Influence of thermal treatment on structure and microhardness of Fe75Ni2Si8B13C2 amorphous alloy

0376444 - ÚFM 2012 RIV GB eng J - Článek v odborném periodiku
Blagojević, V. - Minić, Dušan M. - Žák, Tomáš - Minić, Dragica M.
Influence of thermal treatment on structure and microhardness of Fe75Ni2Si8B13C2 amorphous alloy.
Intermetallics. Roč. 19, č. 7 (2011), s. 1780-1785. ISSN 0966-9795. E-ISSN 1879-0216
Grant CEP: GA MŠMT(CZ) 1M0512
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: magnetic intermetallics * mechanical properties at ambient temperature * microstructure * diffraction
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.649, rok: 2011

Correlation between hardness of amorphous Fe75Ni2Si8B13C2 alloy and thermally induced structural transformations has been investigated by measuring microhardness in a series of samples heated at different temperatures from 25 to 1000 °C. The alloy has a relatively high hardness in the amorphous state, due to its chemical composition involving silicon, boron and carbon. As the alloy begins to crystallize, microhardness increased and reached a plateau in 500-650 °C temperature region, due to formation composite structure involving the small nanocrystals of alpha-Fe(Si) and Fe2B phases dispersed in the amorphous matrix. After treatment at higher temperatures, the nanocomposite structure is replaced by a more granulated structure, leading to decline in microhardness.
Trvalý link: http://hdl.handle.net/11104/0208838