1 Ocak 2021 Dergi makalesi Açık Erişim

Erisir, Ersoy; Ayhan, Ismail Irfan; Guney, Caner; Alan, Emre; Durger, Nurten Basak; Un, Sibel

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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Erisir, Ersoy</dc:creator>
  <dc:creator>Ayhan, Ismail Irfan</dc:creator>
  <dc:creator>Guney, Caner</dc:creator>
  <dc:creator>Alan, Emre</dc:creator>
  <dc:creator>Durger, Nurten Basak</dc:creator>
  <dc:creator>Un, Sibel</dc:creator>
  <dc:date>2021-01-01</dc:date>
  <dc:description>In this work, the microstructural evolution and the phase transformations on a 0.22 wt.% carbon bainitic forging steel are investigated using a deformation dilatometer. The microstructure evolution was characterized using light microscope (LM), scanning electron microscope (SEM), transmission electron microscope (TEM), x-ray diffraction (XRD), and electron backscatter diffraction (EBSD). It was tried to predict the phase transformations via a continuous cooling transformation (CCT) diagram calculated by JMatPro using the results of prior austenite grain size measurement. In addition, critical temperatures were calculated using Thermo-Calc, JMatPro, and empirical formulations. Based on the dilatometric tests, hardness, and microstructural investigation, a deformation-CCT diagram was plotted. It was found that a bainitic microstructure can be obtained at cooling rates from 0.15 to 8 K/s. The microstructures varied from a mixture of bainite and blocky martensite/austenite islands at lower cooling rates to a bainitic ferrite with martensite at higher cooling rates. Finally, an industrially hot-forged sample cooled at 1 K/s was investigated. The microstructural evolution showed a microstructure of carbide-free bainitic ferrite along with film and island of retained austenite.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/238200</dc:identifier>
  <dc:identifier>oai:aperta.ulakbim.gov.tr:238200</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 30(5) 3458-3467</dc:source>
  <dc:title>Microstructure and Phase Transformations in High-Strength Bainitic Forging Steel</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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