Effects of grain size, cold working, and surface finish on the metal-dusting resistance of steels

The presence of easy-diffusion paths is very important for fast formation or healing of a protective Cr-rich oxide scale for resistance of chromia-forming steels against metal dusting. Such easy-diffusion paths, grain boundaries, sub-boundaries, and dislocations are provided by a fine-grain microstr...

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Published inOxidation of metals Vol. 50; no. 3-4; pp. 241 - 254
Main Authors GRABKE, H. J, MÜLLER-LORENZ, E. M, STRAUSS, S, PIPPEL, E, WOLTERSDORF, J
Format Journal Article
LanguageEnglish
Published Heidelberg Springer 01.10.1998
Subjects
Applied sciences
Cleaning. Degreasing. Pickling
Exact sciences and technology
Metals. Metallurgy
Production techniques
Surface treatment
Oxide layer
Machining
Shot peening
Polishing
Steel
Experimental study
Surface treatment
Grain boundary
Oxide scale
Chromium oxide
Surface preparation
Oxidation
Diffusion
Microstructure
Protective coatings
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Summary:The presence of easy-diffusion paths is very important for fast formation or healing of a protective Cr-rich oxide scale for resistance of chromia-forming steels against metal dusting. Such easy-diffusion paths, grain boundaries, sub-boundaries, and dislocations are provided by a fine-grain microstructure, cold and /or surface working--polishing, grinding, machining, sand blasting. Their importance and effectiveness are demonstrated by various laboratory results and also by a failure case and their appearance is shown by TEM studies on ground steel specimens. Materials include alloy 800, 18Cr-8Ni steel, alloy 690, 304 steel, 310 steel, P91 steel, 10CrMo9 10 steel and 12CrMoV steel.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0030-770X
1573-4889
DOI:10.1023/A:1018888321213