TY - JOUR
T1 - Microstructure of tantalum irradiated with heavy ions
AU - Yasunaga, K.
AU - Watanabe, H.
AU - Yoshida, N.
AU - Muroga, T.
AU - Noda, N.
PY - 1998/10
Y1 - 1998/10
N2 - For the purpose of investigating the general response of tantalum to irradiation, microstructures have been observed after irradiation with 3.0 or 2.4 MeV Cu2+ ions at 773 to 1546 K and to 20 dpa. Below 1073 K, the microstructures consisted mainly of high density of small dislocation loops and straight dislocations. The small dislocation loops observed were identified to be of vacancy-type. Voids were formed above 973 K, however, the swelling was negligibly small up to 20 dpa below ∼1100 K. High density of defects observed below 1073 K may cause significant change in mechanical properties. This may be a concern in applying tantalum to fusion high heat flux components.
AB - For the purpose of investigating the general response of tantalum to irradiation, microstructures have been observed after irradiation with 3.0 or 2.4 MeV Cu2+ ions at 773 to 1546 K and to 20 dpa. Below 1073 K, the microstructures consisted mainly of high density of small dislocation loops and straight dislocations. The small dislocation loops observed were identified to be of vacancy-type. Voids were formed above 973 K, however, the swelling was negligibly small up to 20 dpa below ∼1100 K. High density of defects observed below 1073 K may cause significant change in mechanical properties. This may be a concern in applying tantalum to fusion high heat flux components.
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U2 - 10.1016/S0022-3115(98)00261-X
DO - 10.1016/S0022-3115(98)00261-X
M3 - Article
AN - SCOPUS:0032180054
SN - 0022-3115
VL - 258-263
SP - 879
EP - 882
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - PART 1 A
ER -