䝏䝍䞁ྜ㔠䛾ᴟప ᮦᩱ≉ᛶ䛾㧗ᛶ⬟ Keyword : Ti-6Al-4V䚸㘫㐀ᮦ䚸㔪≧⤌⧊䚸⑂ປ≉ᛶ䚸◚ቯ㠎ᛶ ⊂❧⾜ᨻἲே㻌 ≀㉁䞉ᮦᩱ◊✲ᶵᵓ ᄂᆮỉ Ꮡ ᅜ⏘Ᏹᐂ䝻䜿䝑䝖䜶䞁䝆䞁䛾ᛶ⬟ྥୖ䛾䛯䜑䛻䚸䝏䝍䞁ྜ㔠䛾ᴟప 䛻䛚䛡䜛ᮦᩱ≉ᛶ䛾 㧗ᛶ⬟䛻ྲྀ䜚⤌䜣䛷䛔䜛䚹ᨵⰋᮦᩱ䛾⏝䛻䛿㧗ಙ㢗ᛶ䞉Ᏻᛶ䛜せồ䛥䜜䚸ᐇ⏝ ᗘ䛷䛾༑ศ䛺ᮦᩱ≉ᛶホ౯䛾✚䛿ᚲせྍḞ䛷䛒䜛䚹㼀㼕㻙㻢㻭㼘㻙㻠㼂ྜ㔠㘫㐀ᮦ䛾䝭䜽䝻⤌ ⧊䜢ኚ䛘䛯ᮦᩱ䜢⏝䛔䛶䚸᳨ウ䜢⾜䛳䛶䛔䜛䚹㻌 ᄂᆮỉ ཀྵẟ ⌧ᅾᅜ⏘Ᏹᐂ䝻䜿䝑䝖䜶䞁䝆䞁䛻⏝䛥䜜䛶䛔䜛㼀㼕㻙㻡㻭㼘㻙㻞㻚㻡㻿㼚㻌㻱㻸㻵ྜ㔠䜘䜚ඃ䜜䛯⑂ປᙉᗘ 䛸◚ቯ㠎ᛶ䛾≉ᛶྥୖ䛜㐩ᡂ䛷䛝䜜䜀䚸ప䝁䝇䝖䜒ᅗ䜜䜛䚹ᴟప 䠄㻞㻜㻌㻷䜺䝇䝦䝸䜴䝮⎔ ቃୗ䠅䛚䛡䜛≉ᛶホ౯䛚䜘䜃◚ቯᣲື䛾ゎ᫂䛻䜘䜚䚸ඃ䜜䛯⑂ປᙉᗘ㻙◚ቯ㠎ᛶ䝞䝷䞁䝇 䛜ᚓ䜙䜜䜛⤌⧊䜢᫂䜙䛛䛻䛧䛯䛔䚹㻌 இέᇢᄂᆮἚἦἕἁἋ 㼀㼕㻙㻢㻭㼘㻙㻠㼂ྜ㔠䜢⏝䛔䛶䚸` ᇦ䜎䛷ຍ⇕ᚋ䚸⅔෭䚸✵෭䚸Ỉ෭䜢䛧㔪≧⤌⧊䜢ኚ䛘䛯ᮦᩱ䛷䚸㧗䝃䜲䜽䝹㻌 ⑂ປ≉ᛶ䛚䜘䜃◚ቯ㠎ᛶ䛾ホ౯䜢⾜䛳䛯䚹㻌⅔෭ᮦ䛚䜘䜃✵෭ᮦ䛿䚸㼀㼕㻙㻡㻭㼘㻙㻞㻚㻡㻿㼚㻌㻱㻸㻵ྜ㔠䜢ୖᅇ䜛≉ᛶ䜢㻌 ♧䛩䛣䛸䛜䜟䛛䛳䛯䚹㻌 㻌 㘫㐀ᮦ 㻔㼎㻕 㻔㼍㻕㻌 㻔㼏㻕 㻔㼐㻕 㻞㻜㻜! 㼙 ◚ቯ㠎ᛶ, K / MPam 㻞㻜㻜! 㼙 㻞㻜! 㼙 㼀㼕㻡㻞㻡㻱㻸㻵㻌x 㻝㻤㻜 䠄䠅 ⅔෭ 㻔㔪≧⤌⧊㻕 㻔➼㍈q 㻕㻌ᾮయỈ⣲୰ ୰ ✵෭ 㻔㔪≧⤌⧊㻕 # 㻟㻜㻜㻌㻔ΰྜ⤌⧊㻕 # 㻟㻡㻜㻌㻔ΰྜ⤌⧊㻕 Ỉ෭ 㻔㔪≧⤌⧊㻕 㻝㻜㻣ᅇ⑂ປᙉᗘ㻘㻌㻹㻼㼍 㻞㻜㻜! 