Phase Transformations and Age-hardening Behaviors related to Au_3Cu in Au-Cu-Pd Alloys
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概要
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Phase transformation behaviors in Au-Cu-Pd alloys were investigated by means of electrical resistivity measurements, hardness tests, X-ray diffraction and transmission electron microscopy. Anisothermal and isothermal annealing were performed. Two types of phase transformations were found, namely related to the single phase of Au_3Cu and the coexistent phase of Au_3Cu and AuCu I. The latter produced more remarkable hardening than the former. Hardening was brought about by the antiphase domain size effect of Au_3Cu ordered phase in the single phase and by the formation of AuCu I ordered phase in the Au_3Cu ordered matrix. There are three modes of phase transformation in the coexistent region depending on the composition. Each sequence is discussed.
著者
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Tanaka Yasuhiro
Department Of Digestive And Life-style Related Diseases Kagoshima University Graduate School Of Medi
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Tanaka Yasuhiro
Department Of Cardiovascular Medicine Tokyo Medical And Dental University
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UDOH Koh-ichi
Department of Biomaterials, Faculty of Dental Science, Kyushu University
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TAKUMA Yasuko
Department of Dental and Biomedical Materials Science, Unit of Basic Medical Sciences, Graduate Scho
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HISATSUNE Kunihiro
Department of Dental and Biomedical Materials Science, Unit of Basic Medical Sciences, Graduate Scho
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久恒 邦博
長崎大学大学院医歯薬学総合研究科生体材料工学分野
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Udoh Koh-ichi
Department Of Dental Materials Science Nagasaki University School Of Dentistry
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Udoh Koh-ichi
長崎大学 歯 歯理工
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HERNANDEZ Rhodora
Department of Dental Materials Science, Nagasaki University School of Dentistry
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WINN HTAIN
Department of Dental Materials Science, Nagasaki University School of Dentistry
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Hernandez Rhodora
Department Of Dental Materials Science Nagasaki University School Of Dentistry
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O Htain-winn
Department Of Dental Materials Science Nagasaki University School Of Dentistry
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Takuma Yasuko
Department Of Dental And Biomedical Materials Science Unit Of Basic Medical Sciences Graduate School
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Tanaka Y
Sanyo Electric Co. Ltd. Gifu‐ken Jpn
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Tanabe Yasuhiko
Division Of Electronics And Information Engineering Graduate School Of Engineering Hokkaido Universi
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Winn Htain
Department Of Dental Materials Science Nagasaki University School Of Dentistry
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Hisatsune Kunihiro
Department Of Dental And Biomedical Materials Science Unit Of Basic Medical Sciences Graduate School
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Takuma Y
Department Of Dental And Biomedical Materials Science Unit Of Basic Medical Science Graduate School
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Tanaka Yasuhiro
Department Of Dental Materials Science Nagasaki University School Of Dentistry Japan
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Tanaka Yasuhiro
Department Of Advance Materials Science Faculty Of Engineering Kagawa University
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