Investigation of the Phase Formation of AlSi-Coatings for Hot Stamping of Boron Alloyed Steel

Journal Article · Mon Jan 17 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3552543· OSTI ID:21510193

Veit, R; Kolleck, R ^[1]; Hofmann, H; Sikora, S ^[2]

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1. Graz University of Technology, Institute Tools and Forming, Inffeldgasse 11, 8010 Graz (Austria)
2. ThyssenKrupp Steel Europe AG, Eberhardstrasse 12, 44145 Dortmund (Germany)

Hot stamping of boron alloyed steel is gaining more and more importance for the production of high strength automotive body parts. Within hot stamping of quenchenable steels the blank is heated up to austenitization temperature, transferred to the tool, formed rapidly and quenched in the cooled tool. To avoid scale formation during the heating process of the blank, the sheet metal can be coated with an aluminium-silicum alloy. The meltimg temperature of this coating is below the austenitization temperature of the base material. This means, that a diffusion process between base material and coating has to take place during heating, leading to a higher melting temperature of the coating.In conventional heating devices, like roller hearth furnaces, the diffusion process is reached by relatively low heating rates. New technologies, like induction heating, reach very high heating rates and offer great potentials for the application in hot stamping. Till now it is not proofed, that this technology can be used with aluminum-silicon coated materials. This paper will present the results of comparative heating tests with a conventional furnace and an induction heating device. For different time/temperature-conditions the phase formation within the coating will be described.

• OSTI ID: 21510193
• Journal Information: AIP Conference Proceedings, Vol. 1315, Issue 1; Conference: AMPT2010: International conference on advances in materials and processing technologies, Paris (France), 24-27 Oct 2010; Other Information: DOI: 10.1063/1.3552543; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
BORON
BORON ALLOYS
COATINGS
DIFFUSION
ELECTRON MICROSCOPY
HEATING
HEATING RATE
INDUCTION
INDUCTION FURNACES
MELTING POINTS
QUENCHING
SILICON
STEELS
ALLOYS
CARBON ADDITIONS
ELECTRIC FURNACES
ELEMENTS
FURNACES
IRON ALLOYS
IRON BASE ALLOYS
METALS
MICROSCOPY
PHYSICAL PROPERTIES
SEMIMETALS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT ALLOYS
TRANSITION TEMPERATURE