Spheroidisation of hypereutectoid state of nanostructured bainitic steel

Nanostructured bainite is extremely resistant to severe tempering making it difficult to reduce its hardness sufficiently to allow certain processing before heat treatment into its final state. An attempt is therefore made to introduce the divorced pearlite reaction that relies on the presence of pr...

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Bibliographic Details
Published inMaterials science and technology Vol. 30; no. 11; pp. 1282 - 1286
Main Authors Luo, D., Peet, M. J., Ooi, S. W., Yan, P., Yin, Z., Bhadeshia, H. K. D. H.
Format Journal Article
LanguageEnglish
Published London, England Taylor & Francis 01.09.2014
SAGE Publications
Taylor & Francis Ltd
Subjects
Austenite
Austenitic stainless steel
Bainitic steel
Cementite
Hardness
Heat treating
Hypereutectoid steel
Microstructure
Nanostructure
Nanostructured bainite
Pearlite
Softening heat treatments
Spheroidisation
Spheroidizing
Tempering
Spheroidisation
Nanostructured bainite
Hypereutectoid steel
Cementite
Softening heat treatments
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Summary:Nanostructured bainite is extremely resistant to severe tempering making it difficult to reduce its hardness sufficiently to allow certain processing before heat treatment into its final state. An attempt is therefore made to introduce the divorced pearlite reaction that relies on the presence of pro-eutectoid cementite in the austenite in order to produce a microstructure containing spheroidal cementite particles simply by continuous cooling from the two phase austenite and cementite field. It is demonstrated that dramatically reduced hardness values can be achieved using this method.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0267-0836
1743-2847
DOI:10.1179/1743284714Y.0000000545