New generations of high strength aluminium alloys are widely used in automotive industry. 7075 (AlZn5.5MgCu) is an aluminium alloy with zinc as the primary alloying element (according to EN 485-2 standard). The 7075 has outstanding strength properties, but the elongation is limited between 5 and 11%. This means an obstacle when this alloy is aimed to use in car body elements. The goal of the present research work is to analyse the weldability of this alloy through resistance spot welding (RSW) tests. Experiments are performed on 1 mm thick 7075 sheets in T6 condition with different surface pre-treatment methods and the weld lobe was determined for constant electrode force. A Tecna 8007 RSW equipment with a TE 550 control unit was applied, which has been recently developed with a tool for the application of post pressing force. The spot welded joints were examined by macro testing, tensile shear and hardness tests. The properties of RSW joint from 7075 were compared with the 6082 alloy.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Resistance Spot Welding of 7075 Aluminium Alloy


    Additional title:

    Lect.Notes Mechanical Engineering


    Contributors:

    Conference:

    Vehicle and Automotive Engineering ; 2018 ; Miskolc, Hungary May 23, 2018 - May 25, 2018



    Publication date :

    2018-05-10


    Size :

    15 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




    Resistance Spot Welding of 7075 Aluminium Alloy

    Dobosy, Ádám / Gáspár, Marcell / Török, Imre | TIBKAT | 2018


    Developments in characterization of resistance spot welding of aluminium

    Hao, M. / Osman, K.A. / Boomer, D.R. et al. | Tema Archive | 1996


    Dissimilar Resistance Spot Welding of Steel and Aluminium Alloy Using Ni Interlayer for Automobile Structure

    Shende, Deodatta / Chudasama, Gautam / Chauhan, Shiv et al. | SAE Technical Papers | 2023


    Fatigue Behaviour of 7075 T6 Aluminium Alloy in Aggressive Environments

    Agarwala, V. / Shafiq, B. / International Committee on Aeronautical Fatigue | British Library Conference Proceedings | 2002


    Expulsion in Resistance Spot Welding of AZ31B Magnesium Alloy

    Zhang, Z. D. / Wang, Y. R. / Li, D. Q. | British Library Conference Proceedings | 2007