Size-dependent mechanical properties in AA6082 tailor welded specimens
作者： Jun Liu , Li-Liang Wang , Junyi Lee , Ruili Chen , Omer El-Fakir
DOI: 10.1016/J.JMATPROTEC.2015.05.004
关键词: Friction stir welding 、 Metallurgy 、 Welding 、 Plasticity 、 Laser beam welding 、 Materials science 、 Perpendicular 、 Weld line 、 Ultimate tensile strength 、 Heat-affected zone
摘要: a b s t r c AA6082 tailor welded blanks (TWBs) produced using laser welding and friction stir were studied in this paper. The nominal mechanical properties of under uniaxial tension conditions characterised by evaluating the local base material, heat affected zone (HAZ) weld zone. Tensile specimens machined way that line lies perpendicular to loading axis. Three standard-sized containing varying ratios gauge region specimen used determine size-dependent TWBs. A post-weld strength prediction (PWSP) model, based on theories plasticity, has been developed estimate specimens. model can be predict yield global tensile behaviour Good agree- ments between modelling experimental results have obtained, with deviation less than 6%. It was found increased increasing dimensions phenomenon complex plastic deformation mechanisms cause phenomenon. © 2015 Authors. Published Elsevier B.V. This is an open access article CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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