Memoirs of National Institute of Technology, Akashi College, Japan No.57 (2015.2) ࣮ࣜࣥ┦⣔ࢫࢸࣥࣞࢫ㗰ᯈࡢᶵᲔⓗ≉ᛶ್ᵓᡂᘧ ⣽ぢ⋞Ṋ ୕ዲᓫኵ Mechanical Properties and the Stress-Strain Model of Lean Duplex Stainless Steel Plates Genbu HOSOMI, Takao MIYOSHI ABSTRACT Stainless steel is still often regarded as only suitable for specialized applications due to its high initial material cost. The cost of stainless steel is sensitive to its nickel content. Austenitic grades which are most commonly adopted in stainless steels have 8%-10% nickel content. Recently developed lean duplex stainless steel (EN 1.4162) has far lower nickel content, around 1.5%, and hence lower cost. Despite the low nickel content, corrosion resistance of lean duplex stainless steel is similar to that of austenitic stainless steel. For this reason, structural applications of lean duplex stainless steel are attracting attention. However, the effect of variation in mechanical properties of the steel on structural performance is not cleared. In this study, mechanical properties and their variations are assessed based on material coupon test results, and the applicability of an existing stress-strain model to the steel is verified. Also, expressions for estimating mechanical properties for given values of 0.2% proof stress and tensile strength are developed. The expressions are compared with existing coupon test results and shown to be reasonably accurate for lean duplex stainless steel. Based on the expressions, it is possible to construct the entire stress-strain curve from 0.2% proof stress and tensile strength. KEY WORDS: lean duplex stainless steel, mechanical properties, variation, stress-strain model 㸯㸬ࡣࡌࡵ 㛗ᑑࡢಁ㐍ࡸLCC⦰ῶࡢほⅬࡽࡑࡢᅵᮌᵓ㐀≀ ୍⯡ⓗ࡞ࢫࢸࣥࣞࢫ㗰ࡣᮦᩱࢥࢫࢺࡀ㧗࠸ࡓࡵ㸪≉ ࡢά⏝ࡀὀ┠ࡉࢀ࡚࠸ࡿ 1)㸬 ⪏㣗ᛶࡀせồࡉࢀࡿᅵᮌᵓ㐀≀ࡢ୍㒊㝈ᐃⓗ ࣮ࣜࣥ㗰ࡣ⌧≧࡛ࡣࢫࢸࣥࣞࢫ㗰ᵓ㐀≀ࡢタィᇶ‽ ⏝ࡉࢀ࡚ࡁࡓ㸬ࢫࢸࣥࣞࢫ㗰ࡢᮦᩱࢥࢫࢺࡣࢽࢵࢣࣝ 2) ྵ᭷㔞ᕥྑࡉࢀ㸪᭱ࡶ୍⯡ⓗ⏝ࡉࢀ࡚࠸ࡿ ࡸタィἲ㛵ࡍࡿ◊✲ࡀ⢭ຊⓗ㐍ࡵࡽࢀ࡚࠸ࡿ 3), 4)㸬 SUS304 ➼ࡢ࣮࢜ࢫࢸࢼࢺ⣔ࢫࢸࣥࣞࢫ㗰࡛ࡣ 8㹼 ୍⯡ⓗ㸪㗰ᮦࡢᶵᲔⓗ≉ᛶ್ࡣࡤࡽࡘࡁࢆ᭷ࡋ㸪ᯈ 10%ࡢࢽࢵࢣࣝࢆྵࡴ㸬ࡑࢀᑐࡋ࡚㸪㏆ᖺ㛤Ⓨࡉࢀ ཌ౫Ꮡᛶࢆ♧ࡍሙྜࡶ࠶ࡿ 5)㸬ࡑࢀࡽࡣ㗰ᵓ㐀≀ࡢ⤊ ࡓ࣮ࣜࣥ┦⣔ࢫࢸࣥࣞࢫ㗰㸦௨ୗ㸪࣮ࣜࣥ㗰␎⛠ ᒁᙉᗘᙳ㡪ࢆཬࡰࡍせᅉ࡛࠶ࡿࡶ㛵ࢃࡽࡎ㸪࣮ࣜ ࡍࡿ㸧ࡣ㸪᭱ᑡ 1.5%ࡲ࡛ࢽࢵࢣࣝྵ᭷㔞ࢆ๐ῶࡍࡿࡇ ࣥ㗰ࡢᶵᲔⓗ≉ᛶ್ࡢࡤࡽࡘࡁࡸᯈཌ౫Ꮡᛶࡘ࠸࡚ ࡼࡗ࡚ᮦᩱࢥࢫࢺࡀపῶࡉࢀ࡚࠸ࡿ㸬ࢽࢵࢣࣝྵ ࡣ᫂☜ࡉࢀ࡚࠸࡞࠸㸬ᮏ◊✲࡛ࡣ㸪࣮ࣜࣥ㗰ࡋ࡚ ᭷㔞ࡢ๐ῶࡶ㛵ࢃࡽࡎ࣮ࣜࣥ㗰ࡢ⪏㣗ᛶࡣ SUS304 EN 10088-46)ࡢ 1.4162 ࢆᑐ㇟㸪ࡑࡢᶵᲔⓗ≉ᛶ್ࡢࡤ ྠ➼࡛࠶ࡾ㸪ᵓ㐀≀ࡢ࣑ࢽ࣐࣒࣓ࣥࢸࢼࣥࢫ㸪㉸ ࡽࡘࡁࡸᯈཌ౫Ꮡᛶࡘ࠸࡚᫂☜ࡍࡿࡇࢆ┠ⓗ * ࡋ࡚㸪ᮦᩱヨ㦂ࡼࡗ࡚ᛂຊ㸫ࡦࡎࡳ㛵ಀࢆᢕᥱࡍࡿ ⥙⨶ࡉࢀ࡚࠸࡞࠸ࡓࡵ㸪࣮ࣜࣥ㗰ᵓ㐀≀ࡢ⤊ᒁᙉᗘ ᚨᓥᏛᕤᏛ㒊㸪**㒔ᕷࢩࢫࢸ࣒ᕤᏛ⛉ 15 明石工業高等専門学校研究紀要 第57号（平成27年2月） A 㒊ヲ⣽ᅗ 800 800 600 600 L2 L4 T1 T3 T5 400 200 ᛂຊı (N/mm2) ᛂຊı (N/mm2) ᅗ㸫 ᮦᩱヨ㦂∦ L3 L5 T2 T4 400 䝸䞊䞁㗰 (L2) SUS304 SS400 SM570 200 䝸䞊䞁㗰 (T1) SUS329J3L SM490Y 0 0 ࡦࡎࡳİ (%) 0 ᅗ㸫 ࣮ࣜࣥ㗰ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ 2 4 6 䜂䛪䜏İ (%) 8 10 ᅗ㸫 ᛂຊ㸫ࡦࡎࡳ᭤⥺ࡢẚ㍑ ࡶ㸪᪤ ࡢᮦᩱヨ㦂⤖ᯝ 3), 4)ࡶㄪᰝ㸪ศᯒࡍࡿ㸬 ྥ 5 య㸪 ᅽᘏ┤ゅ᪉ྥ 5 యࡢྜィ 10 యࢆ〇సࡋࡓ㸬 ࡲࡓ㸪࣮ࣜࣥ㗰ᵓ㐀≀ࡢ⤊ᒁᙉᗘゎᯒྥࡅ࡚㸪᪤Ꮡ ௨㝆࡛ࡣࡑࢀࡒࢀᅽᘏ᪉ྥ㸪ྠ┤ゅ᪉ྥヨ㦂∦ࡢ㢌ᩥ 7) ࡢᵓᡂᘧ ࡢྠ㗰ࡢ㐺⏝ᛶࡘ࠸࡚ࡶ᳨ドࡍࡿ㸬୍ Ꮠ L㸪T㸪ࡑࡢᚋ␒ྕࢆࡋ࡚ L2 ࡢࡼ࠺ヨ㦂∦ ⯡ⓗ࡞ᮦᩱつ᱁ 6), 8)࡛ࡣ㸪ࢫࢸࣥࣞࢫ㗰ࡢᶵᲔⓗ≉ᛶ್ ࢆ⾲グࡍࡿ㸬ヨ㦂ࡣ୍ᐃࡢࡦࡎࡳ㏿ᗘ 0.0003sec-1 ࡼ ࡋ࡚ 0.2%⪏ຊ㸪ᘬᙇᙉᗘࡸ◚᩿ఙࡧࡢࡳࡀつᐃࡉࢀ ࡿᘬᙇ㍕Ⲵࡋࡓ㸬࡞࠾㸪L1 ヨ㦂∦ࡘ࠸࡚ࡣ㍕Ⲵ᪉ ࡚࠸ࡿ㐣ࡂ࡞࠸ࡓࡵ㸪ࡑࢀࡽᇶ࡙࠸࡚ᵓᡂᘧࢆ☜ ἲഛࡀ࠶ࡗࡓࡓࡵ㝖እࡋ࡚⤖ᯝࢆᩚ⌮ࡋࡓ㸬 ❧ࡍࡿࡇࡣᅔ㞴࡛࠶ࡿ㸬ᮏ◊✲࡛ࡣᮦᩱヨ㦂⤖ᯝࢆ ᩚ⌮ࡋ㸪ᵓᡂᘧࡢᮦᩱᐃᩘࡢỴᐃᚲせ࡞ᶵᲔⓗ≉ᛶ 㸰㺃㸰 ヨ㦂⤖ᯝ ್㸪ᮦᩱつ᱁ࡸ࣑ࣝࢩ࣮ࢺ࠼ࡽࢀ࡚࠸ࡿ 0.2%⪏ 㸰㺃㸰㺃㸯 ᛂຊ㸫ࡦࡎࡳ㛵ಀ ຊࡸᘬᙇᙉᗘ㛫ࡢ┦㛵ࢆㄪࡿ㸬ࡑࢀࡼࡗ࡚㸪0.2% ヨ㦂∦ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࢆᅗ㸫2 ♧ࡍ㸬ࡇࢀ ⪏ຊࡸᘬᙇᙉᗘࡽࡑࢀࡽࡢᶵᲔⓗ≉ᛶ್ࢆᐇ⏝ⓗ࡞ ࡼࡾ㸪࣮ࣜࣥ㗰ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࡣᅽᘏ᪉ྥࡼࡿ ⢭ᗘ࡛᥎ᐃ࡛ࡁࡿᘧࡢᥦ♧ࡶ┠ⓗࡍࡿ㸬 ␗᪉ᛶࢆ♧ࡍࡇࡀࢃࡿ㸬ᅗ㸫3 ࡣ࣮ࣜࣥ㗰 L2㸪 T1 ᵓ㐀⏝Ⅳ⣲㗰 SS400㸪SM490Y㸪SM570㸪࣮࢜ࢫ 㸰㸬ᮦᩱヨ㦂 ࢸࢼࢺ⣔ࢫࢸࣥࣞࢫ㗰 SUS304㸪┦⣔ࢫࢸࣥࣞࢫ㗰 㸰㺃㸯 ヨ㦂᪉ἲ SUS329J3L ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࢆẚ㍑ࡋࡓ㸬ྠᅗࡼࡾ㸪 ᮏ◊✲࡛ࡣ㸪ヨ㦂ᶵࡢᐜ㔞ࢆ຺ࡋ࡚බ⛠ᯈཌ 6mm ࣮ࣜࣥ㗰ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࡣ㸪 SUS304 ࡸ SUS329J3L ࡢ EN 1.4162 ⇕㛫ᅽᘏ㗰ᯈࢆ 3mm ษ๐ࡋࡓᅗ㸫1 ྠᵝ᫂☜࡞㝆అⅬࡸ㝆అᲴࢆᣢࡓ࡞࠸ࣛ࢘ࣥࢻࣁ ♧ࡍヨ㦂∦ࢆ⏝࠸ࡓ㸬ྠᅗ୰ࡢ A 㒊ࡣఙࡧィࢆタ⨨ࡍ ࢘ࢫᆺࡢ᭤⥺ࢆ♧ࡍࡇࡀࢃࡿ㸬 ࡿࡓࡵࡢ✺㉳࡛࠶ࡾ㸪ྠᵝࡢヨ㦂∦ࢆ⏝࠸ࡓࡇࢀࡲ࡛ 㸰㺃㸰㺃㸰 ᶵᲔⓗ≉ᛶ್ ࡢᮦᩱヨ㦂ࡼࡗ࡚㸪ࡑࢀࡀヨ㦂⤖ᯝཬࡰࡍᙳ㡪ࡢ ᮏ◊✲࡛ࡣ㸪ᶵᲔⓗ≉ᛶ್ࡋ࡚ᙎᛶಀᩘ㸪0.2%⪏ ࡞࠸ࡇࡀ☜ㄆࡉࢀ࡚࠸ࡿ㸬ࡲࡓ㸪ྠ㗰ᯈࡢᅽᘏ᪉ྥ ຊ㸪ᘬᙇᙉᗘຍ࠼࡚㸪タィᇶ‽ 2)࠾࠸࡚ẚ㝈⏺ ࡼࡿ␗᪉ᛶࡢᙳ㡪ࢆᢕᥱࡍࡿࡓࡵ㸪ヨ㦂∦ࡣᅽᘏ᪉ ࡋ࡚ᐃ⩏ࡉࢀ࡚࠸ࡿ 0.01%⪏ຊ㸪ᚋ㏙ࡢᵓᡂᘧࡢᮦ 16 Memoirs of National Institute of Technology, Akashi College, Japan No.57 (2015.2) ⾲㸫 ᮦᩱヨ㦂ࡽᚓࡽࢀࡓᶵᲔⓗ≉ᛶ್ ヨ㦂∦ ᙎᛶಀᩘ E (kN/mm 2 ) 0.01%⪏ຊ ı 0.01 (N/mm 2 ) 0.2%⪏ຊ ı 0.2 (N/mm 2 ) 1%⪏ຊ ı1 (N/mm 2 ) 