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Complex ferritic structures obtained by three different heat treatments: differences and similarities

AuthorsDe Castro, D.; Rementería, Rosalía; Sourmail, Thomas; Poplawsky, Jon D.; Vivas, Javier; Capdevila, Carlos; García Caballero, Francisca
KeywordsStrength steels
Quenching and partitioning (Q&P)
TRIP steels
Issue Date2-Sep-2019
AbstractRecently, a new processing concept known as quenching and partitioning (Q&P) has been proposed for designing high strength steels. This process involves quenching austenite below the martensite-start temperature, followed by a partitioning treatment to enrich the remaining austenite with carbon, thereby stabilizing it to room temperature. The resultant microstructures mainly consist of tempered martensite and retained austenite so that a higher strength can be achieved as compared to conventional TRIP steels. In high silicon hypereutectoid steels, lath-like ferrite matrix and a significant amount of ductile austenite that improves the work-hardening of the complex composite structure by TRIP effect can be also achieved by more conventional heat treatments such as an isothermal bainite treatment (B) or a traditional quench and temper (Q&T).
DescriptionEUROMAT 2019 - B: Structural Materials
Publisher version (URL)https://euromat2019.fems.eu/symposia-structure/
Appears in Collections:(CENIM) Comunicaciones congresos
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