English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/215687
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 | DATACITE
Exportar a otros formatos:

Title

Design and Development of Complex Phase Steels with Improved Combination of Strength and Stretch-Flangeability

AuthorsGraux, Alexis; Cazottes, S.; Castro, David de; San-Martín, D. ; Capdevila, Carlos ; Cabrera, J. M.; Molas, Sílvia; Schreiber, Sebastian; Mirković, Djordje; Danoix, F.; Fabrègue, D.; Perez, Michel
KeywordsMetallurgy
Complex phase steels
Microalloyed steels
Hot rolling
Stretch-flangeability
Issue Date2020
PublisherMultidisciplinary Digital Publishing Institute
CitationMetals 10(6): 824 (2020)
AbstractThis study presents the design and development of a hot-rolled bainitic steel, presenting a good combination of strength and stretch-flangeability, for automotive applications. Ti, Nb, and Mo were added in the steel composition in order to control austenite grain sizes, enhance precipitation hardening, and promote the formation of bainite. This study focuses on the effect of process parameters on final microstructures and mechanical properties. These parameters are the finishing rolling temperature, which conditions the austenite microstructure before its decomposition, and the coiling temperature, which conditions the nature and morphology of the ferritic phases transformed. A preliminary study allowed to determine the austenite grain growth behavior during reheating, the recrystallization kinetics, and the continuous cooling transformation curves of the studied steel. Then, a first set of parameters was tested at a semi-industrial scale, which confirmed that the best elongation properties were obtained for homogeneous bainitic lath/granular microstructures, that can be produced by choosing a coiling temperature of 500 ∘C . When choosing those parameters for the final industrial trial, the microstructure obtained consisted of a homogeneous lath/granular bainite mixture that presented a Ultimate Tensile Strength of 830 MPa and a Hole Expansion Ratio exceeding 70%.
Description© 2020 by the authors.
Publisher version (URL)https://doi.org/10.3390/met10060824
URIhttp://hdl.handle.net/10261/215687
DOIhttp://dx.doi.org/10.3390/met10060824
E-ISSN2075-4701
Appears in Collections:(CENIM) Artículos
Files in This Item:
File Description SizeFormat 
Design_Graux_Art2020.pdf10,51 MBAdobe 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.