梁文杰,潘青林,何运斌

• 1:中南大学化学化工学院
• 2:中南大学材料科学与工程学院

摘要(Abstract)：

通过显微组织观察和室温拉伸实验,研究了固溶热处理制度和时效制度对含Sc的Al-Cu-Li-Zr合金拉伸力学性能与显微组织的影响。结果表明,适当提高固溶温度或延长固溶时间可以促进合金中过剩相的溶解,提高合金的强度和塑性;合金适宜的固溶-时效处理制度为530℃×1 h水淬+160℃×40 h时效,在此条件下,合金的抗拉强度、屈服强度和伸长率分别为490MPa、416 MPa和9.8%。T1相是合金的主要时效强化相。

关键词(KeyWords)： 含钪Al-Cu-Li-Zr合金;固溶;力学性能;显微组织

Abstract:

Keywords:

基金项目(Foundation): 国家“863”计划新材料资助项目(2006AA03Z523);; 中南大学博士后基金资助项目

作者(Author): 梁文杰,潘青林,何运斌

DOI: 10.13289/j.issn.1009-6264.2011.09.011

参考文献(References)：

• [1]Ilyushenko R V.Weldability of commercial aluminium-lithium alloys[J].Aluminium,1993,69(4):364-370.
• [2]Singh V,Prasad K S,Gokhale A A.Effect of minor Sc additions on structure,age hardening and tensile properties of aluminium alloy AA8090 plate[J].Scripta Materialia,2004,50:903-908.
• [3]王芝秀,郑子樵,李海.铝锂合金的微合金化及其作用机理[J].材料导报,2003,17(10):11-15.WANG Zhi-xiu,ZHENG Zi-qiao,LI Hai.Microalloying of Al-Li alloys and its mechanisms[J].Materials Review,2003,17(10):11-15.
• [4]尹登峰,郑子樵.铝锂合金研究开发的历史与现状[J].材料导报,2003,17(2):18-20YIN Deng-feng,ZHENG Zi-qiao.History and current status of aluminum-lithium alloys research and development[J].Materials Review,2003,17(2):18-20.
• [5]杨守杰,陆政,苏彬,等.铝锂合金研究进展[J].材料工程,2001(5):44-47.YANG Shou-jie,LU Zheng,SU Bin,et al.Development of aluminum-lithium alloys[J].Journal of Materials Engineering,2001(5):44-47.
• [6]陈石卿.俄罗斯的航空用铝合金的发展及其历史经验(二)[J].航空工程与维修,2001(4):29-33.CHEN Shi-qing.Russian aeronautical aluminium alloy development and its historical experience(Ⅱ)[J].Aviation Engineering and Maintenance,2001(4):29-33.
• [7]Yoshimura R,Konno T J,Abe E,et al.Transmission electron microscopy study of the evolution of precipitates in aged Al-Li-Cu alloys:theθ’andT1 phases[J].Acta Materialia,2003,51:4251-4266.
• [8]Huang B P,Zheng Z Q.Independent and combined roles of trace Mg and Ag additions in properties precipitation process and precipitation kineticsof Al-Cu-Li-(Mg)-(Ag)-Zr-Ti alloys[J].Acta Mater,1998,46(12):4381-4393.
• [9]Iwamura S,Nakayama M,Miura Y,Coherency between Al3Sc precipitate and the matrix in Al alloys containing Sc[J].Mater Sci Forum,2002,396-402:1151-1156.
• [10]Milman Yu V,Lotsko D V,Sirko O I.Sc effect of improving mechanical properties in aluminum alloys[J].Materials Science Forum,2000,331-337:1107-1112.
• [11]Yin Zhi-min,Pan Qing-lin,Zhang Yong-hong,et al.Effect of minor Sc and Zr on the microstructure and mechanical properties of Al-Mg basedalloys[J].Materials Science and Engineering A,2000,280:151-155.
• [12]谢绍俊.CP276铝-锂合金的固溶温度研究[J].轻合金加工技术,2001,29(1):35-37.XIE Shao-jun.Study on solid solution treatment temperature for Al-Li alloy CP276[J].Light Alloy Fabrication Technology,2001,29(1):35-37.
• [13]卫英慧,贾连锁,胡兰青,等.Al-Li-Cu-Zr合金中T1相结构、形核和长大机制研究[J].稀有金属材料与工程,2003,32(6):428-432.WEI Ying-hui,JIA Lian-suo,HU Lan-qing,et al.Study on T1 phase structure,nucleation and growth mechanism in Al-Li-Cu-Zr alloy[J].RareMetal Materials and Engineering,2003,32(6):428-432.
• [14]李仁顺,王佐义,等.2091Al-Li合金的晶界无析出带的形成及其对应力腐蚀的影响[J].金属学报,1994,30(10):487-490.LI Ren-shun,WANG Zuo-yi,et al.Formation of grain boundary precipitate free zones in 2091 Al-Li alloy and its effect on stress corrosion cracking[J].Acta Metallurgica Sinica,1994,30(10):487-490.
• [15]Okuda H,Ochiaa S.The effects of solute and vacancy depletion on the formation of procipitation-free zone in a model binary examined by monte caylosimuiation[J].Mate Trans,2004,45(5):1455-1462.
• [16]Pardoen T,Dumont D,Deschamps A,et al.Grain boundary versus transgranular ductile failure[J].Journal of the Mechanics and Physics of Solids,2003,51(4):637-665.
• [17]Lee Y S.Microstructures in over-aged Al-Cu-Li-Mg-Ag alloys[J].Journal of Materials Science Letters,1998,17(14):1161-1164.

文章评论(Comment)：