周学浩,孙有平,王文熙,何江美,李旺珍

• 1:广西科技大学机械工程学院

摘要(Abstract)：

采用显微组织分析、硬度测试、拉伸测试、SEM断口分析等手段,研究了热处理工艺对大应变轧制Al-Mg-Si-Cu合金板材显微组织及力学性能的影响。研究表明:轧制态Al-Mg-Si-Cu合金中轧制面组织呈纤维状且存在大量残留相。合金经固溶后显微组织中残留相基本溶解,晶粒得到小幅度长大,在时效处理后强化相均匀析出,使得合金得到强化效果。合金经510℃/80 min固溶和195℃/13 h时效热处理后,测试硬度值为127.1 HV,抗拉强度为410 MPa,伸长率达24.8%,断口分析为韧性断裂,合金表现出良好的力学性能。

关键词(KeyWords)： Al-Mg-Si-Cu合金;固溶处理;时效处理;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51561004);; 机械制造系统可靠性控制广西高校重点实验室开放基金项目(2014JZKG002);; 广西科技大学研究生教育创新计划项目(GKYC201603)

作者(Author): 周学浩,孙有平,王文熙,何江美,李旺珍

DOI: 10.13289/j.issn.1009-6264.2017.02.005

参考文献(References)：

• [1]李海,王秀丽,史志欣,等.Al-Mg-Si-(Cu)铝合金在连续升温中的析出行为[J].中国有色金属学报,2011,21(9):2028-2034.LI Hai,WANG Xiu-li,SHI Zhi-xin,et al.Precipitation behaviors of Al-Mg-Si-(Cu)aluminum alloys during continuous heating[J].The Chinese Journal of Nonferrous Metals,2011,21(9):2028-2034.
• [2]Yuan H C,Wang C,Zhang J S.Microstructural characteristics and aging response of Zn-containing Al-Mg-Si-Cu alloy[J].International Journal of Minerals Metallurgy and Materials,2013,20(7):659-664.
• [3]王冠,周佳,刘志文,等.铝合金汽车前碰撞横梁的轻量化设计与碰撞性能分析[J].中国有色金属学报,2012,22(1):90-98.WANG Guan,ZHOU Jia,LIU Zhi-wen,et al.Lightweight design and crash performance analysis of automotive aluminum bumper[J].The Chinese Journal of Nonferrous Metals,2012,22(1):90-98.
• [4]Esmaeili S,Wang X,Lloyd D J,et al.On the precipitation-hardening behavior of the Al-Mg-Si-Cu alloy AA6111[J].Metallurgical and Materials Transactions A,2003,34(3):751-763.
• [5]Yang W,Wang M,Jia Y,et al.Studies of orientations ofβ″precipitates in Al-Mg-Si-(Cu)alloys by electron diffraction and transition matrix analysis[J].Metallurgical and materials transactions A,2011,42(9):2917-2929.
• [6]Williams J C,Starke E A.Progress in structural materials for aerospace systems[J].Acta Materialia,2003,51(19):5775-5799.
• [7]李赫亮.Al Mg Si Cu合金轧制工艺及性能研究[D].沈阳:沈阳工业大学,2014.
• [8]林钢,林慧国,赵玉涛.铝合金加工手册[M].北京:机械工业出版社,2006.
• [9]陈剑虹,李明娥,余江瑞,等.热处理工艺对6061铝合金显微组织及力学性能的影响[J].兰州理工大学学报,2010,36(2):15-17.CHEN Jian-hong,LI Ming-e,YU Jiang-rui,et al.Influence of heat treatment on microstructure and mechanical properties of 6061 aluminum alloy[J].Journal of Lanzhou University of Technology,2010,36(2):15-17.
• [10]何福萍,刘峰,李建云,等.固溶方式及时效对Al-Mg-Si-Cu合金组织及性能的影响[J].有色金属科学与工程,2013,(1):44-48.HE Fu-ping,LIU Feng,LI Jian-yun,et al.The effects of solution process and aging on Al-Mg-Si-Cu alloy’s microstructure and properties[J].Nonferrous Metals Science and Engineering,2013,(1):44-48.
• [11]杨琳,邹景霞.固溶时效处理对汽车用Al-Mg-Si合金型材组织与性能的影响[J].金属热处理,2014,(10):35-38.YANG Lin,ZOU Jing-xia.Effect of solid solution and aging treatment on microstructure and mechanical properties of Al-Mg-Si alloy profile for automobile[J].Heat Treatment of Metals,2014,(10):35-38.
