リーン二相系ステンレス鋼板の機械的特性値と構成式［PDF：0.7MB］

Memoirs of National Institute of Technology, Akashi College, Japan No.57 (2015.2)
࣮ࣜࣥ஧┦⣔ࢫࢸࣥࣞࢫ㗰ᯈࡢᶵᲔⓗ≉ᛶ್࡜ᵓᡂᘧ
⣽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ᑑ࿨໬ࡢಁ㐍ࡸLCC⦰ῶࡢほⅬ࠿ࡽࡑࡢᅵᮌᵓ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 ➼ࡢ࣮࢜ࢫࢸࢼ࢖ࢺ⣔ࢫࢸࣥࣞࢫ㗰࡛ࡣ 8㹼
୍⯡ⓗ࡟㸪㗰ᮦࡢᶵᲔⓗ≉ᛶ್ࡣࡤࡽࡘࡁࢆ᭷ࡋ㸪ᯈ
10%ࡢࢽࢵࢣࣝࢆྵࡴ㸬ࡑࢀ࡟ᑐࡋ࡚㸪㏆ᖺ㛤Ⓨࡉࢀ
ཌ౫Ꮡᛶࢆ♧ࡍሙྜࡶ࠶ࡿ 5)㸬ࡑࢀࡽࡣ㗰ᵓ㐀≀ࡢ⤊
ࡓ࣮ࣜࣥ஧┦⣔ࢫࢸࣥࣞࢫ㗰㸦௨ୗ㸪࣮ࣜࣥ㗰࡜␎⛠
ᒁᙉᗘ࡟ᙳ㡪ࢆཬࡰࡍせᅉ࡛࠶ࡿ࡟ࡶ㛵ࢃࡽࡎ㸪࣮ࣜ
ࡍࡿ㸧ࡣ㸪᭱ᑡ 1.5%ࡲ࡛ࢽࢵࢣࣝྵ᭷㔞ࢆ๐ῶࡍࡿࡇ
ࣥ㗰ࡢᶵᲔⓗ≉ᛶ್ࡢࡤࡽࡘࡁࡸᯈཌ౫Ꮡᛶ࡟ࡘ࠸࡚
࡜࡟ࡼࡗ࡚ᮦᩱࢥࢫࢺࡀపῶࡉࢀ࡚࠸ࡿ㸬ࢽࢵࢣࣝྵ
ࡣ᫂☜࡟ࡉࢀ࡚࠸࡞࠸㸬ᮏ◊✲࡛ࡣ㸪࣮ࣜࣥ㗰࡜ࡋ࡚
᭷㔞ࡢ๐ῶ࡟ࡶ㛵ࢃࡽࡎ࣮ࣜࣥ㗰ࡢ⪏㣗ᛶࡣ SUS304
EN 10088-46)ࡢ 1.4162 ࢆᑐ㇟࡟㸪ࡑࡢᶵᲔⓗ≉ᛶ್ࡢࡤ
࡜ྠ➼࡛࠶ࡾ㸪ᵓ㐀≀ࡢ࣑ࢽ࣐࣒࣓ࣥࢸࢼࣥࢫ໬㸪㉸
ࡽࡘࡁࡸᯈཌ౫Ꮡᛶ࡟ࡘ࠸࡚᫂☜࡟ࡍࡿࡇ࡜ࢆ┠ⓗ࡜
*
ࡋ࡚㸪ᮦᩱヨ㦂࡟ࡼࡗ࡚ᛂຊ㸫ࡦࡎࡳ㛵ಀࢆᢕᥱࡍࡿ
࡟⥙⨶ࡉࢀ࡚࠸࡞࠸ࡓࡵ㸪࣮ࣜࣥ㗰ᵓ㐀≀ࡢ⤊ᒁᙉᗘ
ᚨᓥ኱ᏛᕤᏛ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ᯒ࡟ྥࡅ࡚㸪᪤Ꮡ
௨㝆࡛ࡣࡑࢀࡒࢀᅽᘏ᪉ྥ㸪ྠ┤ゅ᪉ྥヨ㦂∦ࡢ㢌ᩥ
7)
ࡢᵓᡂᘧ ࡢྠ㗰࡬ࡢ㐺⏝ᛶ࡟ࡘ࠸࡚ࡶ᳨ドࡍࡿ㸬୍
Ꮠ࡟ L㸪T㸪ࡑࡢᚋ࡟␒ྕࢆ௜ࡋ࡚ 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Ⲵ࡜ࡋࡓ㸬࡞࠾㸪L1 ヨ㦂∦࡟ࡘ࠸࡚ࡣ㍕Ⲵ᪉
࡚࠸ࡿ࡟㐣ࡂ࡞࠸ࡓࡵ㸪ࡑࢀࡽ࡟ᇶ࡙࠸࡚ᵓᡂᘧࢆ☜
ἲ࡟୙ഛࡀ࠶ࡗࡓࡓࡵ㝖እࡋ࡚⤖ᯝࢆᩚ⌮ࡋࡓ㸬
