Abstract
The present study describes for the characterization of the microstructure of dipping test samples with different Ti content. Over several years, an experimental test rig for fundamental metallurgical investigations of continuous casting processes has been further developed to facilitate higher cooling rates. This experiment is based on the principle of a dipping test under inert gas atmosphere inside a vacuum induction furnace. Recently, this apparatus has been equipped with a pyrometer in order to measure the temperature of the solidified sample during the subsequent cooling phase and also with a furnace in order to simulate different cooling strategies. The introduced dipping test simulator is a competitive possibility to reproduce casting parameters of the strip casting process as well as welding parameters of gas metal arc welding. The results indicate a significant change of the microstructure at different Ti contents, in the range 20 to 555 ppm, and a good comparability of the microstructure of dipping test samples and weld samples. These results are finally compared with results from literature and discussed with respect to the expected influence of titanium on the microstructure of the welded joint.
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