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This work gives an insight in the transient softening at the fusion boundary of resistance spot welds of hot stamped steel 22MnB5. The development of the softened region was investigated for three different energy input concepts with short, middle, and long welding times; thereby, an experimental technique of interrupted spot welds combined with metallographic investigations and hardness measurements...
The effect of forced cooling using heat sinks on the mechanical properties and interpass waiting time of two-pass welds has been studied for a martensitic steel with a yield strength of 960 MPa when the interpass temperature was 100 °C. Cross-weld tensile and − 40 °C Charpy-V impact toughness properties were examined. The use of heat sinks is shown to result in a beneficial increase of the cross-weld...
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