10%ࡦࡎࡳ ᛂຊ ı 10 (N/mm 2 ) ᘬᙇᙉᗘ ıu (N/mm 2 ) ᆒ୍ఙࡧ İu (%) ◚᩿ఙࡧ İf (%) L2 198.4 377 510 557 681 735 32 53 L3 197.7 382 512 556 678 733 30 47 L4 198.2 385 517 559 679 733 30 48 L5 195.7 374 510 561 680 733 31 47 ᖹᆒ T1 197.5 379 512 558 679 733 31 49 213.9 418 561 602 711 750 25 37 T2 212.5 425 564 604 716 754 25 39 T3 213.5 428 566 607 716 755 25 39 T4 214.2 424 560 602 715 757 26 44 T5 214.0 415 556 597 709 751 26 39 ᖹᆒ 213.6 422 561 602 713 753 26 40 ᖹᆒ 206.5 403 539 583 698 745 28 44 つ᱁್ - - - - - - 641 - 䍻660 750 - ࣑ࣝࢩ࣮ࢺ್ 䍻450 596 䍻25 54 ㍕Ⲵ᪉ྥ ᅽᘏ᪉ྥ ┤ゅ᪉ྥ 30 ⾲㸫 ᶵᲔⓗ≉ᛶ್ࡢẚ㍑ ᩱᐃᩘࡢỴᐃᚲせ࡛࠶ࡿ 1%⪏ຊ㸪10%ࡦࡎࡳᛂຊ ࢆྲྀࡾୖࡆࡿ㸬 ヨ㦂∦ࡢᶵᲔⓗ≉ᛶ್㸪ࡑࢀࡽࡢᖹᆒ್㸪࣑ࣝࢩ 㗰✀ ࣮ࢺ್㸦ᅽᘏ┤ゅ᪉ྥᑐࡍࡿࡶࡢ㸧ࢆつ᱁್ 6) ࡶ⾲㸫1 ♧ࡍ㸬ࡇࢀࡼࡾ㸪0.2%⪏ຊ㸪ᘬᙇᙉᗘ㸪 ◚᩿ఙࡧࡣ࠸ࡎࢀࡶつ᱁್ࢆ‶ࡓࡋ࡚࠸ࡿࡇࡀࢃ ࡿ㸬ヨ㦂⤖ᯝ࣑ࣝࢩ࣮ࢺ್ࡢᕪ␗ࡣヨ㦂ࡢࡦࡎ 䝸䞊䞁㗰 ࡳ㏿ᗘࡢ┦㐪ࡼࡿࡶࡢ⪃࠼ࡽࢀࡿ㸬 0.2 ⪏ຊ ᙎᛶ ı 0.2 ㍕Ⲵ ಀᩘ ( 㝆అ E ᪉ྥ㻖 ı ) (kN/mm 2 ) ᛂຊ y (N/mm 2 ) ᘬᙇ ᙉᗘ ıu (N/mm 2 ) 㝆అẚ ı 0.2 /ıu (ı y /ı u ) L 197.5 512 733 0.70 T 213.6 561 753 0.75 L/T 0.92 0.91 0.97 0.94 ⾲㸫2 ࡣᙎᛶಀᩘ㸪0.2%⪏ຊࡲࡓࡣ㝆అᛂຊ㸪ᘬ SS400 L 219.8 392 460 0.85 ᙇᙉᗘ㝆అẚࡘ࠸࡚㸪࣮ࣜࣥ㗰㸦ᅽᘏ᪉ྥࡈࡢ SM490Y L 214.4 405 535 0.76 ヨ㦂⤖ᯝࡢᖹᆒ್㸧Ⅳ⣲㗰 SS400㸪SM490Y㸪SM570㸪 SM570 L 217.7 561 649 0.86 L 175.1 263 707 0.37 0.37 ࣮࢜ࢫࢸࢼࢺ⣔ࢫࢸࣥࣞࢫ㗰 SUS304㸪┦⣔ࢫࢸࣥ SUS304 ࣞࢫ㗰 SUS329J3L ࢆẚ㍑ࡋࡓ㸬ࡇࢀࡼࡾ㸪࣮ࣜࣥ㗰 SUS329J3L ࡢ 0.2%⪏ຊ㸪ᘬᙇᙉᗘ㝆అẚࡣྠ➼࡛࠶ ࡾ㸪࣮ࣜࣥ㗰ࡢ 0.2%⪏ຊ SM570 ࡢ㝆అᛂຊࡶᑐᛂ SUS329J3L ࡋ࡚࠸ࡿࡇࡀࢃࡿ㸬ࡲࡓ㸪࣮ࣜࣥ㗰ࡢ㝆అẚࡣ T 180.4 255 687 L/T 0.97 1.03 1.03 1.00 L 183.8 515 735 0.70 T 199.3 542 758 0.72 L/T 0.92 0.95 0.97 0.98 ὀ䠅䠆L䠖ᅽᘏ᪉ྥ䠈T 䠖ᅽᘏ┤ゅ᪉ྥ SUS304ࡣཬࡤ࡞࠸ࡶࡢࡢSM570ࡼࡾᑠࡉࡃ㸪 SM570 ẚ࡚ࡦࡎࡳ◳≉ᛶඃࢀ࡚࠸ࡿࡇࡀࢃࡿ㸬 ྥྠ┤ゅ᪉ྥヨ㦂∦ࢆษࡾฟࡋ࡚㸪ᘬᙇヨ㦂ᅽ ྠ⾲ࡣ㸪ᶵᲔⓗ≉ᛶ್ࡢᅽᘏ᪉ྥྠ┤ゅ᪉ྥࡢẚ ⦰ヨ㦂ࡀᐇࡉࢀ࡚࠸ࡿ㸬 ࡶ♧ࡋࡓࡀ㸪࣮ࣜࣥ㗰ࡣ SUS304 ẚ࡚ࡸࡸᅽᘏ᪉ ྥࡼࡿ␗᪉ᛶࡢࡁ࠸ࡇࡀࢃࡿ㸬 㸱㺃㸯 ᯈཌ౫Ꮡᛶ 0.2%⪏ຊ ı0.2㸪ᘬᙇᙉᗘ ıu ᯈཌࡢ㛵ಀࢆࡑࢀࡒࢀ 㸱㸬ᶵᲔⓗ≉ᛶ್ࡢᯈཌ౫Ꮡᛶࡤࡽࡘࡁ ᅗ㸫4㸪5 ♧ࡍ㸬ࡓࡔࡋ㸪ᅗ㸫4㸪5 ࡢ⦪㍈ࡣࡑࢀࡒࢀ 㝈ࡽࢀࡓࢹ࣮ࢱ࡛ࡣ࠶ࡿࡶࡢࡢ㸪ᮏ◊✲࡛ᐇࡋࡓ ⾲㸫1 ♧ࡍ 0.2%⪏ຊ㸪ᘬᙇᙉᗘࡢつ᱁್ ı0.2EN㸪ıuEN 3),4) ࢆ㞟㸪ศᯒ ࡛↓ḟඖࡋ࡚࠸ࡿ㸬ࡲࡓ㸪ྠᅗ୰ࡢ 0.2%⪏ຊ㸪ᘬᙇ ࡍࡿࡇࡼࡗ࡚㸪ᶵᲔⓗ≉ᛶ್ཬࡰࡍᯈཌࡢᙳ㡪 ᙉᗘࡣヨ㦂⤖ᯝࡈࢩࣥ࣎ࣝࢆኚ࠼࡚ࣉࣟࢵࢺࡋ㸪 ᶵᲔⓗ≉ᛶ್ࡢࡤࡽࡘࡁࡘ࠸࡚ㄪᰝࡋࡓ㸬࡞࠾㸪 ཧ⪃ࡲ࡛⤖ᯝ㸪ᅽᘏ᪉ྥᘬᙇヨ㦂㸦௨㝆࡛ࡣ LT ᮦᩱヨ㦂ຍ࠼࡚᪤ ࡢᮦᩱヨ㦂⤖ᯝ 3),4) ࡛ࡣ㸪ᯈཌ 4㸪6㸪8㸪10㸪12㸪15 ࠾ࡼࡧ ␎⛠ࡍࡿ㸧 㸪ྠᅽ⦰ヨ㦂㸦ྠ LC㸧 㸪ᅽᘏ┤ゅ᪉ྥᘬᙇヨ 20mm ࡢ EN 1.4162 ⇕㛫ᅽᘏ㗰ᯈࡽ㸪ࡑࢀࡒࢀᅽᘏ᪉ 㦂㸦ྠ TT㸧 㸪ྠᅽ⦰ヨ㦂㸦ྠ TC㸧ᑐࡍࡿ┤⥺ᅇᖐᘧ ᪤ ࡢ◊✲ 17 明石工業高等専門学校研究紀要 