Austenite-to-ferrite transformation in low alloy steels during thermornechanically controlled process studied by in situ neutron diffraction

0049223 - ÚJF 2007 RIV CH eng J - Článek v odborném periodiku
Xu, PG. - Tomota, Y. - Lukáš, Petr - Muránsky, Ondrej - Adachi, Y.
Austenite-to-ferrite transformation in low alloy steels during thermornechanically controlled process studied by in situ neutron diffraction.
[In situ neutronové difrakční studie austenicko-feritické transformace v nizkolegovaných ocelích v průběhu termomechanicky řízených procesů.]
Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. Roč. 435, č. 5 (2006), s. 46-53. ISSN 0921-5093. E-ISSN 1873-4936
Grant CEP: GA AV ČR IAA1048107
Výzkumný záměr: CEZ:AV0Z10480505
Klíčová slova: austenite-to-ferrite tranformation * neutron diffraction * thermomechanically controlled prosess
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.490, rok: 2006

Microstructural evolution during the ferrite transformation in two low alloy steels was investigated in situ by neutron diffraction. The transformation kinetics determined from the neutron diffraction profiles were well consistent with those measured from the metallographic microstructures, and the carbon enrichment in austenite during the ferrite transformation was confirmed by the changes in (111) lattice plane spacing of austenite. The deformed and non-deformed austenite microstructures were found to exhibit distinguishable shape difference in their transition curves. The niobium addition and austenite deformation were demonstrated to promote the ferrite transformation.

In situ neutronová difrakční studie byla zaměřena na kinetiku austeniticko-feritické transformace v ocelích ve vztahu k mikrostruktuře materiálu a parametrům termomechanického zpracování.
Trvalý link: http://hdl.handle.net/11104/0139670