Journal article
Microstructural and Precipitation Characterization in Nb-Mo Microalloyed Steels: Estimation of the Contributions to the Strength
Metals and materials international, v 20(5), pp 807-817
01 Sep 2014
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The influence of coiling temperature on the final microstructure and precipitation has been analyzed in several low carbon Nb and Nb-Mo microalloyed steels. A throughout characterization of the complex microstructures has been performed using electron backscattered diffraction, measuring low and high angle unit sizes, microstructural substructure, as well as quantifying the homogeneity. An important microstructural refinement is observed for all compositions as the coiling temperature decreases. Regarding precipitation, the coiling temperature strongly modifies the size and density of the fine precipitates, being 550 degrees C the optimal coiling temperature for the Nb-Mo steels. The addition of Mo to Nb steels provides a refinement of the precipitates and, therefore, enhances their contribution to strengthening. Considering all the microstructural and precipitation quantification data, the yield strength was estimated and the contribution of the different mechanisms calculated. The grain size contribution is proven to be the most important factor regarding strengthening, followed by dislocation density and precipitation especially at low coiling temperatures and Nb-Mo steels.
Metrics
Details
- Title
- Microstructural and Precipitation Characterization in Nb-Mo Microalloyed Steels: Estimation of the Contributions to the Strength
- Creators
- N. Isasti - Universidad de NavarraD. Jorge-Badiola - Universidad de NavarraM. L. Taheri - Drexel UniversityP. Uranga - Universidad de Navarra
- Publication Details
- Metals and materials international, v 20(5), pp 807-817
- Publisher
- Korean Inst Metals Materials
- Number of pages
- 11
- 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:000341283700002
- Scopus ID
- 2-s2.0-84919906583
- Other Identifier
- 991019335327304721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Metallurgy & Metallurgical Engineering