第57号（平成27年2月） 1.4 1.2 1.2 1 1 0.8 LT LC ᅇᖐᘧ (⤖ᯝ) ᅇᖐᘧ (TT) ᅇᖐᘧ (TC) 0.8 0.6 ıu/ıuEN TT TC ᅇᖐᘧ (LT) ᅇᖐᘧ (LC) 0.6 0.4 0.4 0.2 15 20 0 50 40 30 20 10 0 15 20 770㹼780 760㹼770 750㹼760 LT TT 700㹼710 㢖ᗘ(%) TT TC 430㹼440 440㹼450 450㹼460 460㹼470 470㹼480 480㹼490 490㹼500 500㹼510 510㹼520 520㹼530 530㹼540 540㹼550 550㹼560 560㹼570 LT LC 10 ᯈཌ(mm) ᅗ㸫 ᘬᙇᙉᗘᯈཌࡢ㛵ಀ ᅗ㸫 ⪏ຊᯈཌࡢ㛵ಀ 50 40 30 20 10 0 5 740㹼750 10 ᯈཌ(mm) 730㹼740 5 720㹼730 0 㢖ᗘ(%) LT TT ᅇᖐᘧ (⤖ᯝ) ᅇᖐᘧ (LT) ᅇᖐᘧ (TT) 710㹼720 ı0.2/ı0.2EN ᘬᙇᙉᗘ ıu (N/mm2) 0.2%⪏ຊ ı0.2 (N/mm2) ᅗ㸫 ᘬᙇᙉᗘࡢ㢖ᗘศᕸ ᅗ㸫 ⪏ຊࡢ㢖ᗘศᕸ ⾲㸫 ᶵᲔⓗ≉ᛶ್ࡢ⤫ィ್ ࢧࣥࣉࣝᩘ ᖹᆒ್ (N/mm 2 ) ᶆ‽೫ᕪ (N/mm 2 ) ኚືಀᩘ ್᭱ (N/mm 2 ) ᙎᛶಀᩘ E 59 0.01%⪏ຊ ı 0.01 0.2%⪏ຊ ı 0.2 1%⪏ຊ ı 1 10%ࡦࡎࡳᛂຊ ı 10 ᘬᙇᙉᗘ ı u 58 59 58 29 30 205377 361 506 568 678 737 7549 47.99 36.31 28.36 24.71 17.97 0.04 0.13 0.07 0.05 0.04 0.02 219500 442 566 625 726 772 ᭱ᑠ್ (N/mm 2 ) 95 ࣃ࣮ࢭࣥࢱࣝ (N/mm 2 ) 191000 254 431 506 636 704 217794 440 565 614 719 766 5 ࣃ࣮ࢭࣥࢱࣝ (N/mm 2 ) 192959 282 446 521 638 707 ࡶ࠶ࢃࡏ࡚♧ࡋࡓ㸬ı0.2 ࡢࢧࣥࣉࣝᩘࡣ LT ࡀ 19㸪TT ⪏ຊࡣ㸪LT ࡀ 500㹼510 N/mm2㸪TT ࡀ 560㹼570 N/mm2 ࡀ 12㸪LC ࡀ 13㸪TC ࡀ 15 ࡢྜィ 59㸪ıu ࡢࢧࣥࣉࣝᩘ ࡛᭱㢖್ࢆ♧ࡍࡢᑐࡋ࡚㸪LC ࡀ 490~500 N/mm2㸪TC ࡣ LT ࡀ 19㸪TT ࡀ 11 ࡢྜィ 30 ࡛࠶ࡿ㸬 ࡀ 500㹼510 N/mm2 ࡛᭱㢖್ࢆ♧ࡍࡇࡽ㸪␗᪉ᛶࡢ ᅗ㸫4 ࡼࡾ㸪ᅇᖐᘧࡣ࠸ࡎࢀࡶྑୗࡀࡾ࡛࠶ࡿࡇ ᙳ㡪ࡣᅽ⦰ࡼࡾࡶᘬᙇ࡛ᙉࡃ⌧ࢀࡿࡇࡀࢃࡿ㸬୍ ࡀࢃࡿ㸬⤖ᯝᑐࡍࡿᅇᖐᘧࡢ┦㛵ಀᩘࡣ-0.43 ᪉㸪ᅗ㸫7 ࡼࡾᘬᙇᙉᗘࡘ࠸࡚ࡣ㸪ᅽᘏ᪉ྥẚ ┦㛵ࡣ࠶ࡲࡾᙉࡃ࡞࠸ࡶࡢࡢ㸪࣮࢜ࢫࢸࢼࢺ⣔ࢫࢸ ࡚┤ゅ᪉ྥࡢ᪉ࡀࡁ࠸ഴྥ࠶ࡾ㸪␗᪉ᛶࡀぢཷࡅ ࣥࣞࢫ㗰 SUS304 ࡀ 0.2%⪏ຊᯈཌ౫Ꮡᛶࡀ࡞࠸ࡉ ࡽࢀࡿ㸬ࡋࡋ㸪ࡑࡢศᕸᖜࡣᅗ㸫6 ࡢ 0.2%⪏ຊẚ 9) ࢀ࡚࠸ࡿ ࡢࡣᑐ↷ⓗ㸪࣮ࣜࣥ㗰ࡣᯈཌࡢቑຍ ࡚ᑠࡉࡃ㸪ᘬᙇᙉᗘᑐࡍࡿ␗᪉ᛶࡢᙳ㡪ࡣ 0.2%⪏ ࡘࢀ࡚ 0.2%⪏ຊࡀపୗഴྥ࠶ࡿࡇࡀࢃࡿ㸬 ຊẚ࡚ᑠࡉ࠸ࡇࡀࢃࡿ㸬 ᅗ㸫5 ࡼࡾ㸪࡚ࡢᅇᖐᘧࡀഹྑୗࡀࡾ࡛࠶ࡿ ⾲㸫3 ࡣヨ㦂⤖ᯝᑐࡍࡿᙎᛶಀᩘ㸪 ẚ㝈⏺㸪 ࡶࡢࡢ㸪⤖ᯝᑐࡍࡿᅇᖐᘧࡢ┦㛵ಀᩘࡣ-0.33 ┦ 0.2%⪏ຊ 1%⪏ຊ㸪10%ࡦࡎࡳᛂຊᘬᙇᙉᗘࡘ 㛵ࡣᙅ࠸㸬ࡼࡗ࡚㸪ᘬᙇᙉᗘࡢᯈཌ౫Ꮡᛶࡣ 0.2%⪏ຊ ࠸࡚㸪ྛࢧࣥࣉࣝᩘ㸪ᖹᆒ್㸪ᶆ‽೫ᕪ㸪ኚືಀᩘ㸪 ࡢࡑࢀẚ࡚ᑠࡉ࠸ഴྥ࠶ࡿࡇࡀࢃࡿ㸬 ್᭱᭱ᑠ್㸪95㸪5 ࣃ࣮ࢭࣥࢱࣝࢆ♧ࡋࡓ㸬࡞ ࠾㸪95㸪5 ࣃ࣮ࢭࣥࢱࣝࡣṇつศᕸࢆᙜ࡚ࡣࡵ࡚ồ 㸱㺃㸰 ࡤࡽࡘࡁ ࡵ࡚࠸ࡿ㸬⾲㸫3 ࡼࡾ㸪ᙎᛶಀᩘࡣᅽᘏ᪉ྥࡼࡿ␗ ࡑࢀࡒࢀ LT㸪LC㸪TT㸪TC ᑐࡍࡿ 0.2%⪏ຊᘬ ᪉ᛶࡢᙳ㡪ࡼࡿࡤࡽࡘࡁࢆ♧ࡍ㸬ᮦᩱヨ㦂ࡼࢀࡤ ᙇᙉᗘࡢ㢖ᗘศᕸࢆᅗ㸫6㸪7 ♧ࡍ㸬ᅗ㸫6 ࡼࡾ㸪0.2% ┦⣔ࢫࢸࣥࣞࢫ㗰 SUS329J3L ࡢᙎᛶಀᩘࡶ⾲㸫2 ࡢ 18 Memoirs of National Institute of Technology, Akashi College, Japan No.57 (2015.2) 25 0.01%⪏ຊ 1%⪏ຊ ᘬᙇᙉᗘ 0.2%⪏ຊSD 10%ࡦࡎࡳᛂຊSD 20 0.2%⪏ຊ 10%ࡦࡎࡳᛂຊ 0.01%⪏ຊSD 1%⪏ຊSD ᘬᙇᙉᗘSD 㢖ᗘ(%) 15 10 