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Author Prasad, M. S. ♦ Ray, Amitava ♦ Dhua, S. K. ♦ Avtar, R. ♦ Jha, S.
Source SpringerLink
Content type Text
Publisher Springer-Verlag
File Format PDF
Copyright Year ©2004
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Chemistry & allied sciences
Subject Keyword roll breakage ♦ spalling ♦ tandem mill ♦ wear resistance ♦ work-roll ♦ Materials Science ♦ Tribology, Corrosion and Coatings ♦ Characterization and Evaluation of Materials ♦ Mechanics ♦ Structural Mechanics ♦ Quality Control, Reliability, Safety and Risk
Abstract The microstructural features of prematurely spalled tandem mill work-rolls were examined in an attempt to correlate microstructure with spalling behavior and roll performance. Spalled samples were collected from work-rolls that had shown variations in roll life under similar conditions of mill usage. Optical microscopy revealed that a fine dispersion of spheroidal carbides in a matrix of tempered martensite was conducive to superior performance in terms of roll life (i.e., tonnage rolled), and that coarse angular and irregular shape carbides were detrimental to roll life.Image analysis of roll microstructures indicated that small carbide size, large carbide volume fraction, and high carbide count were characteristic of higher-life rolls, and that large carbide size, low carbide volume fraction, and less carbide density were typical of lower-life rolls. The carbides in both types of microstructure were M$_{7}$C$_{3}$ type.
ISSN 15477029
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2004-01-01
Publisher Place New York
e-ISSN 18641245
Journal Journal of Failure Analysis and Prevention
Volume Number 4
Issue Number 3
Page Count 6
Starting Page 67
Ending Page 72

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Source: SpringerLink