Seam Welds in Hollow Profile Extrusion: Process Mechanics and Product Properties

Lorenzo Donati; Luca Tomesani

doi:10.4028/www.scientific.net/MSF.604-605.121

Paper Titles

Features on Grain-Structure Evolution during Asymmetric Rolling of Aluminium Alloys
p.77

New Model for Characterization of Dynamic Recrystallization and Prediction of Grain Size Applied to Two Wrought Magnesium Alloys
p.87

Developing Superplasticity in Metallic Alloys through the Application of Severe Plastic Deformation
p.97

Effect of Al₃(Sc,Zr) Particles on Tensile Properties of an Al-Zn-Mg-Cu-Sc-Zr Alloy
p.113

Seam Welds in Hollow Profile Extrusion: Process Mechanics and Product Properties
p.121

FeCrAl Alloys Produced by Roll-Bonding and Annealing of Al(RE)-Clad Stainless Steel: How Addition of Hf and Zr Affects their Oxidation Behaviour
p.133

Room Temperature Plastic Flow Localization in a Mn-Alloyed Austenitic Steel
p.139

Effects of Temperature and Sheet Thickness on Formability of AZ31 Magnesium Alloy
p.147

Consolidation of Amorphous Aluminum Alloy Powder by Equal Channel Angular Extrusion
p.155

HomeMaterials Science ForumMaterials Science Forum Vols. 604-605Seam Welds in Hollow Profile Extrusion: Process...

Seam Welds in Hollow Profile Extrusion: Process Mechanics and Product Properties

Abstract:

In this paper a review of several papers published on seam weld formation also by the authors is presented and discussed: the process mechanics is deeply investigated and several experimental results are related to process parameters by means of FEM simulations. The relation between die design and local welding parameters, such as contact pressure, temperature, time of contact, strain and strain rate paths is analyzed. In particular, by testing profiles extruded in different conditions, it was found that it is possible to find optimum processing conditions for a welded profile to behave like a not welded one. The possibility to adopt criteria for assessing the welding quality is finally discussed, together with its implementation directly inside process FEM codes.

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Periodical:

Materials Science Forum (Volumes 604-605)

Pages:

121-131

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.604-605.121

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Online since:

October 2008

Authors:

Lorenzo Donati, Luca Tomesani

Keywords:

AA6082, Damage Mechanics, Finite Element (FE) Simulation, Seam Weld, Solid State Bonding

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