❧ࡍࡿࡇ࡜ࡣᅔ㞴࡛࠶ࡿ㸬ᮏ◊✲࡛ࡣᮦᩱヨ㦂⤖ᯝࢆ
ᩚ⌮ࡋ㸪ᵓᡂᘧࡢᮦᩱᐃᩘࡢỴᐃ࡟ᚲ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ࢆㄪ࡭ࡿ㸬ࡑࢀ࡟ࡼࡗ࡚㸪0.2%
඲ヨ㦂∦ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࢆᅗ㸫2 ࡟♧ࡍ㸬ࡇࢀ
⪏ຊࡸᘬᙇᙉᗘ࠿ࡽࡑࢀࡽࡢᶵᲔⓗ≉ᛶ್ࢆᐇ⏝ⓗ࡞
ࡼࡾ㸪࣮ࣜࣥ㗰ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࡣᅽᘏ᪉ྥ࡟ࡼࡿ
⢭ᗘ࡛᥎ᐃ࡛ࡁࡿᘧࡢᥦ♧ࡶ┠ⓗ࡜ࡍࡿ㸬
␗᪉ᛶࢆ♧ࡍࡇ࡜ࡀࢃ࠿ࡿ㸬ᅗ㸫3 ࡟ࡣ࣮ࣜࣥ㗰 L2㸪
T1 ࡜ᵓ㐀⏝Ⅳ⣲㗰 SS400㸪SM490Y㸪SM570㸪࣮࢜ࢫ
㸰㸬ᮦᩱヨ㦂
ࢸࢼ࢖ࢺ⣔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ࢆ຺᱌ࡋ࡚බ⛠ᯈཌ 6mm
࣮ࣜࣥ㗰ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࡣ㸪
SUS304 ࡸ SUS329J3L
ࡢ EN 1.4162 ⇕㛫ᅽᘏ㗰ᯈࢆ 3mm ࡟ษ๐ࡋࡓᅗ㸫1 ࡟
࡜ྠᵝ࡟᫂☜࡞㝆అⅬࡸ㝆అᲴࢆᣢࡓ࡞࠸ࣛ࢘ࣥࢻࣁ
♧ࡍヨ㦂∦ࢆ⏝࠸ࡓ㸬ྠᅗ୰ࡢ A 㒊ࡣఙࡧィࢆタ⨨ࡍ
࢘ࢫᆺࡢ᭤⥺ࢆ♧ࡍࡇ࡜ࡀࢃ࠿ࡿ㸬
ࡿࡓࡵࡢ✺㉳࡛࠶ࡾ㸪ྠᵝࡢヨ㦂∦ࢆ⏝࠸ࡓࡇࢀࡲ࡛
㸰㺃㸰㺃㸰 ᶵᲔⓗ≉ᛶ್
ࡢᮦᩱヨ㦂࡟ࡼࡗ࡚㸪ࡑࢀࡀヨ㦂⤖ᯝ࡟ཬࡰࡍᙳ㡪ࡢ
ᮏ◊✲࡛ࡣ㸪ᶵᲔⓗ≉ᛶ್࡜ࡋ࡚ᙎᛶಀᩘ㸪0.2%⪏
࡞࠸ࡇ࡜ࡀ☜ㄆࡉࢀ࡚࠸ࡿ㸬ࡲࡓ㸪ྠ㗰ᯈࡢᅽᘏ᪉ྥ
ຊ㸪ᘬᙇᙉᗘ࡟ຍ࠼࡚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
ᩱᐃᩘࡢỴᐃ࡟ᚲせ࡛࠶ࡿ 1%⪏ຊ㸪10%ࡦࡎࡳ᫬ᛂຊ
ࢆྲྀࡾୖࡆࡿ㸬
඲ヨ㦂∦ࡢᶵᲔⓗ≉ᛶ್㸪ࡑࢀࡽࡢᖹᆒ್㸪࣑ࣝࢩ
㗰✀
࣮ࢺ್㸦ᅽᘏ┤ゅ᪉ྥ࡟ᑐࡍࡿࡶࡢ㸧ࢆつ᱁್ 6)࡜࡜
ࡶ࡟⾲㸫1 ࡟♧ࡍ㸬ࡇࢀࡼࡾ㸪0.2%⪏ຊ㸪ᘬᙇᙉᗘ㸪
◚᩿ఙࡧࡣ࠸ࡎࢀࡶつ᱁್ࢆ‶ࡓࡋ࡚࠸ࡿࡇ࡜ࡀࢃ࠿
