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On the effect of Temperature Cycling on the coating of a pack aluminized low alloyed steel (13 CrMo 44)
Author(s) -
Uihlein Th.,
Eggeler G.,
Maier H. J.
Publication year - 1987
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.19870180711
Subject(s) - materials science , temperature cycling , metallurgy , coating , thermal shock , corrosion , diffusion , high temperature corrosion , composite material , thermal , thermodynamics , physics
Coated pack aluminized low alloyed steels are known for their good resistance against high temperature corrosion up to 700 °C, where diffusion stability is still sufficient. In typical high temperature applications, coating and substrate are subjected to thermal fatigue. In this study the metallurgical stability of a coated, pack aluminized, low alloyed steel is reported. The specimens were cyclically quenched from 700 °C to room temperature or liquid nitrogen temperature respectively, to assess the importance of thermal shock severity on the kinetic of degradation. In particular, crack initiation and growth were studied. The dependence of microcrack densities upon numbers of cycles, cooling rates and specimen geometry is reported.