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

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ID: 230105
2005
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Abstract
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.
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speer2005materialsthe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;John G. Speer;Fernando C. Rizzo Assunção;David K. Matlock;David V. Edmonds
Journal Majalah Ilmiah Teknologi Elektro
Year 2005
DOI
10.1590/S1516-14392005000400010
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392005000400010
Keywords
retained austenite mechanics of materials

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