ࡿ㸬ヨ㦂⤖ᯝ࡜࣑ࣝࢩ࣮ࢺ್࡜ࡢᕪ␗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అẚ࡟ࡘ࠸࡚㸪࣮ࣜࣥ㗰㸦ᅽᘏ᪉ྥࡈ࡜ࡢ
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
࣮࢜ࢫࢸࢼ࢖ࢺ⣔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࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ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
SUS304࡟ࡣཬࡤ࡞࠸ࡶࡢࡢSM570ࡼࡾᑠࡉࡃ㸪
SM570
࡟ẚ࡭࡚ࡦࡎࡳ◳໬≉ᛶ࡟ඃࢀ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬
ྥ࡜ྠ┤ゅ᪉ྥ࡟ヨ㦂∦ࢆษࡾฟࡋ࡚㸪ᘬᙇヨ㦂࡜ᅽ
ྠ⾲࡟ࡣ㸪ᶵᲔⓗ≉ᛶ್ࡢᅽᘏ᪉ྥ࡜ྠ┤ゅ᪉ྥࡢẚ
⦰ヨ㦂ࡀᐇ᪋ࡉࢀ࡚࠸ࡿ㸬
ࡶ♧ࡋࡓࡀ㸪࣮ࣜࣥ㗰ࡣ SUS304 ࡟ẚ࡭࡚ࡸࡸᅽᘏ᪉
ྥ࡟ࡼࡿ␗᪉ᛶࡢ኱ࡁ࠸ࡇ࡜ࡀࢃ࠿ࡿ㸬
㸱㺃㸯 ᯈཌ౫Ꮡᛶ
0.2%⪏ຊ ı0.2㸪ᘬᙇᙉᗘ ıu ࡜ᯈཌࡢ㛵ಀࢆࡑࢀࡒࢀ
㸱㸬ᶵᲔⓗ≉ᛶ್ࡢᯈཌ౫Ꮡᛶ࡜ࡤࡽࡘࡁ
ᅗ㸫4㸪5 ࡟♧ࡍ㸬ࡓࡔࡋ㸪ᅗ㸫4㸪5 ࡢ⦪㍈ࡣࡑࢀࡒࢀ
㝈ࡽࢀࡓࢹ࣮ࢱ࡛ࡣ࠶ࡿࡶࡢࡢ㸪ᮏ◊✲࡛ᐇ᪋ࡋࡓ
⾲㸫1 ࡟♧ࡍ 0.2%⪏ຊ㸪ᘬᙇᙉᗘࡢつ᱁್ ı0.2EN㸪ıuEN
3),4)
ࢆ཰㞟㸪ศᯒ
࡛↓ḟඖ໬ࡋ࡚࠸ࡿ㸬ࡲࡓ㸪ྠᅗ୰ࡢ 0.2%⪏ຊ㸪ᘬᙇ
ࡍࡿࡇ࡜࡟ࡼࡗ࡚㸪ᶵᲔⓗ≉ᛶ್࡟ཬࡰࡍᯈཌࡢᙳ㡪
ᙉᗘࡣヨ㦂⤖ᯝࡈ࡜࡟ࢩࣥ࣎ࣝࢆኚ࠼࡚ࣉࣟࢵࢺࡋ㸪
࡜ᶵᲔⓗ≉ᛶ್ࡢࡤࡽࡘࡁ࡟ࡘ࠸࡚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ᯈ࠿ࡽ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 ᘬᙇᙉᗘ࡜ᯈཌࡢ㛵ಀ
