TY - JOUR
T1 - Oxidation and hardness profile of V-Ti-Cr-Si-Al-Y alloys
AU - Fujiwara, Mitsuhiro
AU - Satou, Manabu
AU - Hasegawa, Akira
AU - Abe, Katsunori
N1 - Funding Information:
This work was partly supported by the JUPITER program (Japan–USA Program of Irradiation Test for Fusion Research) and a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture, Japan. The authors would also like to thank Messrs R. Sakamoto, M. Fujisawa and C. Akama for their help in the experimental work.
PY - 2000
Y1 - 2000
N2 - Several alloys of composition V^Ti-4Cr-(0-0.5)Si-(0-0.5)Al-(0-0.5)Y were selected for oxidation in air. In addition a V-4Ti-4Cr-0.5Si-0.5Al-0.5Y alloy was pre-implanted with helium to study the effect of helium on oxidation behavior. Rapid oxidation experiments in air were conducted on tensile specimens and disc bend specimens at 300°C, 500°C, 600°C and 700°C for 1 h. After oxidation, tensile specimens were mounted in cross-section, and micro-indentation hardness tests were conducted. The depths of increased hardness obtained by indentation tests and the thickness of cleavage fracture zones measured by using scanning electron microscopy (SEM) micrographs were similar. The hardness profile of the cross-section in the depth direction corresponded to a model of oxygen diffusion in vanadium. Three-point bend tests were conducted on helium-implanted and air- exposed disc specimens. The bending stress of the specimen with 700 appm helium was larger than that with 70 appm helium.
AB - Several alloys of composition V^Ti-4Cr-(0-0.5)Si-(0-0.5)Al-(0-0.5)Y were selected for oxidation in air. In addition a V-4Ti-4Cr-0.5Si-0.5Al-0.5Y alloy was pre-implanted with helium to study the effect of helium on oxidation behavior. Rapid oxidation experiments in air were conducted on tensile specimens and disc bend specimens at 300°C, 500°C, 600°C and 700°C for 1 h. After oxidation, tensile specimens were mounted in cross-section, and micro-indentation hardness tests were conducted. The depths of increased hardness obtained by indentation tests and the thickness of cleavage fracture zones measured by using scanning electron microscopy (SEM) micrographs were similar. The hardness profile of the cross-section in the depth direction corresponded to a model of oxygen diffusion in vanadium. Three-point bend tests were conducted on helium-implanted and air- exposed disc specimens. The bending stress of the specimen with 700 appm helium was larger than that with 70 appm helium.
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U2 - 10.1016/S0022-3115(00)00386-X
DO - 10.1016/S0022-3115(00)00386-X
M3 - Article
AN - SCOPUS:0345868554
SN - 0022-3115
VL - 283-287
SP - 1311
EP - 1315
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - PART II
ER -