Die soldering of die castings is a serious problem in the aluminum casting industry. The precise mechanism, the influence of the alloy composition, and the options for prevention have not yet been fully elaborated. A well-established solution for alloys with low iron content is the addition of manganese. However, up to 0.8 wt.% is necessary, which increases the amount of brittle phases in the material and consequently reduces ductility. This presentation shows the results from immersion tests with 1.2343 tool steel and a hypoeutectic AlSi-alloy with Mn, Mo, and Cr additions to systematically investigate the formation of die soldering, how to effectively prevent it and simultaneously maintain high mechanical properties.

Language: English

Speaker: Marius Kohlhepp, Reasearch Associate at FAU Erlangen-Nürnberg / Audi AG