USING THERMOMECHANICAL TREATMENTS TO IMPROVE THE GRAIN GROWTH OF NEW-GENERATION ODS ALLOYS

0494470 - ÚFM 2019 RIV SI eng J - Článek v odborném periodiku
Khalaj, O. - Jirková, H. - Mašek, B. - Hassasroudsari, P. - Studecky, T. - Svoboda, Jiří
USING THERMOMECHANICAL TREATMENTS TO IMPROVE THE GRAIN GROWTH OF NEW-GENERATION ODS ALLOYS.
Materiali in Tehnologije. Roč. 52, č. 4 (2018), s. 475-482. ISSN 1580-2949. E-ISSN 1580-3414
Grant CEP: GA ČR(CZ) GA17-01641S
Institucionální podpora: RVO:68081723
Klíčová slova: tensile properties * microstructure * behavior * oxidation * evolution * steels * grain growth * ODS alloys * steel * Fe-Al * a1(2)o(3)
Obor OECD: Thermodynamics
Impakt faktor: 0.714, rok: 2018

In order to achieve specific mechanical properties and structures of a material, a combination of new technologies together with an unconventional use of different types of materials could be an asset. Powder metallurgy, involving a metal matrix and dispersed stable particles, in combination with mechanical alloying and hot consolidation could be a solution. This paper describes the thermomechanical characteristics of new oxide-dispersion-strengthened (ODS) alloys with a Fe-Al matrix in terms of changes in the grain-size distribution. Recrystallization and grain growth were investigated over a range of temperatures and deformations. The results show that the grain-growing process in the new ODS alloys is significantly affected by the thermomechanical treatment, leading to the maximum grain size within 20-h annealing at 1200 degrees C. They are analysed using different methods, including optical microscopy.
Trvalý link: http://hdl.handle.net/11104/0288140