5 240㹼250 250㹼260 260㹼270 270㹼280 280㹼290 290㹼300 300㹼310 310㹼320 320㹼330 330㹼340 340㹼350 350㹼360 360㹼370 370㹼380 380㹼390 390㹼400 400㹼410 410㹼420 420㹼430 430㹼440 440㹼450 450㹼460 460㹼470 470㹼480 480㹼490 490㹼500 500㹼510 510㹼520 520㹼530 530㹼540 540㹼550 550㹼560 560㹼570 570㹼580 580㹼590 590㹼600 600㹼610 610㹼620 620㹼630 630㹼640 640㹼650 650㹼660 660㹼670 670㹼680 680㹼690 690㹼700 700㹼710 710㹼720 720㹼730 730㹼740 740㹼750 750㹼760 760㹼770 770㹼780 780㹼790 0 ᛂຊı (N/mm2) ᅗ㸫 ᶵᲔⓗ≉ᛶ್ࡢ㢖ᗘศᕸ ⾲㸫 ⤫ィ್ࡢẚ㍑ ࡼ࠺␗᪉ᛶࢆ♧ࡍ㸬ࡋࡋ㸪タィᇶ‽ 2)࡛ࡣྠ㗰ࡢ 2 ᙎᛶಀᩘࢆ 200 kN/mm つᐃࡋ࡚࠸ࡿࡇࡽ㸪࣮ࣜ 㗰✀ 2 ࣥ㗰ࡢᙎᛶಀᩘࡶ 200 kN/mm ぢ࡞ࡋ࡚ࡼ࠸ᛮࢃ 0.2%⪏ຊ ı 0.2 䜎䛯䛿 㝆అᛂຊ ı y (N/mm 2 ) ࢀࡿ㸬ኚືಀᩘࡘ࠸࡚ࡣ㸪0.01%⪏ຊ㸪0.2%⪏ຊ㸪1% ⪏ຊ㸪10%ࡦࡎࡳᛂຊ㸪ᘬᙇᙉᗘࡢ㡰ᑠࡉࡃ࡞ࡗ ࡚࠸ࡿࡇࡀࢃࡿ㸬ࡇࢀࡣ㸪ᛂຊࡢୖ᪼ࡘࢀ࡚ᅽ 䝸䞊䞁㗰 SUS304 SUS316 SM570 59 78 21 9449 䝃䞁䝥䝹ᩘ 506 285 288 561 ᖹᆒ್ ᶆ‽೫ᕪ 36.31 22.94 28.86 36.80 ኚືಀᩘ 0.072 0.081 0.100 0.066 30 89 27 9449 䝃䞁䝥䝹ᩘ ᘏ᪉ྥࡼࡿ␗᪉ᛶࡢᙳ㡪ࡀᑠࡉࡃ࡞ࡿࡇࡼࡿࡶ ᘬᙇᙉᗘ ı u (N/mm 2 ) ࡢ⪃࠼ࡽࢀࡿ㸬 ᅗ㸫8 ࡣヨ㦂⤖ᯝࡽᚓࡽࢀࡓ 0.01%⪏ຊ㸪0.2% 737 642 586 588 ᶆ‽೫ᕪ 17.97 40.71 30.08 23.40 ኚືಀᩘ 0.024 0.063 0.051 0.040 ᖹᆒ್ ⪏ຊ㸪1%⪏ຊ㸪10%ࡦࡎࡳᛂຊ㸪ᘬᙇᙉᗘࡢ㢖ᗘศ ᕸ࡞ࡽࡧྛࠎᑐࡍࡿṇつศᕸ㸦SD㸧ࢆ♧ࡍ㸬ࡇࢀ ࡲࡓ㸪ᘬᙇᙉᗘ㛵ࡋ࡚ࡣ㸪SUS304㸪SUS316 ࡸ SM570 ࡼࡾ㸪0.01%⪏ຊ㸪0.2%⪏ຊ㸪1%⪏ຊ㸪10%ࡦࡎࡳ ẚ࡚࣮ࣜࣥ㗰ࡢኚືಀᩘࡀ᭱ࡶᑠࡉ࠸ࡇࡀࢃ ᛂຊ㸪ᘬᙇᙉᗘᛂຊࡢୖ᪼ࡘࢀ࡚㸪ྛṇつศᕸᙧ ࡿ㸬ࡇࡢཎᅉࡋ࡚㸪࣮ࣜࣥ㗰㛵ࡋ࡚ࡣᮏ◊✲㸪᪤ ≧ࡢศᕸ⠊ᅖࡀ⊃ࡲࡾ㸪ᑤࡗࡓᙧ≧ࡀ⌧ࢀ࡚࠸ࡿࡇ ࡢ◊✲ ࡀࢃࡿ㸬 㦂⤖ᯝᇶ࡙࠸࡚࠸ࡿࡢᑐࡋ࡚㸪SUS304㸪SUS316 ⾲㸫4 ࡣ࣮ࣜࣥ㗰㸪࣮࢜ࢫࢸࢼࢺ⣔ࢫࢸࣥࣞࢫ㗰 9) 9) 3),4) ࡶྠ୍࣓࣮࣮࢝ࡢ㗰ᯈࢆ⏝࠸ࡓᮦᩱヨ ࡸ SM570 ࡘ࠸࡚ࡣ㸪」ᩘ࣓࣮࣮࢝ࡢ࣑ࣝࢩ࣮ࢺᇶ 5) SUS304 㸪SUS316 㸪ᵓ㐀⏝Ⅳ⣲㗰 SM570 ࡢ 0.2%⪏ ࡙࠸࡚࠸ࡿࡇࡀ⪃࠼ࡽࢀࡿࡀ㸪ヲ⣽ࡣ࡛᫂࠶ࡿ㸬 ຊ㸦㝆అᛂຊ㸧ᘬᙇᙉᗘࡢᖹᆒ್㸪ᶆ‽೫ᕪኚື ಀᩘࡘ࠸࡚ࢧࣥࣉࣝᩘࡶẚ㍑ࡋࡓࡶࡢ࡛࠶ࡿ㸬 㸲㸬ᵓᡂᘧࡢ㐺⏝ᛶ ࡇࢀࡼࡾ㸪ྛ㗰ࡢࢧࣥࣉࣝᩘࡀ␗࡞ࡿࡓࡵ┦ᑐⓗ࡞ẚ ᮏ◊✲࡛ࡣ㸪࣮ࣜࣥ㗰ࡢᵓᡂᘧࡋ࡚ SUS304 ➼ࡢ ㍑ࡣᚲࡎࡋࡶ㐺ษ࡛ࡣ࡞࠸ࡀ㸪࣮ࣜࣥ㗰ࡢ 0.2%⪏ຊࡣ ࢫࢸࣥࣞࢫ㗰ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࢆ⢭ᗘࡼࡃ⾲⌧࡛ࡁ ᅽᘏ᪉ྥࡼࡿ␗᪉ᛶࡢᙳ㡪ࡀ࠶ࡿࡶ㛵ࢃࡽࡎ㸪ࡑ ࡿࡇࡀ☜ㄆࡉࢀ࡚࠸ࡿ௨ୗࡢ MRO ᭤⥺ 7)ࢆ⏝࠸ࡓ㸬 ࡢኚືಀᩘࡣ SUS304㸪 SUS316 ẚ࡚ᑠࡉࡃ㸪 SM570 ྠ᭤⥺ࡣ㸪ᅗ㸫9 ♧ࡍࡼ࠺㸪ẚ㝈⏺ࡲ࡛ࡣ⥺ᙧ ࡢ㝆అᛂຊࡢኚືಀᩘࡼࡾⱝᖸࡁ࠸ࡇࡀࢃࡿ㸬 ᙎᛶᇦ㸪 ࡑࢀ௨㝆ࡣ 2 ࡘࡢ Ramberg-Osgood ᭤⥺ࢆ 0.2% ࡇࢀࡣ㸪0.2%⪏ຊࡢỴᐃᚲせ࡞ᙎᛶಀᩘࡢࡤࡽࡘࡁ ⪏ຊⅬ࡛ࡽ⧅࠸ࡔᵓᡂᘧ࡛࠶ࡿ㸬 0 d V V V E ° V d V V H ® V E a V V ° V E bV c d V V V d V ¯ ࡣ࣮ࣜࣥ㗰ẚ࡚ SUS304㸪SUS316 ࡢ᪉ࡀࡁ࠸ࡇ p 10)㸪ྠ⾲ࡢ SUS304㸪SUS316 ࡢࢹ࣮ࢱࡣ࣑ࣝࢩ࣮ࢺ n1 n1 p p n2 ᇶ࡙ࡃࡓࡵ㸪ࡦࡎࡳ㏿ᗘࡢࡤࡽࡘࡁࡀ⪃࠼ࡽࢀࡿ㸬 0.2 19 0.2 0.2 (1)1~3 明石工業高等専門学校研究紀要 