English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/171201
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Towards efficient microstructural design and hardness prediction of bearing steels — An integrated experimental and numerical study

AuthorsCui, W.; San-Martín, D. ; Rivera-Díaz del Castillo, P.E.J.
KeywordsAustenite
Microstructure design
Steel with spheroidal cementite
Austenitisation
Transformation kinetics
Hardness
Issue Date2017
PublisherElsevier
CitationMaterials and Design 133: 464-475 (2017)
AbstractThe present work develops a numerical approach combining thermodynamic and kinetic simulations to investigate the austenitisation process on spheroidised bearing steel. The approach incorporates the dissolution of spheroidised cementite present prior to austenitisation and the influence of austenitisation temperature. It allows predictions including the chemical driving force of austenite formation, the evolution of phase constituents and their chemical compositions during austenitisation, as well as an assessment on the austenite stability upon quenching. The calculated results further allow to predict the hardness of the produced martensitic steels. The model predictions are validated against experimental data in two commercial bearing steels with six austenitisation processes. Good agreement between the experimental results and numerical predictions is obtained on the steel microstructure, austenite stability and material hardness. In addition, comparison of the two steels show that 100Cr6 requires to be austenitised at temperatures 10 °C higher than 100CrMnSi6-4, to achieve the same driving force for austenite formation, and 20 °C higher to achieve identical austenite stability upon quenching. The method can be adopted beyond bearing steels to design austenitisation processing schedules.
URIhttp://hdl.handle.net/10261/171201
Identifiersdoi: 10.1016/j.matdes.2017.08.013
issn: 1873-4197
Appears in Collections:(CENIM) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.