• [12]Lorimer G W,Nicholson R B.Further results on the nucleation of precipitates in the Al-Zn-Mg system[J].Acta Metallurgica,1966,14(8):1009-1013.
• [13]Demir H,Gündüz S.The effects of aging on machinability of 6061 aluminium alloy[J].Materials&Design,2009,30(5):1480-1483.
• [14]黄光杰,汪凌云.改善锻铝合金强韧性的热处理工艺及机理研究[J].重庆大学学报(自然科学版),1998,21(1):82-87.HUANG Guang-jie,WANG ling-yun.A study on the heat treatment process for improving strength and toughness of the forging aluminiun alloy and its mechanism[J].Journal of Chongqing University(Natural Science Edition),1998,21(1):82-87.
• [15]梁英.Al-Mg-Mn变形铝合金在退火过程中组织和性能的研究[D].哈尔滨:哈尔滨工业大学,2007.
• [16]刘丘林,刘允中,杜良,等.喷射成形6061铝合金的热处理工艺[J].中国有色金属学报,2012,22(2):350-357.LIU Qiu-lin,LIU Yun-zhong,DU Liang,et al.Heat treatment process of spray formed 6061 aluminum alloy[J],The Chinese Journal of Nonferrous Metals,2012,22(2):350-357.
• [17]何立子,张晓博,崔建忠.类6013铝合金热处理制度的研究[J].宇航材料工艺,1999,29(1):42-45+60.HE Li-zi,ZHANG Xiao-bo,CUI Jian-zhong.Investigation of heat treatment of a 6013 aluminium type alloy[J].Aerospace Materials&Technology,1999,29(1):42-45+60.
• [18]张允康,许晓静,罗勇,等.Al-Zn-Mg-Cu系合金微合金化的研究现状与展望[J].热加工工艺,2012,41(6):10-13.ZHANG Yun-kang,XU Xiao-jing,LUO Yong,et al.Research status and prospect of micro-alloying of Al-Zn-Mg-Cu alloy[J].Hot Working Technology,2012,41(6):10-13.
• [19]Soubeyroux J L,Puech S.Phases formation during heating of Mg-Cu-Ag-Y bulk metallic glasses[J].Journal of Alloys and Compounds,2010,495(2):330-333.
• [20]Kannan M B,Raja V S.Enhancing stress corrosion cracking resistance in Al-Zn-Mg-Cu-Zr alloy through inhibiting recrystallization[J].Engineering Fracture Mechanics,2010,77(2):249-256.
• [21]林光磊.6063铝合金型材维氏硬度与强度的线性关系[J].轻合金加工技术,2002,30(1):29-31.LIN Guang-lei.Linear Relationship between Vickers-hardness and Strength of 6063 Aluminium Alloy Profile[J].Light Alloy Fabrication Technology,2002,30(1):29-31.
• [22]韩俊.2524耐热铝合金板材轧制成形及力学行为研究[D].柳州:广西科技大学,2015.
• [23]周炜.Fe系、Zr系非晶变质Al-Cu、Al-Si合金的组织与力学性能[D].吉林:吉林大学,2015.
• [24]周学浩,孙有平,张扬扬,等.固溶时效对7055铝合金组织和性能的影响[J].广西科技大学学报,2016,(2):81-86.ZHOU Xue-hao,SUN You-ping,ZHANG Yang-yang,et al.Effects of solution treatment and aging process on mechanical properties of 7055 aluminum alloy[J].Journal of Guangxi University of Science and Technology,2016,(2):81-86.
• [25]王东,马宗义.固溶处理后冷轧变形7050铝合金时效工艺研究[J].金属学报,2010,46(5):581-588.WANG Dong,MA Zong-yi.Investigation of post-cold rolling aging processes on solutionized 7050 aluminum alloy[J].Acta Metallurgica Sinica,2010,46(5):581-588.

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