About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Recent Developments in Biological, Structural and Functional Thin Films and Coatings
|
Presentation Title |
Selective Oxidation of Tool Surfaces – An Approach to Reduce Friction and Wear in Dry Metal Forming |
Author(s) |
Hans J. Maier, Bernd-Arno Behrens |
On-Site Speaker (Planned) |
Hans J. Maier |
Abstract Scope |
The avoidance of lubricants in metal forming processes is attractive for both economic as well as ecological reasons. In the present study, oxide layers formed on steel tool surfaces were used as separation layers and their potential with respect to dry metal forming was evaluated. In the experiments, high strength sheet metal was drawn in a wear test bench over both conventional as well as powder metallurgical tool steels. Light and electron microscopy were used to shed light on the wear mechanisms and characterize the wear behavior. The α-Fe2O3 oxide layer formed on the tool steel surface provided for a low friction coefficient and acted as an effective layer that reduced wear of the tool. Substantial difference in wear behavior between the conventional and the powder metallurgical steel grade were observed. These could be attributed to the different microstructural constituents present at the tool surface. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |