Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 528, Issue 15, Pages 4947-4952Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.03.051
Keywords
Transmission electron microscopy (TEM); Drawing; Pearlitic steels; Hardness; High angle annular dark field (HAADF)
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Funding
- Ministry of Education, Science Technology [2009-0080290]
- National Research Foundation of Korea [2009-0080290] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Fractional dissociation of cementite was quantified as a function of strain by measuring the volume change of cementite in the pearlitic steel. The amount of carbon dissolved into the ferrite was estimated from the decrease of cementite volume, to correlate with the hardness in different strain level. The hardness showed linear relationship with the carbon dissolved into the ferrite matrix, which is believed to contribute in strengthening the drawn wire. Defects introduced from the deformation were believed to lower the energy barrier of cementite break-ups and to enhance the dissolution of carbon into ferrite. (C) 2011 Elsevier B.V. All rights reserved.
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