第57号（平成27年2月） ı ı10 ᛂຊı (N/mm2) 800 E0.2 E ı0.2 0.2%⪏ຊ ➨ 2 ࡢ Ramberg-Osgood ᭤⥺ E ➨ 1 ࡢ Ramberg-Osgood ᭤⥺ ẚ㝈⏺㸦ᩘ್ゎᯒୖࡢ㝆అⅬ㸧 ıp 0.002 İ0.2 İ İ10 0.1 600 ヨ㦂⤖ᯝ (ᅽᘏ) MRO᭤⥺ (ᅽᘏ) ヨ㦂⤖ᯝ (┤ゅ) MRO᭤⥺ (┤ゅ) 400 200 0 0 ᅗ㸫 052 ᭤⥺ࡢᴫ␎ᅗ 2 4 6 䜂䛪䜏İ (%) 8 10 ᅗ㸫 ᮦᩱヨ㦂⤖ᯝ 052 ᭤⥺ࡢẚ㍑ ⾲㸫 052 ᭤⥺ࡢᮦᩱᐃᩘ ヨ㦂∦ ᙎᛶಀᩘ E (kN/mm 2 ) 0.01%⪏ຊ ı 0.01 0.2%⪏ຊ ı 0.2 1%⪏ຊ ı 1 (N/mm 2 ) (N/mm 2 ) (N/mm 2 ) 10%ࡦࡎࡳᛂຊ ı 10 ◳ࣃ࣓࣮ࣛࢱ ◳ࣃ࣓࣮ࣛࢱ n1 n2 (N/mm 2 ) ᅽᘏ᪉ྥ 197.5 379.3 512.2 558.4 679.4 10.0 2.1 ┤ゅ᪉ྥ 213.6 421.9 561.3 602.2 713.4 10.5 2.0 ᖹᆒ್ 206.5 402.9 539.5 582.8 698.3 10.3 2.0 0.6 2.8 ヨ㦂⤖ᯝ ᅇᖐᘧ 2.4 ┦㛵ಀᩘ 0.88 0.4 0.55 0.6 0.65 ı0.2/ıu 0.7 0.75 0.8 0.002 ,b V 0n.12 V pn1 0.002n1V 0n.121 ,c V 0n.12 V pn1 H 0.2 § V V 0.2 · 1 ¨ H H 0.2 10 ¸, n 2 ¨ 10 V 10 V 0.2 © E0.2 ¸¹ E V 0n.12 V pn1 n1 V 0.2 V pn1 0.002n1EV 0n.121 V 0.2 E0.2 0.5 0.55 0.6 0.65 ı0.2/ıu 0.7 0.75 0.8 ᅗ㸫 ı0.01/ıu ı0.2/ıu ࡢ㛵ಀ ᅗ㸫 ı0.2/E ı0.2/ıu ࡢ㛵ಀ E0.2 0.5 ┦㛵ಀᩘ 0.84 0.5 d ᅇᖐᘧ 0.45 2.2 2 a ヨ㦂⤖ᯝ 0.55 ı0.01/ıu ı0.2/E (10-3) 2.6 ࡍ㸬ࡇࢀࡼࡾ㸪ᅽᘏ᪉ྥࡼࡽࡎᴫࡡ◳ࣃ࣓࣮ࣛࢱ , n1 ࡣ 10㸪n2 ࡣ 2 ࡛࠶ࡾ㸪୍⯡ⓗ࡞࣮࢜ࢫࢸࢼࢺ⣔ (1)4~8 ࢫࢸࣥࣞࢫ㗰ࡢ n1 ್ 3㹼1011)ࡼࡾࡶࡁ࠸ࡓࡵ㸪࣮ࣜ ࣥ㗰ࡢ0.2%⪏ຊࡲ࡛ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࡢ㠀⥺ᙧᛶࡣ ྠ㗰ẚ࡚ᑠࡉ࠸⪃࠼ࡽࢀࡿ㸬 ࡇࡇ㸪ı㸸ᛂຊ㸪İ㸸ࡦࡎࡳ㸪ıp㸸ẚ㝈⏺㸦=0.01% 㸳㸬ᶵᲔⓗ≉ᛶ್ᵓᡂᘧࡢᮦᩱᐃᩘ㛫ࡢ㛵ಀ 㸪ı0.2 İ0.2㸸ࡑࢀࡒࢀ 0.2%⪏ຊ 0.2%⪏ຊ ⪏ຊ ı0.01㸧 MRO ᭤⥺ࡢᮦᩱᐃᩘࡣ㸪ᶵᲔⓗ≉ᛶ್ࡋ࡚ᙎᛶಀ ࡦࡎࡳ㸪E㸸ᙎᛶಀᩘ㸪E0.2㸸0.2%⪏ຊࡢ᥋⥺ᙎᛶ ᩘ E㸪0.01%⪏ຊ ı0.01㸪0.2%⪏ຊ ı0.2㸪1%⪏ຊ ı1 10% ಀᩘ㸪n1㸪n2㸸ࡑࢀࡒࢀ➨ 1 ➨ 2 ࡢ᭤⥺ࡢ◳ࣃࣛ ࡦࡎࡳࡢᛂຊ ı10 ࢆ⏝࠸࡚Ỵᐃࡉࢀࡿ㸬ࡋࡋ㸪୍⯡ ࣓࣮ࢱ㸪ı10㸸10%ࡦࡎࡳࡢᛂຊ㸪࠾ࡼࡧ İ10㸸10%ࡦ ᮦᩱつ᱁ࡸ࣑ࣝࢩ࣮ࢺࡣ ı0.2 ᘬᙇᙉᗘ ıu ࡢࡳࡀ ࡎࡳ㸦=0.1㸧࡛࠶ࡿ㸬 ࠼ࡽࢀ࡚࠸ࡿࡓࡵ㸪ࡑࢀࡽᇶ࡙࠸࡚ MRO ᭤⥺ࡣ ୍ࡋ࡚㸪ᅽᘏ᪉ྥ㸦L2㸧┤ゅ᪉ྥ㸦T1㸧ࡢᛂ ᐃࡵࡽࢀ࡞࠸㸬ࡑࡇ࡛㸪ᮦᩱヨ㦂ࡽᚓࡽࢀࡓ㝆అẚ ຊ㸫ࡦࡎࡳ᭤⥺ྛヨ㦂⤖ᯝᙜ࡚ࡣࡵࡓ MRO ᭤⥺ ı0.2/ıu 㸪ᶵᲔⓗ≉ᛶ್ E㸪ı0.01㸪ı1㸪ı10 ࢆ ı0.2 ࡸ ıu ࡛ ࢆẚ㍑ࡋ࡚ᅗ㸫10 ♧ࡍ㸬ྠᅗࡼࡾ㸪MRO ᭤⥺ࡣヨ ↓ḟඖࡋࡓࣃ࣓࣮ࣛࢱࢆ┦㛵ศᯒࡋ㸪ı0.2/ıu ࡽࡑࢀ 㦂⤖ᯝⰋዲ㐺ྜࡋ࡚࠾ࡾ㸪MRO ᭤⥺ࡣ࣮ࣜࣥ㗰 ࡽࡢᶵᲔⓗ≉ᛶ್ࢆ᥎ᐃࡍࡿࡇࡀ⪃࠼ࡽࢀࡿ ᑐࡋ࡚ࡶ㐺⏝࡛ࡁࡿ⪃࠼ࡽࢀࡿ㸬 㸫11㹼14 ࡣࡑࡢ⤖ᯝ ı0.2/ıu ᭱ࡶⰋዲ࡞┦㛵ࢆ♧ࡋࡓ ᮏ◊✲ࡢᮦᩱヨ㦂ࡽỴᐃࡉࢀࡓ MRO ᭤⥺ࡢᮦᩱ ↓ḟඖࣃ࣓࣮ࣛࢱࡢ㛵ಀ㸪ᅇᖐᘧ┦㛵ಀᩘࢆ♧ࡋ࡚ ᐃᩘࡢᅽᘏ᪉ྥࡈࡢᖹᆒ್㸪ᖹᆒ್ࢆ⾲㸫5 ♧ ࠸ࡿ㸬ࡇࢀࡼࡾ㸪ྛᅇᖐᘧᑐࡍࡿ┦㛵ಀᩘࡣ 0.84㹼 20 12) 㸬ᅗ Memoirs of National Institute of Technology, Akashi College, Japan No.57 (2015.2) 1 0.85 ヨ㦂⤖ᯝ ヨ㦂⤖ᯝ 0.8 ᅇᖐᘧ ı0.2/ı10 ı0.2/ı1 0.95 0.9 ᅇᖐᘧ 