ᅗ㸫 ⪏ຊ࡜ᯈཌࡢ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%ࡦࡎࡳ᫬ᛂຊ 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 ࣃ࣮ࢭࣥࢱ࢖ࣝ (N/mm 2 )
191000
254
431
506
636
704
217794
440
565
614
719
766
5 ࣃ࣮ࢭࣥࢱ࢖ࣝ (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♧ࡍࡢ࡟ᑐࡋ࡚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♧ࡍࡇ࡜࠿ࡽ㸪␗᪉ᛶࡢ
ᅗ㸫4 ࡼࡾ㸪ᅇᖐᘧࡣ࠸ࡎࢀࡶྑୗࡀࡾ࡛࠶ࡿࡇ࡜
ᙳ㡪ࡣᅽ⦰ࡼࡾࡶᘬᙇ࡛ᙉࡃ⌧ࢀࡿࡇ࡜ࡀࢃ࠿ࡿ㸬୍
ࡀࢃ࠿ࡿ㸬඲⤖ᯝ࡟ᑐࡍࡿᅇᖐᘧࡢ┦㛵ಀᩘࡣ-0.43 ࡜
᪉㸪ᅗ㸫7 ࡼࡾᘬᙇᙉᗘ࡟ࡘ࠸࡚ࡣ㸪ᅽᘏ᪉ྥ࡟ẚ࡭
┦㛵ࡣ࠶ࡲࡾᙉࡃ࡞࠸ࡶࡢࡢ㸪࣮࢜ࢫࢸࢼ࢖ࢺ⣔ࢫࢸ
࡚┤ゅ᪉ྥࡢ᪉ࡀ኱ࡁ࠸ഴྥ࡟࠶ࡾ㸪␗᪉ᛶࡀぢཷࡅ
ࣥࣞࢫ㗰 SUS304 ࡀ 0.2%⪏ຊ࡟ᯈཌ౫Ꮡᛶࡀ࡞࠸࡜ࡉ
ࡽࢀࡿ㸬ࡋ࠿ࡋ㸪ࡑࡢศᕸᖜࡣᅗ㸫6 ࡢ 0.2%⪏ຊ࡟ẚ
9)
ࢀ࡚࠸ࡿ ࡢ࡜ࡣᑐ↷ⓗ࡟㸪࣮ࣜࣥ㗰ࡣᯈཌࡢቑຍ࡟
࡭࡚ᑠࡉࡃ㸪ᘬᙇᙉᗘ࡟ᑐࡍࡿ␗᪉ᛶࡢᙳ㡪ࡣ 0.2%⪏
ࡘࢀ࡚ 0.2%⪏ຊࡀపୗഴྥ࡟࠶ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬
ຊ࡟ẚ࡭࡚ᑠࡉ࠸ࡇ࡜ࡀࢃ࠿ࡿ㸬
ᅗ㸫5 ࡼࡾ㸪඲࡚ࡢᅇᖐᘧࡀഹ࠿࡟ྑୗࡀࡾ࡛࠶ࡿ
⾲㸫3 ࡟ࡣ඲ヨ㦂⤖ᯝ࡟ᑐࡍࡿᙎᛶಀᩘ㸪
ẚ౛㝈⏺㸪
ࡶࡢࡢ㸪඲⤖ᯝ࡟ᑐࡍࡿᅇᖐᘧࡢ┦㛵ಀᩘࡣ-0.33 ࡜┦
0.2%⪏ຊ࡜ 1%⪏ຊ㸪10%ࡦࡎࡳ᫬ᛂຊ࡜ᘬᙇᙉᗘ࡟ࡘ
㛵ࡣᙅ࠸㸬ࡼࡗ࡚㸪ᘬᙇᙉᗘࡢᯈཌ౫Ꮡᛶࡣ 0.2%⪏ຊ
࠸࡚㸪ྛࢧࣥࣉࣝᩘ㸪ᖹᆒ್㸪ᶆ‽೫ᕪ㸪ኚືಀᩘ㸪
ࡢࡑࢀ࡟ẚ࡭࡚ᑠࡉ࠸ഴྥ࡟࠶ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬
᭱኱್࡜᭱ᑠ್㸪95㸪5 ࣃ࣮ࢭࣥࢱ࢖ࣝࢆ♧ࡋࡓ㸬࡞
࠾㸪95㸪5 ࣃ࣮ࢭࣥࢱ࢖ࣝࡣṇつศᕸࢆᙜ࡚ࡣࡵ࡚ồ
㸱㺃㸰 ࡤࡽࡘࡁ
ࡵ࡚࠸ࡿ㸬⾲㸫3 ࡼࡾ㸪ᙎᛶಀᩘࡣᅽᘏ᪉ྥ࡟ࡼࡿ␗
