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Determination of the critical parameters for the onset of dynamic recrystallization (DRX) in advanced ultrahigh strength steels (A-UHSS) microalloyed with boron
dc.contributor.author | Altamirano Guerrero, Gerardo |
dc.contributor.author | Mejía Granados, Ignacio |
dc.contributor.author | Cabrera Marrero, José M. |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica |
dc.date.accessioned | 2013-04-09T07:33:06Z |
dc.date.available | 2013-04-09T07:33:06Z |
dc.date.created | 2012 |
dc.date.issued | 2012 |
dc.identifier.citation | Altamirano Guerrero, G.; Mejía Granados, I.; Cabrera, J. Determination of the critical parameters for the onset of dynamic recrystallization (DRX) in advanced ultrahigh strength steels (A-UHSS) microalloyed with boron. "Computer methods in materials science", 2012, vol. 12, núm. 3, p. 152-162. |
dc.identifier.issn | 1641-8581 |
dc.identifier.uri | http://hdl.handle.net/2117/18712 |
dc.description.abstract | In this research work, the double differentiation mathematical method was used to identify more accurately the criti- cal stress ሺ ߪ ) and critical strain ሺ ߝ ) associated with the onset of dynamic recrystallization (DRX), which is based on changes of the strain hardening rate )ߝ߲/ߪ߲ ൌ ߠሺ as a function of the flow stress (Poliak and Jonas method, simplified by Najafizadeh and Jonas). For this purpose, a low carbon advanced ultra-high strength steel (A-UHSS) microalloyed with different amounts of boron (14, 33, 82, 126 and 214 ppm) was deformed by uniaxial hot-compression tests at high tempe- ratures 1100 ݀݊ܽ ሺ950,1000,1050 ° )ܥ and constant true strain rates ሺ 10 ିଷ ,10 ିଶ 10 ݀݊ܽ ିଵ ݏ ିଵ ) . Results indicate that both ߪ and ߝ increase with decreasing deformation temperature and in creasing strain rate. On the other hand, these criti- cal parameters tend to decrease as boron content increases. Such a behavior is attributed to a solute drag effect by boron atoms on the austenitic grain boundaries and also to a solid solution softening effect. |
dc.format.extent | 11 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject.lcsh | Steel |
dc.title | Determination of the critical parameters for the onset of dynamic recrystallization (DRX) in advanced ultrahigh strength steels (A-UHSS) microalloyed with boron |
dc.type | Article |
dc.subject.lemac | Acer d'alta resistència |
dc.contributor.group | Universitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics |
dc.relation.publisherversion | http://www.cmms.agh.edu.pl/ |
dc.rights.access | Open Access |
local.identifier.drac | 11715040 |
dc.description.version | Postprint (published version) |
local.citation.author | Altamirano Guerrero, G.; Mejía Granados, I.; Cabrera, J. |
local.citation.publicationName | Computer methods in materials science |
local.citation.volume | 12 |
local.citation.number | 3 |
local.citation.startingPage | 152 |
local.citation.endingPage | 162 |
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