0.75 0.85 0.7 ┦㛵ಀᩘ 0.90 ┦㛵ಀᩘ 0.89 0.8 0.65 0.5 0.55 0.6 0.65 ı0.2/ıu 0.7 0.75 0.8 0.5 ᅗ㸫 ı0.2/ı1 ı0.2/ıu ࡢ㛵ಀ 0.65 ı0.2/ıu 0.7 0.75 0.8 0.6 +10% 2.6 +10% 0.55 2.4 -10% 2.2 0.5 -10% 0.45 2 0.4 2 2.2 2.4 2.6 (ı0.2/E)estimation (10-3) 2.8 0.4 0.45 0.5 (ı0.01/ıu)estimation 0.55 0.6 ᅗ㸫 ヨ㦂᥎ᐃᘧࡽᚓࡽࢀࡓ ı0.01/ıu ࡢẚ㍑ ᅗ㸫 ヨ㦂᥎ᐃᘧࡽᚓࡽࢀࡓ ı0.2/E ࡢẚ㍑ 1 0.85 +10% +5% 0.8 (ı0.2/ı10)test 0.95 (ı0.2/ı1)test 0.6 ᅗ㸫 ı0.2/ı10 ı0.2/ıu ࡢ㛵ಀ (ı0.01/ıu)test (ı0.2/E )test (10-3) 2.8 0.55 0.9 -5% 0.85 0.75 0.7 -10% 0.8 0.8 0.85 0.9 (ı0.2/ı1)estimation 0.95 0.65 0.65 1 ᅗ㸫 ヨ㦂᥎ᐃᘧࡽᚓࡽࢀࡓ ı0.2/ı1 ࡢẚ㍑ 0.7 0.75 (ı0.2/ı10)estimation 0.8 0.85 ᅗ㸫 ヨ㦂᥎ᐃᘧࡽᚓࡽࢀࡓ ı0.2/ı10 ࡢẚ㍑ 0.90 㸪୧ࣃ࣓࣮ࣛࢱ㛫ᙉ࠸┦㛵ࡀ࠶ࡿࡇࡀࢃ ࡽ࠼ࡽࢀࡓ↓ḟඖࣃ࣓࣮ࣛࢱࡢ㛵ಀࢆᅗ㸫15㹼18 ࡿ㸬ᙎᛶಀᩘࡸ 0.01%⪏ຊࡢ┦㛵ಀᩘࡀࡸࡸᑠࡉ࠸ࡢ ♧ࡍ㸬ࡇࢀࡼࡾ㸪ྠᘧࡼࡿヨ㦂⤖ᯝࡢ᥎ᐃㄗᕪࡣ↓ ࡣ㸪ᅽᘏ᪉ྥࡼࡿ␗᪉ᛶࡢᙳ㡪ࡼࡿࡶࡢ⪃࠼ࡽ ḟඖࣃ࣓࣮ࣛࢱ ı0.2/E ı0.2/ı10㸪ı0.01/ıu ࡣ±10%௨ෆ㸪 ࢀࡿ㸬௨ୖࡼࡾ㸪ᮏ◊✲࡛ࡣ㸪ྠᅗ୰♧ࡍ௨ୗࡢᅇ ı0.2/ı1 ࠶ࡗ࡚ࡣ±5%௨ෆ࡛࠶ࡿࡓࡵ㸪ᘧ(2)㹼(5)ࡣᐇ⏝ ᖐᘧࢆ E㸪ı0.01㸪ı1 ı10 ࡢ᥎ᐃᘧࡋ࡚ᥦ♧ࡍࡿ㸬 V V (2) 0.0033 0.0002 E V ⓗ࡞᥎ᐃᘧࡋ࡚㐺⏝࡛ࡁࡿ⪃࠼ࡽࢀࡿ㸬 0 .2 ᮏ◊✲ࡢᮦᩱヨ㦂ᇶ࡙ࡃᶵᲔⓗ≉ᛶ್ࡢᖹᆒ್ࢆ 0.2 ⏝࠸࡚Ỵᐃࡋࡓ MRO ᭤⥺㸦᭤⥺ a ⛠ࡍࡿ㸧 㸪0.2%⪏ u V V 0.01 V V u 0.2 V V 1 0.2 10 V 0.6939 0.0401 V (3) V 0.4674 V (4) V 0.8498 0.1646 V (5) 0.2 ຊᘬᙇᙉᗘࡢྠᖹᆒ್ࢆᘧ(2)㹼(5)௦ධࡋ࡚ᚓࡽ ࢀࡿᶵᲔⓗ≉ᛶ್ࡢ᥎ᐃ್ࢆ⏝࠸࡚Ỵᐃࡋࡓ MRO ᭤ u 0.6353 0.2 ⥺㸦᭤⥺ b㸧 㸪ࡑࢀࡽࡢ᥎ᐃ್㸩ഃ㸪㸫ഃࡢࡤࡽࡘࡁ ࢆ࠼࡚Ỵᐃࡋࡓ MRO ᭤⥺㸦ࡑࢀࡒࢀ᭤⥺ c㸪d㸧ࢆ u 0.2 ᅗ㸫19 ♧ࡍ㸬ࡓࡔࡋ㸪᭤⥺ c㸪d ࡢࡤࡽࡘࡁࡣ㸪ᅗ㸫 15㹼18 ࡢ᥎ᐃㄗᕪ㚷ࡳ࡚㸪 ᙎᛶಀᩘ㸪 ẚ㝈⏺ 10% u ᘧ(2)㹼(5)ࡢ⢭ᗘࢆ☜ㄆࡍࡿࡓࡵ㸪ᮦᩱヨ㦂ྠᘧ ࡦࡎࡳᛂຊࡘ࠸࡚ࡣs10%㸪1%⪏ຊࡘ࠸࡚ࡣs 21 明石工業高等専門学校研究紀要 第57号（平成27年2月） 5%ࡋࡓ㸬 ࡇࢀࡼࡾ㸪 ᭤⥺ a b ࡣ㔜࡞ࡗ࡚࠸ࡿࡇ㸪 800 ᛂຊı (N/mm2) ࡑࢀࡽࡣ᭤⥺ c d ࡢ㛫ᣳࡲࢀ࡚࠸ࡿࡇࡽ㸪ᘧ (2)㹼(5)ࡼࡗ࡚ᶵᲔⓗ≉ᛶ್ࢆ᥎ᐃࡋ㸪ࡑࢀࡽࢆ⏝࠸ ࡚ MRO ᭤⥺ࡀ☜❧࡛ࡁࡿࡇࡀࢃࡿ㸬 㸴㸬ࡲࡵ 600 ᭤⥺a 400 ᭤⥺b ᭤⥺c 200 ᭤⥺d ᮏ◊✲࡛ࡣ㸪࣮ࣜࣥ㗰 1.4162 ࡢᮦᩱヨ㦂ࢆᐇࡍࡿ 0 ࡇࡼࡗ࡚ࡑࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ᶵᲔⓗ≉ᛶ್ࢆ 0 ᢕᥱࡍࡿࡶ㸪᪤ ࡢྠ㗰㛵ࡍࡿヨ㦂⤖ᯝࡶ 㞟㸪ศᯒࡍࡿࡇࡼࡗ࡚ᶵᲔⓗ≉ᛶ್ࡢࡤࡽࡘࡁ㸪 2 4 6 䜂䛪䜏İ (%) 8 10 ᅗ㸫 ᥎ᐃᘧࡽᮦᩱᐃᩘࡢỴᐃࡉࢀࡓ 052 ᭤⥺ ᯈཌ౫Ꮡᛶࡘ࠸࡚ࡶㄪᰝࡋࡓ㸬ࡲࡓ㸪᪤Ꮡࡢᵓᡂᘧ 㸦MRO ᭤⥺㸧ࡢ࣮ࣜࣥ㗰ࡢ㐺⏝ᛶࢆ᳨ウࡋ㸪ࡉࡽ Res.㸪Vol.80㸪pp.1-14㸪2013. ྠ᭤⥺ࡢᮦᩱᐃᩘࡢỴᐃᚲせ࡞ᶵᲔⓗ≉ᛶ್ࢆ0.2% 4) N. Saliba and L. Gardner㸸Experimental study of the ⪏ຊᘬᙇᙉᗘࡢࡳࡽỴᐃ࡛ࡁࡿ᥎ᐃᘧࢆᥦ♧ࡋࡓ㸬 ௨ୗᮏ◊✲࡛ᚓࡽࢀࡓᡂᯝࢆࡲࡵࡿ㸬 shear response of lean duplex stainless steel plate girders㸪 Eng. Struct.