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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{
  "@context": "https://schema.org/", 
  "@id": 238200, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "Kocaeli Univ, Dept Met & Mat Engn, Kocaeli, Turkey", 
      "name": "Erisir, Ersoy"
    }, 
    {
      "@type": "Person", 
      "affiliation": "CEMTAS Celik Makina Sanayi & Ticaret AS, R&D Ctr, Bursa, Turkey", 
      "name": "Ayhan, Ismail Irfan"
    }, 
    {
      "@type": "Person", 
      "affiliation": "CEMTAS Celik Makina Sanayi & Ticaret AS, R&D Ctr, Bursa, Turkey", 
      "name": "Guney, Caner"
    }, 
    {
      "@type": "Person", 
      "affiliation": "CEMTAS Celik Makina Sanayi & Ticaret AS, R&D Ctr, Bursa, Turkey", 
      "name": "Alan, Emre"
    }, 
    {
      "@type": "Person", 
      "affiliation": "CEMTAS Celik Makina Sanayi & Ticaret AS, R&D Ctr, Bursa, Turkey", 
      "name": "Durger, Nurten Basak"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Kocaeli Univ, Dept Met & Mat Engn, Kocaeli, Turkey", 
      "name": "Un, Sibel"
    }
  ], 
  "datePublished": "2021-01-01", 
  "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.", 
  "headline": "Microstructure and Phase Transformations in High-Strength Bainitic Forging Steel", 
  "identifier": 238200, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Microstructure and Phase Transformations in High-Strength Bainitic Forging Steel", 
  "url": "https://aperta.ulakbim.gov.tr/record/238200"
}