马云龙,黄诚,李劲风,刘丹阳,叶志豪,汪洁霞,郑子樵

• 1:北京宇航系统工程研究所
• 2:中南大学材料科学与工程学院

摘要(Abstract)：

以5.2 mm厚2195-T8铝锂合金为基础,进行了重固溶及后续152℃的T8(预变形3%~6%)再时效处理,研究了其微观组织与拉伸性能。结果表明,重固溶处理未显著改变2195铝锂合金的晶粒组织,仍然保持为拉长的扁平状(带状)晶粒组织态。合金的主要时效强化相为T1相(Al_2Cu Li)和θ'相(Al_2Cu)。T1相数量随预变形量增大而明显增加,而峰时效后θ'相数量及尺寸随预变形量增加呈降低的趋势。合金中T1相分数随时效时间延长而增加并主要沿长度方向长大,而峰时效后θ'相随时效时间延长逐渐减少。重固溶T8再时效处理未明显损害2195铝锂合金拉伸性能。

关键词(KeyWords)： 铝锂合金;重固溶;再时效;微观组织;拉伸性能

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划项目(2013AA032401)

作者(Author): 马云龙,黄诚,李劲风,刘丹阳,叶志豪,汪洁霞,郑子樵

DOI: 10.13289/j.issn.1009-6264.2016.08.011

参考文献(References)：

• [1]Starke Jr E A.Aerospace materials for future technologies[J].Journal of The Japan Institute of Light Metals,2001,51:77-85.
• [2]Warner.Recently-developed aluminium solutions for aerospace applications[J].Materials Science Forum,2006,519/521:1271-1278.
• [3]Fridlyander I J.Aluminum alloys in aircraft in the periods of 1970-2000 and 2001-2015[J].Metal Sci and Heat Treatment,2001,43(1/2):6-10.
• [4]王浩军,史春玲,贾志强,等.铝锂合金的发展及研究现状[J].热加工工艺,2012,41(14):82-85.WANG Hao-jun,SHI Chun-ling,JIA Zhi-qiang,et al.Development and current status of aluminum-lithium alloy[J].Hot Working Technology,2012,41(14):82-85.
• [5]郑子樵,李劲风,陈志国,等.铝锂合金的合金化与微观组织演化研究[J].中国有色金属学报,2011,21(10):2337-2349.ZHENG Zi-qiao,LI Jin-feng,CHEN Zhi-guo,et al.Alloying and microstructural evolution of Al-Li alloys[J].The Chinese Journal of Nonferrous Metals,2011,21(10):2337-2349.
• [6]Rioja R J,Liu J.The evolution of Al-Li base products for aerospace and space applications[J].Metallurgical&Materials Transactions A,2012,43(9):3325-3337.
• [7]李劲风,郑子樵,陈永来,等.铝锂合金及其在航天工业上的应用[J].宇航材料工艺,2012,42(1):13-19.LI Jin-feng,ZHENG Zi-qiao,CHEN Yong-lai,et al.Al-Li alloys and their application in aerospace industry[J].Aerospace Materials and Technology,2012,42(1):13-19.
• [8]Biliyar N Bhat.Materials,processes and manufacturing in Ares I-Upper Stage:Integration with systems design and development[R].National Aeronautics and Space Administration,USA.2008.
• [9]尚勇,李建康,张立武.重固溶再时效处理对7175铝合金组织和性能的影响[J].热加工工艺,2005(5):35-38.SHANG Yong,LI Jian-kang,ZHANG Li-wu.Effect of re-solution re-aging on microstructure and properties of 7175 aluminum alloy[J].Hot Working Technology,2005(5):35-38.
• [10]李海,郑子樵,王芝秀.过时效-重固溶-再时效处理对7055铝合金组织与性能的影响[J].材料热处理学报,2004,25(3):57-61.LI Hai,ZHENG Zi-qiao,WANG Zhi-xiu.Effect of over-ageing and re-solution and re-ageing treatment on microstructures and properties of 7055 Al alloy[J].Transactions of Materials and Heat Treatment,2004,25(3):57-61.
• [11]尚勇,张立武.重固溶再双级时效处理对7175铝合金力学性能和微观组织的影响[J].固体火箭技术,2006,29(3):225-228.SHANG Yong,ZHANG Li-wu.Effects of resolution and reaging treatment on mechanical properties and microstructure of 7175 aluminum alloy[J].Journal of Solid Rocket Technology,2006,29(3):225-228.
• [12]尚勇,张立武,李建康.重固溶再多级时效处理对7175铝合金组织和性能的影响[J].热加工工艺,2005(7):41-43.SHANG Yong,ZHANG Li-wu,LI Jian-kang.Effects of re-solution and re-aging on microstructural and mechanical properties 7175 Aluminum[J].Hot Working Technology,2005(7):41-43.
• [13]Tsivoulas D,Prangnell P B.The effect of Mn and Zr dispersoid-forming additions on recrystallization resistance in Al-Cu-Li AA2198 sheet[J].Acta Materialia,2014,77:1-16.
• [14]Gable B M,Zhu A W,Csontos A A,et al.The role of plastic deformation on the competitive microstructural evolution and mechanical properties of a novel Al-Li-Cu-X alloy[J].Journal of Light Metals,2001(1):1-14.
• [15]Kumar K S,Brown S A,Pickens J R.Microstructural evolution during aging of an Al-Cu-Li-Ag-Mg-Zr alloy[J].Acta Materialia,1996,44:1899-1915.
• [16]袁志山,陆政,谢优华,等.预变形对高强Al-Cu-Li-X铝锂合金组织和性能影响[J].稀有金属材料与工程,2007,36(3):493-496.YUAN Zhi-shan,LU Zheng,XIE You-hua,et al.Effect of plastic deformation on microstructure and properties of high strength Al-Cu-Li-X aluminumlithium alloy[J].Rare Metal Materials and Engineering,2007,36(3):493-496.
• [17]Huang B P,Zheng Z Q.Precipitation kinetics of an Al-4.01Cu-1.11Li-0.39Mg-0.19Zr-0.11Ti alloy[J].Scripta Materialia,1998,38(4):611-616.

文章评论(Comment)：