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  4. Investigation of liquid metal embrittlement of dual phase steel joints by electro-thermomechanical spot-welding simulation
 
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2019
  • Zeitschriftenaufsatz

Titel

Investigation of liquid metal embrittlement of dual phase steel joints by electro-thermomechanical spot-welding simulation

Abstract
A 3D electro-thermomechanical model is established in order to investigate liquid metal embrittlement. After calibration to a dual phase steel of the 1000 MPa tensile strength class, it is used to analyse the thermo-mechanical system of an experimental procedure to enforce liquid metal embrittlement during resistance spot welding. In this procedure, a tensile stress level is applied to zinc coated advanced high strength steel samples during welding. Thereby, liquid metal embrittlement formation is enforced, depending on the applied stress level and the selected material. The model is suitable to determine and visualise the corresponding underlying stresses and strains responsible for the occurrence of liquid metal embrittlement. Simulated local stresses and strains show good conformity with experimentally observed surface crack locations.
Author(s)
Frei, Julian
Fraunhofer-Institut fĂĽr Produktionsanlagen und Konstruktionstechnik IPK
Biegler, Max
Fraunhofer-Institut fĂĽr Produktionsanlagen und Konstruktionstechnik IPK
Rethmeier, Michael
Fraunhofer-Institut fĂĽr Produktionsanlagen und Konstruktionstechnik IPK
Böhne, Christoph
Meschut, Gerson
Zeitschrift
Science and technology of welding and joining
Thumbnail Image
DOI
10.1080/13621718.2019.1582203
Language
Englisch
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IPK
Tags
  • RSW

  • LME

  • advanced high strengt...

  • zinc coated steel

  • testing method

  • dual phase steel

  • Cracking

  • electro-thermomechnic...

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