The low temperature aluminising kinetics of hot-work tool steels

Matijević, Božidar and Kumić, Ivan and Belić, Tomislav (2012) The low temperature aluminising kinetics of hot-work tool steels. = The low temperature aluminising kinetics of hot-work tool steels. HTM Journal of Heat Treatment and Materials, 67 (2). pp. 133-139. ISSN 0341-101X. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. . .

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Conventional aluminising procedures are mostly conducted at temperatures well above 900 °C, and can last for hours. When applied to hot-work tool steels, aluminising has to be done at notably lower temperatures in order to prevent grain growth and carbide formation, and to improve creep resistance. The kinetics of aluminium coating formation on hot-work tool steels was studied in the temperature range of 550-610 °C. The pack Al content was varied from 5-15 wt.- and aluminizing time from 1-9 hours. The halide activator AlCl3 was applied. A series of statistically designed experiments were conducted to determine how key process factors influence the aluminide coating formation. A Box-Behnken experimental design was used to evaluate three process factors at three levels. The microstructures of coated samples were analysed by a scanning electron microscope (SEM). Glow Discharge Optical Spectroscopy (GDOS) and energy-dispersive X-ray spectroscopy (EDX) were employed to investigate element distributions in the coating layer. © 2012 Carl Hanser Verlag, München.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): Al content; Aluminide coating; Aluminising; Box-Behnken experimental design; Carbide formation; Coated sample; Coating layer; Designed experiments; Element distribution; Energy dispersive x-ray spectroscopy; Glow discharge optical spectroscopy; Halide activators; Hot-work tool steel; Key process; Low temperatures; Process factor; Temperature range; Design experiments; Carbides; Coatings; Design of experiments; Energy dispersive spectroscopy; Grain growth; Scanning electron microscopy; Tool steel
Divisions: 1000 Department of Materials > 1020 Chair of Heat Treatment and Surface Engineering
Indexed in Web of Science: No
Indexed in Current Contents: No
Citations SCOPUS: 0 (14.03.2016.)
Date Deposited: 28 Apr 2015 11:55
Last Modified: 14 Mar 2016 13:11

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