Effect of Prior-Austenite Grain Size and Transformation Temperature on the Nodule Size of Microalloyed Hypereutectoid Steels

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DOIResolve DOI: http://doi.org/10.1007/s11661-005-0102-7
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TypeArticle
Journal titleMetallurgical and Materials Transactions
ISSN1543-1940
Volume36
Issue9
Pages22972305; # of pages: 9
SubjectHypereutectoid steels; Transformation Temperature; Prior Austenite grain size
AbstractThe effect of prior-austenite grain size and transformation temperature on nodule size and colony size of hypereutectoid steels containing 1 pct carbon with different levels of vanadium and silicon was investigated. Specimens of the various steels were thermally processed at various temperatures ranging from 900 °C to 1200 °C and transferred to salt bath conditions at 550 °C, 580 °C, and 620 °C to examine the structural evolution of pearlite. The heat-treatment work showed that for only the hypereutectoid steel without vanadium there was a continuous grain boundary cementite network, the thickness of which increased with increasing reheat temperature. Analysis of the thermally processed hypereutectoid steels also indicated that the prior-austenite grain size and transformation temperature controlled the nodule size, while the colony size was dependent on the latter only.
Publication date
AffiliationNational Research Council Canada; NRC Institute for Aerospace Research
Access conditionavailable
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Peer reviewedNo
NRC numberAMTC-2005-0090
NPARC number8927891
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Record identifier16af6909-4c03-4779-b1c1-b3b048fb2780
Record created2009-04-23
Record modified2016-05-09
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