ࡑࢀࡒࢀ LT㸪LC㸪TT㸪TC ࡟ᑐࡍࡿ 0.2%⪏ຊ࡜ᘬ
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%ࡦࡎࡳ᫬ᛂຊSD
20
0.2%⪏ຊ
10%ࡦࡎࡳ᫬ᛂຊ
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ࡋ࠿ࡋ㸪タィᇶ‽ 2)࡛ࡣྠ㗰ࡢ
2
ᙎᛶಀᩘࢆ 200 kN/mm ࡜つᐃࡋ࡚࠸ࡿࡇ࡜࠿ࡽ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ኚືಀᩘ࡟ࡘ࠸࡚ࡣ㸪0.01%⪏ຊ㸪0.2%⪏ຊ㸪1%
⪏ຊ㸪10%ࡦࡎࡳ᫬ᛂຊ㸪ᘬᙇᙉᗘࡢ㡰࡟ᑠࡉࡃ࡞ࡗ
࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬ࡇࢀࡣ㸪ᛂຊࡢୖ᪼࡟ࡘࢀ࡚ᅽ
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
䝃䞁䝥䝹ᩘ
ᘏ᪉ྥ࡟ࡼࡿ␗᪉ᛶࡢᙳ㡪ࡀᑠࡉࡃ࡞ࡿࡇ࡜࡟ࡼࡿࡶ
ᘬᙇᙉᗘ ı u
(N/mm 2 )
ࡢ࡜⪃࠼ࡽࢀࡿ㸬
ᅗ㸫8 ࡟ࡣ඲ヨ㦂⤖ᯝ࠿ࡽᚓࡽࢀࡓ 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%ࡦࡎࡳ᫬ᛂຊ㸪ᘬᙇᙉᗘࡢ㢖ᗘศ
ᕸ࡞ࡽࡧ࡟ྛࠎ࡟ᑐࡍࡿṇ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᫬
࡟ẚ࡭࡚࣮ࣜࣥ㗰ࡢኚືಀᩘࡀ᭱ࡶᑠࡉ࠸ࡇ࡜ࡀࢃ࠿
ᛂຊ㸪ᘬᙇᙉᗘ࡜ᛂຊࡢୖ᪼࡟ࡘࢀ࡚㸪ྛṇつศᕸᙧ
ࡿ㸬ࡇࡢཎᅉ࡜ࡋ࡚㸪࣮ࣜࣥ㗰࡟㛵ࡋ࡚ࡣᮏ◊✲㸪᪤
≧ࡢศᕸ⠊ᅖࡀ⊃ࡲࡾ㸪ᑤࡗࡓᙧ≧ࡀ⌧ࢀ࡚࠸ࡿࡇ࡜
ࡢ◊✲
ࡀࢃ࠿ࡿ㸬
㦂⤖ᯝ࡟ᇶ࡙࠸࡚࠸ࡿࡢ࡟ᑐࡋ࡚㸪SUS304㸪SUS316
⾲㸫4 ࡣ࣮ࣜࣥ㗰㸪࣮࢜ࢫࢸࢼ࢖ࢺ⣔ࢫࢸࣥࣞࢫ㗰
9)
9)
3),4)
࡜ࡶྠ୍࣓࣮࣮࢝ࡢ㗰ᯈࢆ⏝࠸ࡓᮦᩱヨ
ࡸ SM570 ࡟ࡘ࠸࡚ࡣ㸪」ᩘ࣓࣮࣮࢝ࡢ࣑ࣝࢩ࣮ࢺ࡟ᇶ
5)
SUS304 㸪SUS316 㸪ᵓ㐀⏝Ⅳ⣲㗰 SM570 ࡢ 0.2%⪏
࡙࠸࡚࠸ࡿࡇ࡜ࡀ⪃࠼ࡽࢀࡿࡀ㸪ヲ⣽ࡣ୙࡛᫂࠶ࡿ㸬
