Kinetics of static recrystallization in the coarse-grained Fe–40 at.%Al–Zr–B alloy
dc.contributor.author | Hanus Pawel | cs |
dc.contributor.author | Schindler Ivo | cs |
dc.contributor.author | Kopeček Jaromír | cs |
dc.contributor.author | Kawulok Petr | cs |
dc.contributor.author | Jabłońska Magdalena | cs |
dc.contributor.author | Hadasik Eugeniusz | cs |
dc.contributor.author | Jóźwik Pawel | cs |
dc.contributor.author | Opěla Petr | cs |
dc.contributor.author | Polkowski Wojciech | cs |
dc.contributor.author | Bojar Zbigniew | cs |
dc.date.accessioned | 2018-09-25T12:10:33Z | |
dc.date.available | 2018-09-25T12:10:33Z | |
dc.date.issued | 2017 | cs |
dc.description.abstract | The aim of works was to describe mathematically the kinetics of static recrystallization of the alloy type Fe–40 at.%Al–Zr–B (with 24.6 Al–0.01 B–0.18 Zr–0.01 C in wt.%) with the coarse-grained structure. The microstructure of the laboratory castings made of this extremely brittle alloy was homogenized by hot rolling of the material in the protective capsules and by the long-term annealing at 1200 °C. An initial microstructure with average grain size 0.77 ± 0.27 mm was obtained. Based on the isothermal plastic deformation tests and EBSD analysis, the static recrystallization kinetics of the prepared coarse-grained B2 iron aluminide after strain 0.20 was mathematically described. Recrystallized fraction depends on deformation/annealing temperature (900–1100 °C) as well as on annealing time. The activation energy of static recrystallization was calculated as 255 kJ mol−1. Competition between dynamic recovery and static recrystallization was proved after strain 0.35 and annealing temperature 1100 °C. Static recrystallization starts relatively easily in the studied alloy, but a very long-term annealing is quite necessary for the complete course of recrystallization. The mean size of recrystallized grains falls with the decreasing annealing temperature (0.47 ± 0.15 mm for temperature 1100 °C, and 0.22 ± 0.04 mm for 900 °C). Even at a temperature of 1200 °C the annealing after deformation should last approx. 1 min for obtaining the fully recrystallized microstructure. That is why the standard hot forming technologies should be combined by an interpass annealing in order to refine sufficiently the coarse grains. | en |
dc.format.extent | 11 | cs |
dc.identifier.doi | 10.1016/j.acme.2017.03.004 | |
dc.identifier.issn | 1644-9665 | cs |
dc.identifier.uri | https://dspace.tul.cz/handle/15240/30673 | |
dc.identifier.uri | https://www.sciencedirect.com/science/article/abs/pii/S1644966517300341 | |
dc.language.iso | eng | cs |
dc.publisher | ELSEVIER URBAN & PARTNER SP Z O O | cs |
dc.publisher.city | Wroclaw | cs |
dc.relation.ispartofseries | 0 | cs |
dc.relation.uri | http://www.sciencedirect.com/science/article/pii/S1644966517300341 | cs |
dc.subject | Iron aluminide | cs |
dc.subject | Hot compression test | cs |
dc.subject | Isothermal annealing | cs |
dc.subject | EBSD | cs |
dc.subject | Static recrystallization | cs |
dc.title | Kinetics of static recrystallization in the coarse-grained Fe–40 at.%Al–Zr–B alloy | cs |
local.citation.epage | 816-826 | cs |
local.citation.spage | 816-826 | cs |
local.identifier.publikace | 4123 | |
local.identifier.wok | 416528900009 | en |
local.relation.issue | 4 | cs |