Defects in High Entropy Alloy HfNbTaTiZr Prepared by High Pressure Torsion

0507464 - ÚFP 2020 RIV PL eng C - Konferenční příspěvek (zahraniční konf.)
Lukáč, František - Dudr, Martin - Čízek, J. - Harcuba, P. - Vlasák, T. - Janeček, M. - Kuriplach, J. - Moon, J. - Kim, H. S. - Zyka, J. - Málek, J.
Defects in High Entropy Alloy HfNbTaTiZr Prepared by High Pressure Torsion.
Acta Physica Polonica. Varšava: Polish Academy of Sciences, 2017, s. 891-894. ISSN 0587-4246.
[14th International Symposium on Physics of Materials. Praha (CZ), 10.09.2017-15.09.2017]
Grant CEP: GA ČR GA17-17016S
Institucionální podpora: RVO:61389021
Klíčová slova: high pressure * entropy * defects
Obor OECD: Materials engineering
http://przyrbwn.icm.edu.pl/APP/PDF/134/app134z3p62.pdf

High entropy alloy HfNbTaTiZr was successfully processed by severe plastic deformation using high pressure torsion (HPT) and ultrafine grained microstructure was achieved. The microstructure of HPT-deformed HfNbTaTiZr alloy was characterized by X-ray diffraction and compared with conventionally cast ingots. The lattice defects introduced by HPT processing were characterized by positron annihilation spectroscopy. The X-ray diffraction profiles of HTP-deformed samples were extremely broadened due to small sizes of coherently diffracting domains and a high microstrain introduced by severe plastic deformation.
Trvalý link: http://hdl.handle.net/11104/0298449