ຊ㸦㝆అᛂຊ㸧࡜ᘬᙇᙉᗘࡢᖹᆒ್㸪ᶆ‽೫ᕪ࡜ኚື
ಀᩘ࡟ࡘ࠸࡚ࢧࣥࣉࣝᩘ࡜࡜ࡶ࡟ẚ㍑ࡋࡓࡶࡢ࡛࠶ࡿ㸬
㸲㸬ᵓᡂᘧࡢ㐺⏝ᛶ
ࡇࢀࡼࡾ㸪ྛ㗰ࡢࢧࣥࣉࣝᩘࡀ␗࡞ࡿࡓࡵ┦ᑐⓗ࡞ẚ
ᮏ◊✲࡛ࡣ㸪࣮ࣜࣥ㗰ࡢᵓᡂᘧ࡜ࡋ࡚ SUS304 ➼ࡢ
㍑ࡣᚲࡎࡋࡶ㐺ษ࡛ࡣ࡞࠸ࡀ㸪࣮ࣜࣥ㗰ࡢ 0.2%⪏ຊࡣ
ࢫࢸࣥࣞࢫ㗰ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࢆ⢭ᗘࡼࡃ⾲⌧࡛ࡁ
ᅽᘏ᪉ྥ࡟ࡼࡿ␗᪉ᛶࡢᙳ㡪ࡀ࠶ࡿ࡟ࡶ㛵ࢃࡽࡎ㸪ࡑ
ࡿࡇ࡜ࡀ☜ㄆࡉࢀ࡚࠸ࡿ௨ୗࡢ MRO ᭤⥺ 7)ࢆ⏝࠸ࡓ㸬
ࡢኚືಀᩘࡣ SUS304㸪
SUS316 ࡟ẚ࡭࡚ᑠࡉࡃ㸪
SM570
ྠ᭤⥺ࡣ㸪ᅗ㸫9 ࡟♧ࡍࡼ࠺࡟㸪ẚ౛㝈⏺ࡲ࡛ࡣ⥺ᙧ
ࡢ㝆అᛂຊࡢኚືಀᩘࡼࡾⱝᖸ኱ࡁ࠸ࡇ࡜ࡀࢃ࠿ࡿ㸬
ᙎᛶᇦ㸪
ࡑࢀ௨㝆ࡣ 2 ࡘࡢ Ramberg-Osgood ᭤⥺ࢆ 0.2%
ࡇࢀࡣ㸪0.2%⪏ຊࡢỴᐃ࡟ᚲせ࡞ᙎᛶಀᩘࡢࡤࡽࡘࡁ
⪏ຊⅬ࡛⁥ࡽ࠿࡟⧅࠸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࡟ẚ࡭࡚ SUS304㸪SUS316 ࡢ᪉ࡀ኱ࡁ࠸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%ࡦࡎࡳ᫬ᛂຊ 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ᅽᘏ᪉ྥ࡟ࡼࡽࡎᴫࡡ◳໬ࣃ࣓࣮ࣛࢱ
,
n1 ࡣ 10㸪n2 ࡣ 2 ࡛࠶ࡾ㸪୍⯡ⓗ࡞࣮࢜ࢫࢸࢼ࢖ࢺ⣔
(1)4~8
ࢫࢸࣥࣞࢫ㗰ࡢ n1 ್ 3㹼1011)ࡼࡾࡶ኱ࡁ࠸ࡓࡵ㸪࣮ࣜ
ࣥ㗰ࡢ0.2%⪏ຊࡲ࡛ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺ࡢ㠀⥺ᙧᛶࡣ
ྠ㗰࡟ẚ࡭࡚ᑠࡉ࠸࡜⪃࠼ࡽࢀࡿ㸬
ࡇࡇ࡟㸪ı㸸ᛂຊ㸪İ㸸ࡦࡎࡳ㸪ıp㸸ẚ౛㝈⏺㸦=0.01%
㸳㸬ᶵᲔⓗ≉ᛶ್࡜ᵓᡂᘧࡢᮦᩱᐃᩘ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ⓗ≉ᛶ್࡜ࡋ࡚ᙎᛶಀ
᫬ࡦࡎࡳ㸪E㸸ᙎᛶಀᩘ㸪E0.2㸸0.2%⪏ຊ᫬ࡢ᥋⥺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
