@inproceedings{0967c0248af740ffb913677c37458399,
title = "Effect of Q-P-T process on the microstructure and mechanicalproperties of 300M steel",
abstract = "The effect of Quenching-Partitioning-Tempering (Q-P-T) process on the microstructureand mechanical properties of 300M steel were investigated. X-ray diffraction, scanning electronmicroscopy and optical microscope were employed to characterize the evolution of microstructureas well as the volume fraction of retained austenite. The results showed that the samples treated byQ-P-T possess more retained austenite compared with traditional Quenching-Tempering process.After Q-P-T, the strength increased slightly, while the ductility and toughness improved markedly.Microstructure analysis indicated the difference between Q-T and Q-P-T process lies in the amountof the retained austenite as well as the size and size distribution of the martensite laths. The Q -Tresulted in a little of thin film-like retained austenite in addition to wide martensite strip, while theQ-P -T resulted in large amount of thick-like austenite accompanying narrow martensite strip.Therefore, 300M steel with better ductility and toughness could be obtained by Q-P-T heatTreatment.",
keywords = "300m steel, Martensite, Product of strength and elongation, Q-P-T, Retained austenite",
author = "Ruiwen Zhao and Tianqi Liu and Xinqing Zhao",
year = "2013",
doi = "10.4028/www.scientific.net/MSF.749.287",
language = "英语",
isbn = "9783037856093",
series = "Materials Science Forum",
publisher = "Trans Tech Publications Ltd",
pages = "287--293",
booktitle = "Materials Performance, Modeling and Simulation",
address = "瑞士",
note = "Chinese Materials Congress 2012, CMC 2012 ; Conference date: 13-07-2012 Through 18-07-2012",
}