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Meeting Materials Science & Technology 2019
Symposium Advances in Zinc-coated Sheet Steel Processing and Properties
Presentation Title The Influence of Electrode Geometry on the Liquid Metal Embrittlement Cracking in Resistance Spot Welding of Advanced High Strength Steel
Author(s) Yeongdo Park, Siva Prasad Murugan
On-Site Speaker (Planned) Yeongdo Park
Abstract Scope The effect of electrode geometry and electrode type on the LME sensitivity are investigated with experimental and finite element method. Influence of the electrode type, as well as the specific geometric parameter on electrical-thermal-mechanical characteristics, and hence LME is studied commercial dome type and flat type electrodes were selected as electrode types tip diameter (d) and radius of curvature were varied experimentally and numerically see the individual effect of these parameters. Larger radius of curvature and tip diameter of radius type electrode enabled higher contact area at the E/S interface which in turn caused lower current density and contact pressure and higher heat dissipation. As a result, the temperature, tensile stress and liquefaction of zinc were reduced and hence LME cracking was decreased considerably.
Proceedings Inclusion? Definite: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Application of Machine Learning to the Development of New Zn-based Coatings with Low Melting Temperature for Automotive Steels
Development of a New Grade of Galvanized Direct Hot Press Hardenable Steel
Effect of Liquid Metal Embrittlement on Mechanical Behavior of Advanced High Strength Steel Spot Welds at Ambient and Low Temperatures
Influence of Treatment Regimes in the Conditions of SHS on the Development of Steel
P3-85: The Effect of Zn-Mg Interlayer on the Microstructure and Corrosion Resistance of PVD-processed Coatings
P3-86: Effect of the Microstructure Development on Cracking Phenomena in Hot-Dip Zn-Al-Mg Alloy Coatings on IF Steel
P3-87: Obtaining Zinc Coatings on a Sheet Steel in SHS Conditions
P3-88: Control of Zinc Coatings Obtained under SHS Conditions
P3-89: Study on the Environment-friendly Coating Technology for Hot-dip Galvanized Steel Sheet with High Humidity Resistant
The Effect of Coating Process on Liquid Zn-assisted Embrittlement of TRIP Steel
The Influence of Electrode Geometry on the Liquid Metal Embrittlement Cracking in Resistance Spot Welding of Advanced High Strength Steel

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