ࡦࡎࡳ᫬ࡢᛂຊ ı10 ࢆ⏝࠸࡚Ỵᐃࡉࢀࡿ㸬ࡋ࠿ࡋ㸪୍⯡
࣓࣮ࢱ㸪ı10㸸10%ࡦࡎࡳ᫬ࡢᛂຊ㸪࠾ࡼࡧ İ10㸸10%ࡦ
࡟ᮦᩱつ᱁ࡸ࣑ࣝࢩ࣮ࢺ࡟ࡣ ı0.2 ࡜ᘬᙇᙉᗘ ıu ࡢࡳࡀ
ࡎࡳ㸦=0.1㸧࡛࠶ࡿ㸬
୚࠼ࡽࢀ࡚࠸ࡿࡓࡵ㸪ࡑࢀࡽ࡟ᇶ࡙࠸࡚ 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⤖ᯝ࡟ᙜ࡚ࡣࡵࡓ 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
↓ḟඖ໬ࡋࡓࣃ࣓࣮ࣛࢱࢆ┦㛵ศᯒࡋ㸪ı0.2/ıu ࠿ࡽࡑࢀ
㦂⤖ᯝ࡜Ⰻዲ࡟㐺ྜࡋ࡚࠾ࡾ㸪MRO ᭤⥺ࡣ࣮ࣜࣥ㗰࡟
ࡽࡢᶵᲔⓗ≉ᛶ್ࢆ᥎ᐃࡍࡿࡇ࡜ࡀ⪃࠼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
ᐃᩘࡢᅽᘏ᪉ྥࡈ࡜ࡢᖹᆒ್㸪඲ᖹᆒ್ࢆ⾲㸫5 ࡟♧
࠸ࡿ㸬ࡇࢀࡼࡾ㸪ྛᅇᖐᘧ࡟ᑐࡍࡿ┦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࡜᥎ᐃᘧ࠿ࡽᚓࡽࢀࡓ ı0.01/ıu ࡢẚ㍑
ᅗ㸫 ヨ㦂࡜᥎ᐃᘧ࠿ࡽᚓࡽࢀࡓ 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࡜᥎ᐃᘧ࠿ࡽᚓࡽࢀࡓ ı0.2/ı1 ࡢẚ㍑
0.7
0.75
(ı0.2/ı10)estimation
0.8
0.85
ᅗ㸫 ヨ㦂࡜᥎ᐃᘧ࠿ࡽᚓࡽࢀࡓ ı0.2/ı10 ࡢẚ㍑
0.90 ࡜㸪୧ࣃ࣓࣮ࣛࢱ㛫࡟ᙉ࠸┦㛵ࡀ࠶ࡿࡇ࡜ࡀࢃ࠿
ࡽ୚࠼ࡽࢀࡓ↓ḟඖࣃ࣓࣮ࣛࢱࡢ㛵ಀࢆᅗ㸫15㹼18 ࡟
ࡿ㸬ᙎᛶಀᩘࡸ 0.01%⪏ຊࡢ┦㛵ಀᩘࡀࡸࡸᑠࡉ࠸ࡢ
♧ࡍ㸬ࡇࢀࡼࡾ㸪ྠᘧ࡟ࡼࡿヨ㦂⤖ᯝࡢ᥎ᐃㄗᕪࡣ↓
ࡣ㸪ᅽᘏ᪉ྥ࡟ࡼࡿ␗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 ࡢ᥎ᐃᘧ࡜ࡋ࡚ᥦ♧ࡍࡿ㸬
V
V
(2)
0.0033
0.0002
E
V
ⓗ࡞᥎ᐃᘧ࡜ࡋ࡚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
