Aging kinetics of friction stir welded Al-Cu-Li-Mg-Ag and Al-Cu-Li-Mg alloys

被引：76
作者：
Sidhar, Harpreet [1 ]
Mishra, Rajiv S. [1 ]
机构：
[1] Univ North Texas, Dept Mat Sci & Engn, Ctr Frict Stir Proc, Denton, TX 76203 USA
来源：
MATERIALS & DESIGN | 2016年 / 110卷
基金：
美国国家科学基金会;
关键词：
Friction stir welding; Al-Cu-Li alloys; Differential scanning calorimetry; Transmission electron microscopy; Aging kinetics; MECHANICAL-PROPERTIES; ALUMINUM-ALLOYS; HEAT-TREATMENT; MICROSTRUCTURE; PRECIPITATION; EVOLUTION; AIRCRAFT; STRENGTH;
D O I：
10.1016/j.matdes.2016.07.126
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Friction stir welding under ambient cooling conditions, using tool rotation rate of 800 rpm and welding speed of 200 mm per minute was carried out on 2195 and 2199 Al-Li alloys. Underwater welding was also performed on both the alloys using a pool on the top of workpiece. Post weld heat treatment for various durations was conducted to study the effect of alloy chemistry on aging kinetics in various metallurgical zones developed during welding. Vickers microhardness, differential scanning calorimetry, and transmission electron microscopy results showed that low dislocation density after recrystallization in weld nugget results in delayed aging kinetics for both the alloys. Ag containing alloy 2195 showed faster aging response compared to Ag-free alloy 2199. Coarse precipitates at grain boundary and in the grain interior were found responsible for loss of non-recoverable strength in heat affected zone for both the alloys. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：60 / 71
页数：12
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共 33 条
  • [1] Process-microstructure-property correlations in Al-Li AA2199 friction stir welds
    Altenkirch, J.
    Steuwer, A.
    Withers, P. J.
    [J]. SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2010, 15 (06) : 522 - 527
  • [2] Effect of a pre or postweld heat treatment on microstructure and mechanical properties of an AA2050 weld obtained by SSFSW
    Avettand-Fenoel, M. -N.
    Taillard, R.
    [J]. MATERIALS & DESIGN, 2016, 89 : 348 - 361
  • [3] Secondary ageing in an aluminium alloy 7050
    Buha, J.
    Lumley, R. N.
    Crosky, A. G.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 492 (1-2): : 1 - 10
  • [4] Friction stir weld of 2060 Al-Cu-Li alloy: Microstructure and mechanical properties
    Cai, B.
    Zheng, Z. Q.
    He, D. Q.
    Li, S. C.
    Li, H. P.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 649 : 19 - 27
  • [5] THE EFFECT OF PLASTIC-DEFORMATION ON AL2CULI (T1) PRECIPITATION
    CASSADA, WA
    SHIFLET, GJ
    STARKE, EA
    [J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1991, 22 (02): : 299 - 306
  • [6] 2198 Al-Li plates joined by Friction Stir Welding: Mechanical and microstructural behavior
    Cavaliere, P.
    Cabibbo, M.
    Panella, F.
    Squillace, A.
    [J]. MATERIALS & DESIGN, 2009, 30 (09) : 3622 - 3631
  • [7] Microstructure mapping of a friction stir welded AA2050 Al-Li-Cu in the T8 state
    De Geuser, F.
    Malard, B.
    Deschamps, A.
    [J]. PHILOSOPHICAL MAGAZINE, 2014, 94 (13) : 1451 - 1462
  • [8] Recent developments in advanced aircraft aluminium alloys
    Dursun, Tolga
    Soutis, Costas
    [J]. MATERIALS & DESIGN, 2014, 56 : 862 - 871
  • [9] Advanced high-strength aluminum-base materials
    Fridlyander, IN
    Dobromyslov, AV
    Tkachenko, EA
    Senatorova, OG
    [J]. METAL SCIENCE AND HEAT TREATMENT, 2005, 47 (7-8) : 269 - 275
  • [10] Evolution of microstructure and mechanical properties in naturally aged 7050 and 7075 Al friction stir welds
    Fuller, Christian B.
    Mahoney, Murray W.
    Calabrese, Mike
    Micona, Leanna
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (09): : 2233 - 2240
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