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http://dx.doi.org/10.7777/jkfs.2012.32.2.104

Effects of Heat Treatment Condition on the Mechanical Properties in Fe-0.4%C-2.3%Si Steel  

Son, Je-Young (School of Materials Science and Engineering, Materials Science and Metallurgical Engineering, Graduate School of Kyungpook National University)
Song, June-Hwan (School of Materials Science and Engineering, Materials Science and Metallurgical Engineering, Graduate School of Kyungpook National University)
Kim, Ji-Hun (Small and Medium Business Corporation)
Ye, Byung-Joon (School of Materials Science and Engineering, Materials Science and Metallurgical Engineering, Graduate School of Kyungpook National University)
Publication Information
Journal of Korea Foundry Society / v.32, no.2, 2012 , pp. 104-108 More about this Journal
Abstract
The effect of heat treatment on mechanical properties of 0.4C-2.3Si(wt%) steel with bainitic ferrite matrix were investigated. This steel has been synthesized intergrating concepts from TRIP(Transformation Induced Plasticity) steel & Austempered Ductile Cast Iron(ADI) technology. The low alloy medium carbon (0.4 %C) steel with high silicon (2.3 %Si) was initially annealed for 60 min at $800^{\circ}C$, $820^{\circ}C$ and $840^{\circ}C$ respectively in the intercritical region and then subsequently austempered at various temperatures at $260^{\circ}C$, $320^{\circ}C$ and $380^{\circ}C$ for 30 min in a salt bath. The mechanical properties were measured by using a tensile test. A detailed study of the microstructure of this steel after heat treatment was carried out by means of electron back scattering diffraction (EBSD) technic. In this study, a new low alloy steel with high strength (780~1,050MPa) and exceptionally high ductility (20~40%) was obtained.
Keywords
Intercritical annealing; Austempering; Retained austenite; Mechanical property;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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