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Thermo‐mechanical homogenisation – application to HVOF thermal‐sprayed WC‐Co coatings
Author(s) -
Berthelsen Rolf,
Denzer Ralf,
Menzel Andreas
Publication year - 2014
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201410279
Subject(s) - thermal spraying , materials science , tungsten carbide , coating , metallurgy , residual stress , cobalt , cermet , quenching (fluorescence) , tungsten , thermal , composite material , ceramic , physics , quantum mechanics , meteorology , fluorescence
Hard material coatings are widely employed as wear protection for highly engrossed surfaces. For example, coatings consisting of tungsten carbide (WC) and cobalt (Co) are used for sheet metal forming tools. A relatively cost‐efficient coating technique is the high velocity oxygen fuel (HVOF) thermal spraying process which, as a trade‐off, induces a large amount of energy into the heterogeneous coating and the substrate. Hence, this leads to a complex transient, thermomechanically coupled problem. In order to predict the residual stresses during the quenching procedure, a two scale finite element framework is established wherein the scale bridging is performed by application of two different homogenisation approaches. (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)