|Title:||Effects of interphase TiC precipitates on tensile properties and dislocation structures in a dual phase steel||Authors:||Tsai S.-P.
|Keywords:||Dislocation substructure; Dual-phase steel; Gleeble simulation; Interphase-precipitated titanium carbide; Transmission electron microscopy||Issue Date:||2017||Journal Volume:||123||Start page/Pages:||153-158||Source:||Materials Characterization||Abstract:||
In this work, titanium-free and titanium carbide-strengthened dual-phase steels were studied. While both had the same base composition of Fe–0.1C–1.5Mn–0.5Si–0.6Cr (wt%), the latter included a 0.1 wt% Ti addition for interphase precipitation. Utilizing the Gleeble thermal simulations, both two dual-phase steels were produced with the same ferrite grain size and the same ferrite/martensite volume fractions of 0.7 and 0.3, respectively. Their corresponding microstructures (including deformed structures) and mechanical properties were examined. The results indicate that the titanium carbide-strengthened dual-phase steel possesses an excellent combination of the strengthened ferrite and the weakened martensite, which brings about increased yield and tensile strengths without sacrificing total elongation. © 2016
|DOI:||10.1016/j.matchar.2016.11.023||SDG/Keyword:||Ferrite; High resolution transmission electron microscopy; Tensile strength; Titanium; Titanium carbide; Transmission electron microscopy; Dislocation structures; Dislocation substructures; Dual-phase steel; Ferrite grain size; Gleeble simulation; Interphase precipitation; Thermal simulations; Yield and tensile strength; Martensitic steel|
|Appears in Collections:||材料科學與工程學系|
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