precipitation mechanism and property of Al-Zr-Y alloy[J]. Transactions of Nonferrous Metals Society of China,2016,26(2):243-251.
[13]李静,杨昇,蔡斌,等. Al-Er-xZr系列耐热铝合金导线的组织与性能[J].金属热处理,2015,40(11):25-28.LI Jing,YANG Sheng,CAI Bin,et al. Microstructure and properties of Al-Er-xZr heat-resistant aluminum alloy conductor[J]. Heat Treatment of Metals,2015,40(11):25-28.
[14] Fuller C B,Seidman D N,Dunand D C. Mechanical properties of Al(Sc,Zr)alloys at ambient and elevated temperatures[J]. Acta Materialia,2003,51(9):4803-4814.
[15] Zhang J Y,Zhao H T,Zhu J H,et al. Relationship between electrical resistivity and Al3(Zr,Sc)core-shell dispersoids of Al-Zr-Sc electrical transmission cable:Modeling and experimental results[J]. Electric Power Systems Research,2019,168(3):1-7.
[16] Liu L,Jiang J T,Zhang B,et al. Enhancement of strength and electrical conductivity for a dilute Al-Sc-Zr alloy via heat treatments and cold drawing[J]. Journal of Materials Science and Technology,2019,35(6):962-971.
[17]文胜平,林双平,宫博,等.含铒Al-4. 5Mg-0. 7Mn-0. 1Zr合金中Al3Er相的形成及微观结构[J].稀有金属,2010,34(6):802-806.WEN Sheng-ping,LIN Shuang-ping,GONG Bo,et al. Formation and microstructure of Al3Er in Er-Bearing Al-4. 5 Mg-0. 7 Mn-0. 1Zr alloy[J]. Rare Metals,2010,34(6):802-806.
[18]宫博,文胜平,黄晖,等.退火过程Al-6Mg-0. 7Mn-0. 1Zr-0. 3Er合金中纳米Al3(Zrx Er1-x)析出相的演化[J].金属学报,2010,46(7):850-856.GONG Bo,WEN Sheng-ping,HUANG Hui,et al. Evolution of nanoscale Al3(Zrx Er1-x)precipitates in Al-6Mg-0. 7Mn-0. 1Zr-0. 3Er alloy alloy during annealing[J]. Acta Metallurgica Sinica,2010,46(7):850-856.
[19] Wu Y J,Su Y Y,Dang P,et al. Revealing the thermal damage mechanism of an Al-Zr-Er alloy wire by quantitative calculation:The contribution of dislocations and nano-precipitates[J]. Advanced Engineering Materials,2023,25(21):1-2.
[20]侯嘉鹏,孙朋飞,王强,等.突破强度-导电率制约关系:晶粒异构设计[J].金属学报,2022,58(11):1467-1477.HOU Jia-peng,SUN Peng-fei,WANG Qiang,et al. Breaking the trade-off relation between strength and electrical conductivity:Heterogeneous grain design[J]. Acta Metallurgica Sinica,2022,58(11):1467-1477.
[21]侯嘉鹏.铝及铝合金线高强度高导电率机制研究[D].沈阳:东北大学,2019.HOU Jia-peng. Investigation on high strength-high electrical conductivity mechanisms of Al and Al alloy wires[D]. Shenyang:Northeastern University,2019.
[22]王江伟,陈映彬,祝祺,等.金属材料的晶界塑性变形机制[J].金属学报,2022,58(6):726-745.WANG Jiang-wei,CHEN Ying-bin,ZHU Qi,et al. Grain boundary dominated plasticity in metallic materials[J]. Acta Metallurgica Sinica,2022,58(6):726-745.
[23]王硕,王俊升,梁婷婷,等.高强、高导铝合金研发的机器学习策略[J].材料热处理学报,2023,44(11):27-34.WANG Shuo, WANG Jun-sheng, LIANG Ting-ting, et al. Development of high-strength, high-conductivity aluminum alloys:A machine learning strategy[J]. Transactions of Materials and Heat Treatment,2023,44(11):27-34.
[24] Botcharova E,Freudenberger J,Schultz L. Mechanical and electrical properties of mechanically alloyed nanocrystalline Cu-Nb alloys[J]. Acta Materialia,2006,54(12):3333-3341.
[25] Cabibbo M. Microstructure strengthening mechanisms in different equal channel angular pressed aluminum alloys[J]. Materials Science and Engineering A,2013,560:413-432.
[26] Kim W J,Wang J Y. Microstructure of the post-ECAP aging processed 6061 Al alloys[J]. Materials Science and Engineering A,2007,464(1/2):23-27.
[27] Ding S X,Lee W T,Chang C P,et al. Improvement of strength of magnesium alloy processed by equal channel angular extrusion[J]. Scripta Materialia,2008,59(9):1006-1009.
[28] Ito Y, Horita Z. Microstructural evolution in pure aluminum processed by high-pressure torsion[J]. Materials Science and Engineering A,2009,503(1/2):32-36.
[29] Kamikawa N,Huang X,Tsuji N,et al. Strengthening mechanisms in nanostructured high-purity aluminium deformed to high strain and annealed[J]. Acta Materialia,2009,57(14):4198-4208.
[30] Saito Y,Utsunomiya H,Tsuji N,et al. Novel ultra-high straining process for bulk materials-development of the accumulative rollbonding(ARB)process[J]. Acta Materialia,1999,47(2):579-583.
[31] Son H W, Lee J C, Cho C H, et al. Effect of Mg content on the dislocation characteristics and discontinuous dynamic recrystallization during the hot deformation of Al-Mg alloy[J]. Journal of Alloys and Compounds,2021,887:161397.
[32] Duchaussoy A,Sauvage X,Deschamps A,et al. Complex interactions between precipitation,grain growth and recrystallization in a severely deformed Al-Zn-Mg-Cu alloy and consequences on the mechanical behavior[J]. Materialia,2021,15:101028.
[33] Ma Q,Li B,Whittington W R,et al. Texture evolution during dynamic recrystallization in a magnesium alloy at 450℃[J]. Acta Materialia,2014,67:102-115.
[34] Wang K,Zhang C,Meng Z,et al. Precipitation behavior and its effect on the dynamic recrystallization of a novel extruded Al-Cu-Li alloy[J]. Materials&Design,2022,223:111135.
[35]李明高,孙梅玉,陈朝中,等.微量Zr添加对6082铝合金热变形再结晶组织演变的影响[J].材料工程,2024,52(9):1-12.LI Ming-gao,SUN Mei-yu,CHEN Chao-zhong,et al. Effect of minor Zr addition on recrystallization microstructure evolution of 6082aluminum alloy during hot deformation[J]. Journal of Materials Engineering,2024,52(9):1-12.
[36] Zhang Z,Liu R,Li D,et al. Investigation on deformation behaviors and dynamic recrystallization mechanism of spray formed Al-ZnMg-Cu alloy under hot compression[J]. Journal of Materials Research and Technology,2024,28:4401-4416.
[37] Wang Y,Wang Y T,Li R D,et al. Hall-Petch relationship in selective laser melting additively manufactured metals:using grain or cell size[J]. Journal of Central South University,2021,28(4):1043-1057.
基本信息:
DOI：10.13289/j.issn.1009-6264.2024-0395
中图分类号:TG146.21
引用信息:
[1]张晏宁,周佳怡,苏颖颖等.Al-Zr-Er合金线在模拟极端工况下的热损伤机制[J].材料热处理学报,2025,46(06):35-43.DOI:10.13289/j.issn.1009-6264.2024-0395.
基金信息:
国家自然科学基金(52273322)