Quantitative investigation into the influence of temperature on carbide and austenite evolution during partitioning of a quenched and partitioned steel
| Autor: | D.T. Pierce, Amy J. Clarke, D. L. Williamson, J. Kähkönen, John G. Speer, D.R. Coughlin, Kester D. Clarke, E. De Moor |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Austenite Quenching Materials science Cementite Bainite Mechanical Engineering Metallurgy Metals and Alloys chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Decomposition Carbide chemistry.chemical_compound chemistry Materials Science(all) Mechanics of Materials Martensite 0103 physical sciences General Materials Science 0210 nano-technology Carbon |
| Zdroj: | Scripta Materialia. 121:5-9 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2016.04.027 |
| Popis: | The influence of partitioning temperature on microstructural evolution during quenching and partitioning was investigated in a 0.38C 1.54Mn 1.48Si wt.% steel using Mossbauer spectroscopy and transmission electron microscopy. η-carbide formation occurs in the martensite during the quenching, holding, and partitioning steps. More effective carbon partitioning from martensite to austenite was observed at 450 than 400 °C, resulting in lower martensite carbon contents, less carbide formation, and greater retained austenite amounts for short partitioning times. Conversely, greater austenite decomposition occurs at 450 °C for longer partitioning times. Cementite forms during austenite decomposition and in the martensite for longer partitioning times at 450 °C. |
| Databáze: | OpenAIRE |
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