Paper Titles
Constitutive Modeling of Stress-Strain Curves of IF Austenite
p.4202
Effect of the Annealing Conditions on the Microstructure and Mechanical Properties of a 0.04% C Al Killed Steel
p.4208
Effect of Cr on Strain Ageing Behaviour of Low Carbon Steel
p.4214
Study of the Development of Heterogeneous Grain Size in the Through-Thickness Direction of Hot Rolled ELC Steels
p.4220
Metal Dusting and Oxidation at 593 and 704°C
p.4226
A Physically Based Model for Bake-Hardening Steels and Dent Resistance
p.4232
Development of Low Carbon Boron Steel for Wire Drawing
p.4238
High-Temperature Phase Transitions and Mechanical Properties in Steel of Peritectic Composition
p.4243
Mechanism of Hydrogen Embrittlement of Austenitic Steels
p.4249

Metal Dusting and Oxidation at 593 and 704°C

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Abstract:

Experiments involving metal dusting in carbonaceous atmosphere and oxidation in air have been carried out at 593 and 704oC using T22, T91 and 800 alloy steels. The effect of Cr on these two processes can be understood because of their compositions. In general, the resistance to both metal dusting up to 1000 hours and oxidation up to 456 hours has been found to improve with increase in Cr content from 2.36 to 21.6%. However, mechanisms change from spalling to oxide scale in oxidation and from uniform metal dusting to pitting in metal dusting as the amount of Cr increases in these steels. Pitting corrosion shows higher C carbon concentration in the pits than at locations away from the pits. A detailed analysis has been performed to evaluate the scale and spalled materials in terms of oxide characterization using XRD, AES, SEM, EDS on SEM, optical microscopy and TEM.

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Periodical:

Materials Science Forum (Volumes 539-543)

Pages:

4226-4231

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.539-543.4226

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Online since:

March 2007

Authors:

S.K. Varma, Aditya Putrevu, Maduri Pasala, Z. Zeng, Ken Natesan

Keywords:

Energy Dispersive Spectroscopy, Metal Dusting, Oxidation, Oxide Scale, Scanning Electron Microscope (SEM), Steel

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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