Mechanical Properties and Microstructural Characteristics of Friction Welded Dissimilar Joints of Aluminium Alloys

被引：3
作者：
Bharathi, S. R. Sundara [1 ]
Rajeshkumar, R. [1 ]
Rose, A. Razal [2 ]
Balasubramanian, V. [3 ]
机构：
[1] Natl Engn Coll, Dept Mech Engn, Kovilpatti 628503, Tamil Nadu, India
[2] SRM Univ, Dept Mech Engn, Madras 603203, Tamil Nadu, India
[3] Annamali Univ, Dept Mfg Engn, Ctr Mat Joining & Res CEMAJOR, Annamalainagar 608002, India
来源：
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2018年 / 71卷 / 01期
关键词：
Friction welding; Aluminium alloys; Tensile test; Microstructure and macrostructure; SEM fractograph; Microhardness;
D O I：
10.1007/s12666-017-1143-5
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Joining of similar and dissimilar combinations of aluminium alloys 2024 and 6061 were performed using friction welding technique. Microstructure, hardness and tensile properties of the joints were characterized. Microstructure of the alloy were found to change significantly across the joint such as fully deformed, partially deformed and undeformed regions due to deformation, frictional heat and alloy characteristics. Extensive fine grain size was observed in the fully deformed region and volume fraction of finer grains was higher in the alloy 2024 as compared to alloy 6061. Hardness was lower in the weld interface region of the similar joints of AA2024 and AA6061. The lower hardness in the dissimilar metal joint was observed in the heat affected zone of alloy 6061. The tensile strengths of the similar joints were 80 and 85% of respective base metal of alloys 2024 and 6061. The strength of the dissimilar metal joint was observed to be similar to the base metal strength of 6061 alloy. Tensile fracture occurred in the region of joints where lower hardness was observed. The maximum elongation were obtained in dissimilar joints of alloys and characterized by scanning electron microscope. It revealed deep dimple patterns unlike what was observed in similar joints.
引用
收藏
页码：91 / 97
页数：7
相关论文
共 16 条
  • [1] Microstructure and mechanical properties of alumina-6061 aluminum alloy joined by friction welding
    Fauzi, M. N. Ahmad
    Uday, M. B.
    Zuhailawati, H.
    Ismail, A. B.
    [J]. MATERIALS & DESIGN, 2010, 31 (02) : 670 - 676
  • [2] Precipitation microstructures in an AA6056 aluminium alloy after friction stir welding: Characterisation and modelling
    Gallais, C.
    Denquin, A.
    Brechet, Y.
    Lapasset, G.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 496 (1-2): : 77 - 89
  • [3] Microstructure and tensile properties of friction stir welded dissimilar AA6061-AA5086 aluminium alloy joints
    Ilangovan, M.
    Boopathy, S. Rajendra
    Balasubramanian, V.
    [J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2015, 25 (04) : 1080 - 1090
  • [4] Lohwasswer D, 2010, FRICTION STIR WELDIN
  • [5] Martukanitz R., 1990, ASM Handbook - Welding, Brazing, and Soldering, P528
  • [6] Friction welding of dissimilar pure metals
    Meshram, S. D.
    Mohandas, T.
    Reddy, G. Madhusudhan
    [J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2007, 184 (1-3) : 330 - 337
  • [7] Murali Mohan C H, 2014, INT J MATER RES, V105, P350
  • [8] Material flow and microstructure in the friction stir butt welds of the same and dissimilar aluminum alloys
    Ouyang, JH
    Kovacevic, R
    [J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2002, 11 (01) : 51 - 63
  • [9] Studies on friction stir welding of AA 2024 and AA 6061 dissimilar metals
    Sadeesh, P.
    Kannan, Venkatesh M.
    Rajkumar, V
    Avinash, P.
    Arivazhagan, N.
    Ramkumar, Devendranath K.
    Narayanan, S.
    [J]. INTERNATIONAL CONFERENCE ON MATERIALS FOR ADVANCED TECHNOLOGIES (ICMAT2013), SYMPOSIUM W - ADVANCED STRUCTURAL AND FUNCTIONAL MATERIALS FOR PROTECTION, 2014, 75 : 145 - 149
  • [10] Satyanarayana VV, 2005, J MATER PROCESS TECH, V160, P128, DOI [10.1016/j.jmatprotec.2004.05.017, 10.1016/J.JMATPROTEC.2004.05.017]
12