Paper Title:
Numerical Modeling of Extrusion Welding in Magnesium Alloys
  Abstract

Solid-state welding takes place during the extrusion of hollow shapes and tubes made from selected metals such as aluminum and magnesium and their alloys. DEFORMTM is one of the most frequently used FEM software packages to analyze the metal flow in deformation processes. However, it has some limitations while applied to study the extrusion welding. The 2D and 3D versions of DEFORMTM cannot determine if extrusion welding takes place in a port-hole die. This limitation is a result of a lack of ability to transfer the localized deformation conditions to a judgment about a good or poor weld. In this work, a new modeling method has been proposed to obtain the localized information at the extrusion welding seam. A so-called pressure plate was virtually inserted in the position of the extrusion welding seam, which plays a role of a sensor and has recorded all the information at the given seam during the entire extrusion process. Analytical methods have been utilized to study the data collected from this sensor to evaluate the probability of the formation of the sound extrusion welding seam. The generated results have been used to verify Plata & Piwnik extrusion welding criterion and can be implemented into existing extrusion models to achieve better prediction of weld integrity.

  Info
Periodical
Edited by
Luca Tomesani and Lorenzo Donati
Pages
159-171
DOI
10.4028/www.scientific.net/KEM.491.159
Citation
Y. Xu, W. Z. Misiolek, "Numerical Modeling of Extrusion Welding in Magnesium Alloys", Key Engineering Materials, Vol. 491, pp. 159-171, 2012
Online since
September 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jung Min Lee, Byung Min Kim, Chung Gil Kang
487
Authors: Matthias Kammler
Abstract:A characteristic feature of extrusion processes is the formation of a shear zone, which separates the deformation zone and the dead metal...
221
Authors: Lei Cheng, Shui Sheng Xie, You Feng He, Guo Jie Huang, Yao Fu
Modeling, Analysis and Simulation of Manufacturing Processes
Abstract:FEM simulation of aluminum profiles in porthole die extrusion process using Lagrange mesh description will inevitably bring mesh...
290
Authors: Martin Schwane, Thomas Kloppenborg, Andreas Reeb, Nooman Ben Khalifa, Alexander Brosius, Kay André Weidenmann, A. Erman Tekkaya
Extrusion and Drawing
Abstract:The accurate simulation and the optimization of extrusion processes can be a helpful technique to ensure producibility of complex aluminum...
517
Authors: Dong Nan Huang, Yu Ning, Fang Lei Shao
Abstract:In this paper, in order to optimize the extrusion die action and to control quality of an industrial large Al-profile, the effects of die...
268