The "quenching and partitioning" process: background and recent progress



Título del documento: The "quenching and partitioning" process: background and recent progress
Revista: Materials research
Base de datos: PERIÓDICA
Número de sistema: 000312847
ISSN: 1516-1439
Autores: 1

2
3
Instituciones: 1Colorado School of Mines, Golden, Colorado. Estados Unidos de América
2Pontificia Universidade Catolica do Rio de Janeiro, Rio de Janeiro. Brasil
3University of Leeds, Leeds, Yorkshire. Reino Unido
Año:
Periodo: Oct-Dic
Volumen: 8
Número: 4
Paginación: 417-423
País: Brasil
Idioma: Inglés
Tipo de documento: Nota breve o noticia
Enfoque: Analítico
Resumen en inglés A new process concept, "quenching and partitioning" (Q&P) has been proposed recently for creating steel microstructures with retained austenite. The 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 process concept is reviewed here, along with the thermodynamic basis for the partitioning treatment, and a model for designing some of the relevant processing temperatures. These concepts are applied to silicon-containing steels that are currently being examined for low-carbon TRIP sheet steel applications, and medium-carbon bar steel applications, along with a silicon-containing ductile cast iron. Highlights of recent experimental studies on these materials are also presented, that indicate unique and attractive microstructure/property combinations may be obtained via Q&P. This work is being carried out through a collaborative arrangement sponsored by the NSF in the USA, CNPq in Brazil, and the EPSRC in the United Kingdom
Disciplinas: Ingeniería
Palabras clave: Ingeniería mecánica,
Ingeniería metalúrgica,
Aleaciones,
Acero,
Microestructuras,
Martensita
Keyword: Engineering,
Mechanical engineering,
Metallurgical engineering,
Alloys,
Steel,
Microstructures,
Martensite
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