㼙 㻞㻜㻌㻷䛻䛚䛡䜛㼀㼕㻙㻢㻭㼘㻙㻠㼂ྜ㔠䚸㻌㼀㼕㻙㻢㻭㼘㻙㻠㼂㻌㻱㻸㻵ྜ㔠䛚䜘 䜃㼀㼕㻙㻡㻭㼘㻙㻞㻚㻡㻿㼚㻌㻱㻸㻵ྜ㔠䛾㻝㻜㻣ᅇ⑂ປᙉᗘ䛸◚ቯ㠎ᛶ䛾 㛵ಀ㻌 㼀㼕㻙㻢㻭㼘㻙㻠㼂㻌ྜ㔠䛾ග㢧⤌⧊┿㻌 㻔㼍㻕䠖㻔q 㻗` 㻕㻙↝㕌ᮦ㻘㻌㻔㼎㻕䠖` 㻌㻔㻲㻯㻕㻌⅔෭ᮦ㻘㻌 㻔㼏㻕䠖` 䠄㻭㻯㻕㻌✵෭ᮦ㻘㻌㻔㼐㻕䠖` 䠄㼃㻽㻕㻌Ỉ෭ᮦ㻌 ૨ᴾ ྂᴾ 㼀㼕㻢㻠㻱㻸㻵 ⅔෭ 㻔㔪≧⤌⧊㻕 䞉T. Yuri, Y. Ono, T. Ogata and H. Sunakawa : Effect of microstructure on high-cycle fatigue properties for Ti-6Al-4V alloy forging at cryogenic temperatures, Advances in Cryogenic Engineering [Materials],Vol.60,pp.27-33. LJƱNJ ܱဇ҄ƷႸ z Ti-6Al-4Vྜ㔠㘫㐀ᮦ䛻`-anneal䜢䛧䛯⅔෭ᮦ䛚 䜘䜃✵෭ᮦ䛾ᴟప 䛻䛚䛡䜛107ᅇ⑂ປᙉᗘ-◚ቯ 㠎ᛶ䝞䝷䞁䝇䛿䚸Ti-5Al-2.5Sn ELIྜ㔠䜘䜚ඃ䜜䛶 䛔䜛 z ᅜ⏘Ᏹᐂ䝻䜿䝑䝖䜶䞁䝆䞁ᮦᩱ➼䛾ᴟప 䛷⏝ 䛥䜜䜛ẚ㍑ⓗ䝃䜲䝈䛜䛝䛟䚸⑂ປ≉ᛶ䛚䜘䜃◚ ቯ㠎ᛶ䛜せồ䛥䜜䜛㒊ᮦ ᮦᩱಙ㢗ᛶホ౯䝴䝙䝑䝖㻌 ᴟ㝈⎔ቃᮦᩱ䜾䝹䞊䝥㻌 ⏤㻌 ဴ⨾㻌 E-mail : YURI.Tetumi䖃nims.go.jp URL : http://www.nims.go.jp/cmg/ — 82 —
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