ຊ࡜ᘬᙇᙉᗘࡢྠᖹᆒ್ࢆᘧ(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࠿
ࡦࡎࡳ᫬ᛂຊ࡟ࡘ࠸࡚ࡣs10%㸪1%⪏ຊ࡟ࡘ࠸࡚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࠸ࡿࡇ࡜࠿ࡽ㸪ᘧ
(2)㹼(5)࡟ࡼࡗ࡚ᶵᲔⓗ≉ᛶ್ࢆ᥎ᐃࡋ㸪ࡑࢀࡽࢆ⏝࠸
࡚ MRO ᭤⥺ࡀ☜❧࡛ࡁࡿࡇ࡜ࡀࢃ࠿ࡿ㸬
㸴㸬ࡲ࡜ࡵ
600
᭤⥺a
400
᭤⥺b
᭤⥺c
200
᭤⥺d
ᮏ◊✲࡛ࡣ㸪࣮ࣜࣥ㗰 1.4162 ࡢᮦᩱヨ㦂ࢆᐇ᪋ࡍࡿ
0
ࡇ࡜࡟ࡼࡗ࡚ࡑࡢᛂຊ㸫ࡦࡎࡳ᭤⥺࡜ᶵᲔⓗ≉ᛶ್ࢆ
0
ᢕᥱࡍࡿ࡜࡜ࡶ࡟㸪᪤ ࡢྠ㗰࡟㛵ࡍࡿヨ㦂⤖ᯝࡶ཰
㞟㸪ศᯒࡍࡿࡇ࡜࡟ࡼࡗ࡚ᶵᲔⓗ≉ᛶ್ࡢࡤࡽࡘࡁ㸪
2
4
6
䜂䛪䜏İ (%)
8
10
ᅗ㸫 ᥎ᐃᘧ࠿ࡽᮦᩱᐃᩘࡢỴᐃࡉࢀࡓ 052 ᭤⥺
ᯈཌ౫Ꮡᛶ࡟ࡘ࠸࡚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.
ྠ᭤⥺ࡢᮦᩱᐃᩘࡢỴᐃ࡟ᚲせ࡞ᶵᲔⓗ≉ᛶ್ࢆ0.2%
4) N. Saliba and L. Gardner㸸Experimental study of the
⪏ຊ࡜ᘬᙇᙉᗘࡢࡳ࠿ࡽỴᐃ࡛ࡁࡿ᥎ᐃᘧࢆᥦ♧ࡋࡓ㸬
௨ୗ࡟ᮏ◊✲࡛ᚓࡽࢀࡓᡂᯝࢆࡲ࡜ࡵࡿ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
ᅵᮌᏛ఍ㄽᩥ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ࡣᯈཌቑຍ࡟ࡘࢀ࡚ 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%⪏ຊࡢపୗ࡟ẚ࡭࡚ᑠࡉ࠸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 ࡟ẚ࡭࡚ᑠࡉ࠸ഴྥ࡟࠶ࡿ㸬
ᘏࢫࢸࣥࣞࢫ㗰ᯈཬࡧ㗰ᖏ㸪2012.
(6) MRO ᭤⥺ࢆ⏝࠸࡚࣮ࣜࣥ㗰ࡢᛂຊ㸫ࡦࡎࡳ᭤⥺
9) ᘓタ┬㸸ᘓタ஦ᴗ࡬ࡢ᪂⣲ᮦ࣭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