`ᆺ䝏䝍䞁ྜ㔠䛾䝦䝔䝻ᵓ㐀ไᚚ㻌 Keyword : ඖ⣲೫ᯒ䚸➨2┦ᯒฟ䚸ኚᙧ䝰䞊䝗 ⊂❧⾜ᨻἲே㻌 ≀㉁䞉ᮦᩱ◊✲ᶵᵓ ᄂᆮỉ Ꮡ ㍍㔞㧗ᙉᗘ䛷⪏㣗ᛶ䛻䜒ඃ䜜䛯`ᆺ䝏䝍䞁ྜ㔠䛿⯟✵ᶵ䜔ᾏὒᵓ㐀≀䜈䛾ᗈ⠊ᅖ䛾㐺⏝ 䛜ᮇᚅ䛥䜜䛶䛔䜛䚹୍᪉`ᆺ䝏䝍䞁ྜ㔠䛻ῧຍ䛥䜜䛶䛔䜛Mo䜔Nb䛸䛔䛳䛯ඖ⣲䛿ྜ㔠ෆ䛷 ᆒ୍䛻ศᩓ䠄೫ᯒ䠅䛧䜔䛩䛟䚸䛭䛾ゎᾘ䛻䛿వศ䛺ᕤ⛬䜢ᚲせ䛸䛧䚸䝁䝇䝖ቑ䛾ཎᅉ䛸䛺䜛䚹 ᄂᆮỉ ཀྵẟ ᮦᩱ୰䛾ඖ⣲೫ᯒ䜢ゎᾘ䛩䜛䛾䛷䛿䛺䛟䚸㏫䛻೫ᯒ䜢⏝䛧䛶䝦䝔䝻ᵓ㐀ไᚚ䜢⾜䛖䛣䛸䛷 㧗ᙉᗘ䛸㧗ಙ㢗ᛶ䜢ව䛽ഛ䛘䛯`ᆺ䝏䝍䞁ྜ㔠䛾㛤Ⓨ䜢┠ᣦ䛩 䠄1䠅ᙉ➨2┦䠄┦䠅䛾䝦䝔䝻ศᩓᯒฟ䛻䜘䜛ᐊ ᘬᙇᙉᗘ䛸◚᩿ఙ䜃䛾୧❧ 䠄2䠅೫ᯒ䛻䜘䜛ኚᙧ䝰䞊䝗䛾ᒁᡤኚ䜢⏝䛧䛯ᐊ ᘬᙇᙉᗘ䛸ᆒ୍ఙ䜃䛾୧❧ இέᇢᄂᆮἚἦἕἁἋ ᙉ➨㻞┦㻔0 ┦㻕䛾䝦䝔䝻ศᩓᯒฟ㻌 SEM䠄ᑕ㟁Ꮚീ䠅 ೫ᯒ䛻䜘䜛ኚᙧ䝰䞊䝗䛾ᒁᡤኚ㻌 ᒙ≧䛾೫ᯒ⤌⧊䜢ᣢ䛴 Ti-15Mo-5Zrྜ㔠䛻4% 䛾ረᛶኚᙧ䜢ຍ䛘䜛䛸 ೫ᯒ䛻ἢ䛳䛶పᙉᗘ䞉 㧗ᘏᛶ䛾ᬗኚᙧ䛸㧗 ᙉᗘ䞉పᘏᛶ䛾䛩䜉䜚 ኚᙧ䛾2䛴䛾ኚᙧ䝰䞊 䝗䛜ΰᅾ䛧䛶⌧䜜䜛䚹 ◳䛥ศᕸ 䛩䜉䜚ኚᙧ ᬗኚᙧ 䛩䜉䜚ኚᙧ Ti-12mass%Moྜ㔠Წᅽᘏᮦᅽᘏᆶ┤᩿㠃䛾 ≧䛾 Mo೫ᯒ⤌⧊䛸┦ᯒฟᚋ䛾◳䛥ศᕸ䚹Mo㔞䛾㐪䛔䛻䜘 䜚┦䛾ᯒฟ㔞䜢ኚ䛘䚸◳䛥䜢ᒁᡤⓗ䛻ኚ䛥䛫䛶䛔䜛䚹 ≧೫ᯒ⤌⧊䛾᭷↓䛻䜘䜛 ᐊ ᘬᙇ≉ᛶ䜈䛾ᙳ㡪䚹 ೫ᯒ䛾䛒䜛ᮦᩱ䛾᪉䛜ྠ䛨 ᘬᙇᙉᗘ䛷䜘䜚◚᩿ఙ䜃䛜 䛝䛟䛺䛳䛶䛚䜚䚸ᙉᗘ-ᘏᛶ 䝞䝷䞁䝇䛜ྥୖ䛩䜛䚹 ૨ᴾ ྂᴾ ᆒ୍ఙ䜃 ᬗኚᙧ䛾䜏⏕䛨䜛Ti-15Moྜ㔠䚸೫ᯒ䜢䛺䛟 䛧䛶䛩䜉䜚ኚᙧ䛾䜏䛸䛧䛯Ti-15Mo-5Zrྜ㔠䛻 ᑐ䛧䛶೫ᯒ䛻䜘䛳䛶ᬗኚᙧ䛸䛩䜉䜚ኚᙧ䜢ΰ ᅾ䛥䛫䜛䛣䛸䛷ᙉᗘ䛸ᆒ୍ఙ䜃䛜୧❧䛩䜛䚹 㻌 S. Emura, X. Min, S. Ii, K. Tsuchiya: KEY ENG. MATER. 551 (2013) 180-185 㻌 X.H. Min, K. Tsuzaki, S. Emura and K. Tsuchiya: Mater. Sci. Eng. A 554 (2012) 53-60 LJƱNJ ܱဇ҄ƷႸ z ᙉ➨2┦┦)䛾䝦䝔䝻ᯒฟ䛻䜘䜛◳䛥䛾ᒁᡤኚ㻌 㻌z㻌 㻌೫ᯒ⤌⧊䛻䜘䜛ᮦᩱ≉ᛶྥୖᶵᵓ䛾ゎ᫂㻌 z 䝴䝡䜻䝍䝇ඖ⣲䠄㕲➼䠅䛻䜘䜛೫ᯒ⤌⧊䛾㐀䜚㎸䜏㻌 Z㻌 ᘬᙇᙉᗘ䠉◚᩿ఙ䜃䛾䝞䝷䞁䝇䛾ྥୖ 㻌 z 2✀㢮䛾ኚᙧ䝰䞊䝗䠄䛩䜉䜚ኚᙧ䚸ᬗኚᙧ䠅䛾ΰᅾ㻌 㻌 㻌 㻌 㻌 㻌 z ೫ᯒ䜢⏝䛧䛯䝦䝔䝻ᵓ㐀ไᚚᡭἲ䛾୍⯡㻌 Z㻌 ᘬᙇᙉᗘ䠉ᆒ୍ఙ䜃䛾䝞䝷䞁䝇䛾ྥୖ㻌 z ᕼᑡඖ⣲䝣䝸䞊䛾䝴䝡䜻䝍䝇䝏䝍䞁ྜ㔠䜈䛾㐺⏝㻌 㻌 ᵓ㐀ᮦᩱ䝴䝙䝑䝖㻌 ⤌⧊タィ䜾䝹䞊䝥㻌 Ụᮧ㻌 ⪽ 㻌 E-mail : EMURA.Satoshi䖃nims.go.jp URL : http://www.nims.go.jp/group/msdg/index-j.html㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 — 416 —
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