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Author Sarkar, Biswajit ♦ Jha, B. K. ♦ Kumar, Vid ♦ Chaudhuri, S. K. ♦ Jha, Sudhaker
Source SpringerLink
Content type Text
Publisher Springer-Verlag
File Format PDF
Copyright Year ©2005
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Chemistry & allied sciences ♦ Technology ♦ Engineering & allied operations
Subject Keyword grain refinement ♦ single-pass rolling ♦ thermomechanical processing ♦ Characterization and Evaluation of Materials ♦ Materials Science ♦ Tribology, Corrosion and Coatings ♦ Quality Control, Reliability, Safety and Risk ♦ Engineering Design
Abstract Ferrite grain sizes of the order of 1 to 2 µm were obtained by optimizing the strain, strain rate, the stage of cooling, as well as the cooling rate during hot rolling of 0.15C-0.92Mn-0.01Si-0.036S-0.04P-0.013Nb steel. It was found that in single-pass rolling of a 10 mm plate to a thickness of 3.5 mm with an entry temperature of 800 °C, and early-stage water cooling, very fine grains of ferrite (1–2 µm) were formed at the surface and in subsurface regions. It was also found that the threshold level of reduction during rolling, which is required for the refinement of ferrite grains, is >50%. The 3.5 mm thermomechanically processed plate was found to possess very attractive mechanical properties in terms of the yield strength (485 MPa), the ultimate tensile strength (UTS) (763 MPa), and particularly the yield strength to ultimate tensile strength (YS/UTS) ratio (0.63). This combination of properties can be explained on the basis of the composite microstructure consisting of ferrite and bainite that was obtained as a result of the thermomechanical processing.
ISSN 10599495
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2005-01-01
Publisher Place New York
e-ISSN 15441024
Journal Journal of Materials Engineering and Performance
Volume Number 14
Issue Number 2
Page Count 5
Starting Page 219
Ending Page 223

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Source: SpringerLink