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Title: Influence Of Tool Geometry, Tool Coating And Process Parameters In Thixoextrusion Of Steel

Journal Article · · AIP Conference Proceedings
DOI:https://doi.org/10.1063/1.2729673· OSTI ID:21056974
;  [1]; ;  [2]
  1. Institute of Metal Forming, RWTH Aachen University, Aachen (Germany)
  2. Surface Engineering Institute, RWTH Aachen University, Aachen (Germany)

Thixoextrusion could become one possibility to enlarge the complexity of extruded profiles made of steel. Accordingly semi-solid extrusion experiments of X210CrW12 tool steel using round dies of approximately 15 mm diameter were performed in order to achieve first information concerning possible process windows and process limits. For liquid fractions between 38% and 10%, extrusion press velocities from 10 mm/s to 50 mm/s and dies with novel PVD-coatings no complete solidification during extrusion was achieved. However the collected pieces of the extruded bars showed a fine and evenly distributed globular microstructure.

OSTI ID:
21056974
Journal Information:
AIP Conference Proceedings, Vol. 907, Issue 1; Conference: 10. ESAFORM conference on material forming, Zaragoza (Spain), 18-20 Apr 2007; Other Information: DOI: 10.1063/1.2729673; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
Country of Publication:
United States
Language:
English