Avoidance of liquid metal embrittlement during resistance spot welding by heat input dependent hold time adaption
Source abstract
Abstract
Liquid metal embrittlement (LME) cracking can occur during resistance spot welding (RSW) in zinc-coated advanced high-strength steels (AHSS) for automotive production. In this study, a methodological variation of hold time is performed to investigate the process-related crack influence factors. A combination of numerical and experimental investigations confirms, that the extent of heat dissipation and re-heating of the sheet surface can be influenced and thus the degree of crack formation can be controlled in a targeted manner by the parameterisation of the hold time. The temperature and stress history of crack-free and crack-afflicted spot welds are analysed and a conclusion on the borders defining the LME active region is derived.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Aluminum Alloy Microstructure Properties · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratory for Material and Joining Technology (LWF), Paderborn, Germany
Fraunhofer Institute for Production Systems and Design Technology (IPK), Berlin, Germany
Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
Institute for Machine Tools and Factory Management (IWF), Technical University of Berlin, Berlin, Germany
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