Isothermal transformations in advanced high strength steels below martensite start temperature

Autor:	Jilt Sietsma, D. De Knijf, Yvan Houbaert, Roumen Petrov, Wei Xu, E. P. Da Silva, Cecilia Föjer
Rok vydání:	2014
Předmět:	Austenite Materials science Bainite Mechanical Engineering Metallurgy Condensed Matter Physics Isothermal process Carbide Isothermal transformation diagram Mechanics of Materials Martensite General Materials Science Dilatometer Electron backscatter diffraction
Zdroj:	Materials Science and Technology. 31:808-816
ISSN:	1743-2847 0267-0836
DOI:	10.1179/1743284714y.0000000719
Popis:	The transformation products in advanced high strength steels have been studied during the isothermal decomposition of austenite, subsequent to initial martensite formation. Rapid cooling to various temperatures below martensite start was carried out in a dilatometer with the intention to form controlled volume fractions of initial martensite and austenite, followed by isothermal holding. The transformation kinetics was monitored by means of dilatometry and microstructural characterisation by scanning electron microscopy, electron backscatter diffraction and X-ray diffraction. Hardness measurements of the resulting microstructures were analysed. The results revealed that the microstructures formed below MS are mainly composed of different fractions of tempered martensite, isothermal bainite with carbide precipitation and retained austenite.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2b5d18fb56b989ea9e8da8a856bb88b7 https://doi.org/10.1179/1743284714y.0000000719 Zobrazit plný text záznamu