Journal article
Modeling of CCT Diagrams and Ferrite Grain Size Prediction in Low Carbon Nb-Mo Microalloyed Steels
ISIJ international, v 55(9), pp 1963-1972
01 Jan 2015
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Abstract
In this paper a multi-linear regression analysis is developed to predict continuous cooling (CCT) diagrams in low carbon Nb and Nb-Mo microalloyed steels. The inputs to the analysis include the weight percentage of alloying elements, the prior austenite grain size, the retained strain and the cooling rate. To develop the model, 11 steels with different combinations of Nb and Mo were considered. In some cases, the resulting equations have been validated with external data from the literature. Additionally, the model was also employed to predict hardness and ferrite grain size with the aim of providing a tool to link microstructural features with mechanical property predictions. Both Nb and Mo additions promote a reduction of ferrite and bainite start temperatures, where the effect is more pronounced for Nb in the bainitic region. Both microalloying elements contribute to an increase in hardness and a refinement of the microstructure.
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Details
- Title
- Modeling of CCT Diagrams and Ferrite Grain Size Prediction in Low Carbon Nb-Mo Microalloyed Steels
- Creators
- Nerea Isasti - Universidad de NavarraPedro Manuel Garcia-Riesco - Universidad de NavarraDenis Jorge-Badiola - Universidad de NavarraMitra Taheri - Drexel UniversityBeatriz Lopez - Universidad de NavarraPello Uranga - Universidad de Navarra
- Publication Details
- ISIJ international, v 55(9), pp 1963-1972
- Publisher
- Iron Steel Inst Japan Keidanren Kaikan
- Number of pages
- 10
- Grant note
- PI2011-17 / Basque Government MAT2009-09250; MAT2012-31056 / Spanish Ministry of Economy and Competitiveness; Spanish Government
- Resource Type
- Journal article
- Language
- English
- Web of Science ID
- WOS:000362154800022
- Scopus ID
- 2-s2.0-84943156508
- Other Identifier
- 991019335321904721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Metallurgy & Metallurgical Engineering