Microstructural Evolution of Medium Carbon Steels during the Quenching and Partitioning Process

Abstract:

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The “Quenching and Partitioning” (Q&P) process is a novel heat treatment designed for processing new generation advanced high strength steels (AHSS) with substantial ductility. In this study, evolution of complex microstructure for medium carbon steels during the Q&P process has been discussed in detail. Such steels have shown a complex multiphase microstructure consisted of fresh lath-martensite, fresh plate-martensite, transition carbide and/or cementite, isothermal martensite/lower bainite, and second twin-martensite after the one-step Q&P process (with the identical quenching and partitioning temperature). The morphology for the microstructure at room temperature after the two-step Q&P process (with different quenching and partitioning temperatures) demonstrated a little different. The formation of different microstructure for these two processes and their correlation with the mechanical properties are discussed.

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Main Theme:

Edited by:

Jian-Feng Nie and Allan Morton

Pages:

86-89

DOI:

10.4028/www.scientific.net/MSF.654-656.86

Citation:

H. Y. Li and X. J. Jin, "Microstructural Evolution of Medium Carbon Steels during the Quenching and Partitioning Process", Materials Science Forum, Vols. 654-656, pp. 86-89, 2010

Online since:

June 2010

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Price:

$35.00

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