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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 16a
SUMMARY:Investigation of the impact of different coatings strengths in AlSi coated boron-manganese steel on the tribological behavior in strip drawing tests
DESCRIPTION:Energy conservation and overall vehicle efficiency has been steadily gaining importance in the automotive sector over the years, especially with the technological switch to electrically powered vehicles. Lightweight parts are therefore required to provide safety relevant components with reduced part weight for the automobile while at the same time not compromising in aspects of passenger security. Hot stamping has proven itself to be a suitable process for the generation of automotive components, which meet the contrary requirements by improving mechanical properties and thereby passenger safety while at the same time providing lowered part weight through reduced sheet thickness. Due to increased forming temperatures above 850 °C, the usage of lubricants is not yet viable for hot stamping. To prevent decarburization and scale formation an additional aluminium-silicon based coating is applied to the boron manganese base material. The lack of lubricant usage combined with the coating material results in occurrences of high friction and wear at high temperatures. Previous investigations have shown that process parameters exhibit a significant influence on friction and wear in the process. Furthermore, the workpiece sided austenitization parameters as well as coating thickness have proven to influence the layer formation in the coating layer. Within this study the influence of the initial coating thickness on the friction and wear behaviour as well as interdependencies with other significant parameters is investigated. To this end, strip drawing tests are performed with both coating strengths and analysed in regard to the resulting tribological behaviour. The results of this study help in improving the understanding of the tribological conditions within the hot stamping process and to develop tailored measures for reducing tool and part wear.
CLASS:PUBLIC
DTSTART:20230614T141000
DTEND:20230614T143000
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