㸪Vol.64㸪pp.375-391㸪2013. (1) ࣮ࣜࣥ㗰ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࡣ᫂☜࡞㝆అⅬࢆᣢ 5) ዉⰋ ᩗ㸪୰ᮧ⪷୕㸪ᏳἼ༤㐨㸪ᕝ➃ᩥ㸪ሷ㣬㇏ ࡓ࡞࠸ࣛ࢘ࣥࢻࣁ࢘ࢫᆺࡢ᭤⥺ࢆ♧ࡋ㸪ᅽᘏ᪉ྥ ᫂㸸ᶫᱱྥࡅᵓ㐀⏝㗰ᯈࡢᯈཌ࠾ࡼࡧᙉᗘ㛵ࡍࡿ ࡼࡿ␗᪉ᛶࡀㄆࡵࡽࢀࡿ㸬 ⤫ィㄪᰝ㸪 ᅵᮌᏛㄽᩥ㞟㸪 No.752㸭I-66㸪 pp.299-310㸪 (2) ࣮ࣜࣥ㗰ࡢ 0.2%⪏ຊ㸪ᘬᙇᙉᗘࡣ SUS329J3L 2004. ྠ➼࡛࠶ࡾ㸪ࡑࡢ 0.2%⪏ຊࡣ SM570 ࡢ㝆అᛂຊ┦ 6) European Committee for Standardization, CEN㸸EN ᙜ࡛࠶ࡿ㸬 10088–4. Stainless steels—Part 4: Technical delivery (3) ࣮ࣜࣥ㗰ࡣᯈཌቑຍࡘࢀ࡚ 0.2%⪏ຊ㸪ᘬᙇᙉᗘ conditions for sheet/plate and strip of corrosion resisting ࡶపୗࡍࡿഴྥ࠶ࡿࡶࡢࡢ㸪ᘬᙇᙉᗘࡢపୗࡣ steels for general purposes㸪2009. 7) ᳃ ┬࿃㸪୕ዲᓫኵ㸪㉺ᬛෆኈ㸪ᐑᔘ㟹㸪ዉⰋ 0.2%⪏ຊࡢపୗẚ࡚ᑠࡉ࠸㸬 (4) ࣮ࣜࣥ㗰ࡢᶵᲔⓗ≉ᛶ್ࡢࡤࡽࡘࡁࡣᅽᘏ᪉ྥ ᩗ㸸ࢫࢸࣥࣞࢫ㗰ࡢᛂຊࡦࡎࡳࣔࢹࣝࡀ⤊ᒁᙉᗘ ࡼࡿ␗᪉ᛶࡢᙳ㡪ᑐᛂࡋ࡚㸪ᛂຊࣞ࣋ࣝࡢୖ᪼ ཬࡰࡍᙳ㡪ࡘ࠸࡚㸪㗰ᵓ㐀ᖺḟㄽᩥሗ࿌㞟㸪᪥ᮏ ࡘࢀ࡚ᑠࡉࡃ࡞ࡿ㸬 㗰ᵓ㐀༠㸪➨ 15 ᕳ㸪645-652 㡫㸪2007. (5) ࣮ࣜࣥ㗰ࡢ 0.2%⪏ຊࡸᘬᙇᙉᗘࡢࡤࡽࡘࡁࡣ 8) ୍⯡㈈ᅋἲே ᪥ᮏつ᱁༠㸸JIS G 4304 ⇕㛫ᅽ SUS304㸪SUS316 ẚ࡚ᑠࡉ࠸ഴྥ࠶ࡿ㸬 ᘏࢫࢸࣥࣞࢫ㗰ᯈཬࡧ㗰ᖏ㸪2012. (6) MRO ᭤⥺ࢆ⏝࠸࡚࣮ࣜࣥ㗰ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ 9) ᘓタ┬㸸ᘓタᴗࡢ᪂⣲ᮦ࣭᪂ᮦᩱ⏝ᢏ⾡ࡢ㛤 ࢆ⢭ᗘࡼࡃ⾲⌧࡛ࡁࡿ㸬 Ⓨሗ࿌᭩ 㸸 ᘓタ┬⥲ྜᢏ⾡㛤Ⓨࣉࣟࢪ࢙ࢡࢺ㸪 (7) ᥦ♧ࡋࡓ᥎ᐃᘧࢆ⏝࠸࡚ MRO ᭤⥺ࡢᮦᩱᐃᩘࡢ 1994. ィ⟬ᚲせ࡞ᶵᲔⓗ≉ᛶ್ࢆᐇ⏝ⓗ࡞⢭ᗘ࡛᥎ᐃ 10) E. Real, I. Arrayago and R. Westeel㸸Comparative study ࡛ࡁࡿ㸬 in analytical expressions for the modelling of stainless steel behaviour㸪Stainless Steel in Structures㸪4th Int. ཧ⪃ᩥ⊩ Experts Seminar㸪Ascot, UK.㸪pp.1-17㸪2012. 1) Graham Gedge㸸Structural uses of stainless steel — 11) K. J. R. Rasmussen, and J. Rondal㸸Explicit Approach to buildings and civil engineering, J. of Const. Steel Res., Design of Stainless Steel Columns㸪J. of Struct. Eng.㸪 Vol.64, pp.1194-1198, 2008. Proc. of ASCE㸪Vol.123㸪No.7㸪pp. 857-863㸪1997. 2) European Committee for Standardization㸸Eurocode 3: - 12) K. J.R. Rasmussen㸸Full-range stress-strain curves for Design of steel structures - Part 1-4: General rules - stainless steel alloys㸪J. of Const. Steel Res.㸪Vol.59㸪 Supplementary rules for stainless steels, CEN, European pp.47-61㸪2003. Standard, EN 1993-1-4, 2006. 3) N. Saliba and L. Gardner㸸Cross-section stability of lean duplex stainless steel welded I-section㸪J. of Const. Steel 22
© Copyright 2024 ExpyDoc
