The bonding conditions of the solid/liquid state diffusion process was predicted, based upon the temperature distribution at the interface of the SPCC/A5052 lap joint obtained by the boundary element analysis, using the fundamental solution for thermal conduction; laser welding experiments were then carried out, based upon this outcome. The results may be summarised as follows: 1) Bonding experiments were carried out, based upon the bonding conditions predicted by a prepared thermal conduction boundary element programme. Joints were made on this basis. This showed it is feasible to predict the welding conditions using analysis. 2) Implementation of the solid/liquid state diffusion type interface conditions facilitated the production of SPCC/A5052 lap joints. Furthermore, joints made with conditions of a 2.5 kW laser power and a 0.6 m/min welding speed indicated the maximum failure load and the value reached approximately 69% of the failure load assessed for the base metal (A5052) tensile strength. 3) Intermetallic compound layers were noted at the interfaces of joints obtained. The compositions of the intermetallic compounds are surmised to be identical, irrespective of the welding conditions. 4) The intermetallic compound layer thickness formed at the weld interface can be restrained to several mm by means of these techniques and welding can be realised. 5) It is surmised that the differences in the failure loads of joints made with each set of welding conditions are not caused by differences in the strength at the weld interface, but mainly by the differences of the bonded widths.


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    Titel :

    Laser welding of dissimilar metals aided by unsteady thermal conduction boundary element method analysis


    Beteiligte:
    Miyashita, Y. (Autor:in) / Mutoh, Y. (Autor:in) / Akahori, M. (Autor:in) / Okumura, H. (Autor:in) / Nakagawa, I. (Autor:in) / Jin-Quan, X. (Autor:in)

    Erschienen in:

    Welding International ; 19 , 9 ; 687-696


    Erscheinungsdatum :

    2005


    Format / Umfang :

    10 Seiten, 16 Bilder, 3 Tabellen, 29 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch