Review㉸㧗ᙇຊ TRIP 㗰ᯈࡢࣉࣞࢫᡂᙧᛶ࡟ཬࡰࡍYAG ࣮ࣞࢨຍᕤࡢᙳ㡪㛗ᆏࠉ᫂ᙪA. Nagasaka ⥴ゝ㏆ᖺ㸪஌⏝㌴ࡢྛ✀࣓ࣥࣂ࣮㢮࡟ࡣඃࢀࡓࣉࣞࢫᡂᙧᛶࢆ᭷ࡍࡿ㧗ᙉᗘపྜ㔠 TRIP 1) 㗰ᯈࡢ㐺⏝ࡀᮇᚅࡉࢀ࡚࠸ࡿ 1)-9) 㸬ࡲࡓ㸪ྜ㔠ඖ⣲ࡣ᫆㓟໬ᛶ࡛࠶ࡿࡓࡵ㗰ᯈ⾲㠃࡛㓟໬≀ࢆᙧᡂࡋࡸࡍࡃ㸪≉࡟ Si ࡣ໬ᡂฎ⌮ᛶ࡟ᝏᙳ㡪ࢆཬࡰࡍࡇ࡜ࡀ▱ࡽࢀ࡚࠸ࡿ 10) 㸬ࡇࢀࡲ࡛ࡢሗ࿌ 7) ࡛ࡣ㸪ẕ┦⤌⧊ࢆไᚚࡋࡓ C-Si-Mn ⣔ TRIP 㗰ࡢఙࡧࣇࣛ
ࣥࢪᛶ࡟ཬࡰࡍ࣮ࣞࢨษ᩿ࡢᙳ㡪ࢆㄪᰝࡋࡓࡶࡢ࡛࠶ࡾ㸪
980MPa ⣭௨ ୖࡢ ㉸ࣁ࢖ࢸࣥࡢఙࡧࣇࣛࣥࢪᛶࢆ⪃៖ ࡋࡓ࡜ࡁ㸪ࡼࡾඃࢀࡓఙࡧࣇࣛࣥࢪᛶࡀᮇᚅࡉࢀࡿẕ┦⤌⧊ࢆ ࣋࢖ ࢽ ࢸ ࢕ࢵ ࢡ ࣇ ࢙ ࣛ ࢖ ࢺ 㸦 Ș bf 㸧 ࡜ ࡋ ࡓ TRIP 㗰㸦TBF 㗰㸧2) ࡢఙࡧࣇࣛࣥࢪᛶ࡟ཬࡰࡍ࣮ࣞࢨษ᩿᮲௳7,8)ࡢᙳ㡪࡟ࡘ࠸࡚ࡢሗ࿌ࡣ࡯࡜ࢇ࡝࡞࠸㸬ࡑࡇ࡛ᮏ◊✲࡛ࡣ㸪M S Ⅼࡢ␗࡞ࡿẕ┦⤌⧊ࢆ࣋࢖ࢽࢸ
࢕ࢵࢡࣇ࢙ࣛ࢖ࢺ࡜ࡋࡓ TRIP 㗰㸦TBF 㗰㸧ᯈࡢఙࡧࣇࣛ
ࣥࢪᛶ࡟ཬࡰࡍ YAG ࣮ࣞࢨ 4) ษ᩿᮲௳ࡢᙳ㡪ࢆㄪᰝࡋࡓ㸬 ᐇ㦂᪉ἲ౪ヨ㗰࡟ࡣ⾲  ࡟♧ࡍ໬Ꮫ⤌ᡂࢆ᭷ࡍࡿ෭ᘏ㗰ᯈ㸦ᯈཌ 1.2mm㸧ࢆ⏝࠸ࡓ㸬TBF 㗰ࡣ㸪950Υ㸪1200s ࡢ࣮࢜ࢫࢸࢼ࢖ࢺ(Ț)໬ᚋ㸪375Υࡲࡓࡣ 450Υ㸪200s ࡢ࣮࢜ࢫࢸࣥࣃฎ⌮ࢆ᪋ࡋࡓ㸦ᅗ 㸧㸬௨ᚋ㸪ࡇࢀࡽࡢ㗰ࢆ TBF375
࠾ࡼࡧ TBF450 ࡜࿧ࡪ㸬ࡇࡇ࡛㸪࣮࢜ࢫࢸࣥࣃ ᗘ࡟ࡣTBF 㗰ࡢ M S Ⅼ㸦420Υ㸧ࡢ๓ᚋࡢ ᗘࢆ᥇⏝ࡋࡓ㸬M SⅬࡣḟᘧࡼࡾồࡵࡓ 9) 㸬ࡽࡢ㗰ࢆ TDP1㹼TDP4 ࡜࿧ࡪ㸬ࡲࡓ㸪ṧ␃࣮࢜ࢫࢸࢼ࢖
ࢺ(Ț R )ࢆྵࡲ࡞࠸ࣇ࢙ࣛ࢖ࢺ࣭࣐ࣝࢸࣥࢧ࢖ࢺ」ྜ⤌⧊
㗰㸦MDP 㗰㸧ࡶ⏝࠸ࡓ㸬ᘬᙇヨ㦂࡟ࡣ㸪ᅽᘏ᪉ྥ࡟స〇ࡋࡓ JIS13㹀 ྕヨ㦂∦㸦ᅗ 㸧ࢆ⏝࠸㸪ࢡࣟࢫ࣊ࢵࢻ㏿ᗘ 1mm/min㸦ᶆⅬ㊥㞳GL㸻50mm㸪ᖹᆒࡦࡎࡳ㏿ᗘ 2.810 㸫 4 /s㸧࡛⾜ࡗࡓ㸬✰ᗈࡆヨ㦂࡟ࡣ㸪┤ᚄ 50mm ࡢ෇ᯈ≧ヨ㦂∦ࢆ⏝࠸㸪ึᮇ✰ᚄ 5mm ࢆ࣮ࣞࢨษ᩿࠾ࡼࡧࣃࣥࢳᡴᢤࡁຍᕤᚋ㸪ᖹ㢌ࣃࣥࢳ࡛ᡂᙧ㸦ᡂᙧ㏿ᗘ 1 mm/min㸧ࡋࡓ㸦ᅗ 㸧㸬࠸ࡎࢀࡢヨ㦂࡟ࡶࢢࣛࣇ࢓࢖ࢺ⣔₶⁥๣ࢆ౑⏝ࡋࡓ㸬ࣞ ࣮ ࢨ ษ ᩿ ࡟ ࡣ 㸪 YAG ࣞ ࣮ ࢨ ຍ ᕤ ᶵ 㸦 ᭱ ኱ ᖹ ᆒ ฟ ຊ350W㸪᭱኱ࣆ࣮ࢡฟຊ 4.5kW㸧ࢆ⏝࠸ࡓ㸬࣮ࣞࢨຍᕤ᮲
௳ࡣ㸪ᖹᆒฟຊ P㸻25㹼100W㸪㸦ࣃࣝࢫ࢚ࢿࣝࢠ࣮E㸻1
㹼4J/P㸪ࣃࣝࢫᖜ 2ms㸪ࣃࣝࢫ⧞㏉ࡋᩘ 25Hz㸧ຍᕤ㏿ᗘ
100mm/min ࡜ࡋ㸪㓟⣲ࢆ࢔ࢩࢫࢺ࢞ࢫ㸦0.5MPa㸧࡜ࡋ㸪ᅽᘏ᪉ྥ࡟ᑐࡋ࡚ 45r᪉ྥ࠿ࡽ࣮ࣞࢨษ᩿ࡋࡓ 5) 㸬ࣃࣥࢳᡴᢤࡁຍᕤ࡟ࡣ㸪࢖ࣥࢫࢺࣟࣥᆺ୓⬟ヨ㦂ᶵࢆ⏝࠸㸪ヨ㦂∦࡟ࢢࣛࣇ࢓࢖ࢺ⣔₶⁥๣ࢆሬᕸࡋࡓ㸬ᡴᢤࡁ㔠ᆺࡢࣈࢵࢩࣗᚄࡣ 5.0mm㸪ࣃࣥࢳ┤ᚄࢆ 4.76mm ࡜ࡋ 㸪 ᡴ ᢤ ࡁ ࢡ ࣜ ࢔ ࣛ ࣥ ࢫ ࢆ ᯈ ཌ ࡢ 10% 㸪 ᡴ ᢤ ࡁ ㏿ ᗘ10mm/min ࡜୍ᐃ࡟ࡋࡓ㸬

M S 㸦Υ㸧㸻550㸫361(%C) 㸫39(%Mn)
 㸫0(%Si) 㸩30(%Al) 㸫5(%Mo) ࣭࣭࣭ 1ẚ㍑࡜ࡋ࡚㸪780Υ㸪1200s ࡢ 2 ┦ᇦ↝↝࡞ࡲࡋᚋ㸪400Υ㸪
1000s ࡢ࣮࢜ ࢫࢸࣥࣃฎ⌮ࢆ᪋ࡋ㸪ẕ┦⤌⧊ࢆ࣏ࣜࢦ ࢼࣝࣇ࢙ࣛ࢖ࢺ࡜ࡋࡓ TRIP 㗰㸦TDP 㗰㸧ࢆస〇ࡋࡓ㸬࡞࠾㸪TDP 㗰ࡣ Si ࠾ࡼࡧ Mn ῧຍ㔞ࢆ࡯ࡰ୍ᐃ࡜ࡋ㸪C ῧຍ㔞ࢆ 0.1㹼0.4mass%ࡢ⠊ᅖ࡛ኚ໬ࡉࡏࡓ㸬௨ᚋ㸪ࡇࢀ

Temperature (Υ)

TA 375 or 450(Υ)
9501200s
㸦Ț㸧TA200s

RTTime (s)ᅗ  TBF 㗰ࡢ⇕ฎ⌮᭤⥺㸦R T ᐊ⾲㸯 ౪ヨ㗰ࡢ໬Ꮫᡂศ (mass㸣)

steel
TBF
TDP1
TDP2
TDP3
TDP4
MDP

C
0.20
0.10
0.20
0.29
0.40
0.14

Si
1.51
1.49
1.51
1.46
1.49
0.21

Mn
1.51
1.50
1.51
1.50
1.50
1.74

P
0.015
0.015
0.015
0.014
0.015
0.013

S
0.00110.00120.00110.00120.00120.0030

Al
0.040
0.038
0.040
0.043
0.045
0.037

ᅗ  JIB13B ྕᘬᙇヨ㦂∦ᙧ≧㸨㛗㔝ᕤᴗ㧗➼ᑓ㛛Ꮫᰯ࣭ᶵᲔᕤᏛ⛉ࠉᩍᤵ㸨㛗㔝ᕤᴗ㧗➼ᑓ㛛Ꮫᰯ࣭ᶵᲔᕤᏛ⛉࣭ᩍᤵ

-4-㸧 ఙࡧࣇࣛࣥࢪᛶఙࡧࣇࣛࣥࢪᛶࡣḟᘧ࡟ࡼࡾ✰ᗈࡆ⋡Ȣ࡛ホ౯ࡋࡓ㸬ᅗ  ࡟✰ᗈࡆ⋡Ȣ࡜ᘬᙇᙉࡉ TS ࡢ㛵ಀࢆ♧ࡍ㸬ࡇࡇ࡛㸪TBF 㗰௨እࡣᖹᆒฟຊࢆ P㸻100W ࡜ࡋ㸪࣮ࣞࢨษ᩿ຍᕤࢆ⾜ࡗࡓ㸬ᅗ 5 (a)࡟࠾࠸࡚㸪ࣃࣥࢳᡴᢤࡁ࡟ẚ㍑
ࡋ࡚࣮ࣞࢨษ᩿ࡢ୧ TBF 㗰ࡢȢࡣ㧗 TS ࡟ࡶ㛵ࢃࡽࡎ㸪㧗࠸್ࢆ♧ࡋࡓ㸬ࡲࡓ㸪࣮ࣞࢨษ᩿᮲௳ࡢᖹᆒฟຊ࡟࠾࠸࡚㸪୧ TBF 㗰ࡢȢࡣ P㸻50W ࡜ẚ࡭㸪P㸻100W ࡢሙྜ࡛ࡉࡽ࡟㧗࠸್ࢆ♧ࡍഴྥ࡟࠶ࡿ㸦P㸻25W ࡣษ᩿࡛ࡁ࡞࠿ࡗࡓ㸧㸬୍᪉㸪ᅗ 5(b)ࡢ TDP 㗰࡟࠾࠸࡚ࡣ 0.1㹼
0.4mass%࡜ C 㔞ࡢቑຍ࡟క࠸㸪ᘬᙇᙉࡉ TS ࡀ㧗ࡃ࡞ࡿࡀ㸪࣮ࣞࢨษ᩿࠾ࡼࡧࣃࣥࢳᡴᢤࡁࡢ✰ᗈࡆ⋡ȢࡣࡑࢀȢ㸻(d f 㸫d 0 ) / d 0 100 %࣭࣭࣭ 2 ࡇࡇ࡛㸪d 0 㸪d f ࡣࡑࢀࡒࢀึᮇ✰ᚄ㸪ࡁ ⿣Ⓨ⏕᫬ࡢ✰ᚄ࡛࠶ࡿ㸬Ț R ࡢึᮇయ✚⋡ f Ț  ࡣ X ⥺ᅇᢡἲ㸦Mo-KȘ ⥺㸧࡟ ࡼ
ࡾ(200)Ș㸪(211)Ș㸪(200)Ț㸪(220)Ț ࠾ࡼࡧ(311)Ț ࡢ 5ࣆ࣮ࢡἲ 11) ࢆ⏝࠸࡚ồࡵࡓ㸬ࡲࡓ㸪Ț R ୰ࡢึᮇⅣ⣲⃰ᗘ C Ț 0 㸦mass㸣㸧ࡣ㸪Cr-KȘ ⥺ࡢᅇᢡ㠃(220)Ț ࠿ࡽồࡵࡓ᱁Ꮚᐃᩘ a Ț 㸦nm㸧ࢆḟᘧ 12) ࡟௦ධࡋ࡚ィ⟬ࡋࡓ㸬C Ț  㸻 a  㸫0.35467 /4.6710 㸫 3  ࣭࣭࣭㸦㸧◳ࡉ ᐃ࡟ࡣࢲ࢖ࢼ࣑ࢵࢡ㉸ᚤᑠ◳ᗘィࢆ⏝࠸㸪◳ࡉࡣࢲ࢖ࢼ࣑ࢵࢡ◳ࡉ 13)㸦ᢲ㎸ࡳ◳ࡉ㸧DHV ࡟ࡼࡾホ౯ࡋࡓ㸬ࡇࡇ࡛㸪ࢲ࢖ࢼ࣑ࢵࢡ◳ࡉࡣᅽᏊᢲ㎸ࡳヨ㦂࡛ࣅࢵ࣮࢝ࢫᅽᏊࢆ⏝࠸࡚㸪㈇Ⲵ୰࡟࠾ࡅࡿヨ㦂ຊ F ࡜ᢲ㎸ࡳ῝ࡉ h ࠿ࡽ⟬ฟࡉࢀࡿ◳ࡉ࡛ḟᘧࡼࡾồࡵࡓ㸦Ⲵ㔜 F㸻
9.81mN㸪㈇Ⲵ㏿ᗘ㸸1.42mN/s㸧㸬
DHV㸻3.858F/h 2  ࣭࣭࣭㸦4㸧㸬 ᐇ㦂⤖ᯝ࠾ࡼࡧ⪃ᐹ(d p 㸻17.4 mm, r p 㸻3.0 mm, d d 㸻22 mm, r d 㸻1 mm) ᚤ⣽⤌⧊࡜ᘬᙇ≉ᛶᅗ  ✰ᗈࡆヨ㦂㔠ᆺᅗ  ࡟ TBF 㗰ࡢ⤌⧊෗┿ࢆ♧ࡍ㸬ᅗ 4(a)ࡣ TBF375 ࡢ⤌⧊㸪ᅗ 4 (b)ࡣ TBF450 ࡢ⤌⧊࡛࠶ࡿ㸬ࣞ࣌ࣛ⭉㣗࡟ࡼ(a)(b)
ࡾ㸪ⓑ࠸㒊ศࡀ Ț R ࠶ࡿ࠸ࡣ࣐ࣝࢸࣥࢧ࢖ࢺ(Ș m )㸪ࢢ࣮ࣞࡢ㒊ศࡀ࣋࢖ࢽࢸ࢕ࢵࢡࣇ࢙ࣛ࢖ࢺ(Ș bf )ࢆ♧ࡍ㸬ࡲࡓ㸪⇕ฎ⌮ᚋࡢ౪ヨ㗰ࡢ➨ 2 ┦࠾ࡼࡧȚ R ≉ᛶ࡜ᘬᙇ≉ᛶࢆ⾲  ࡟♧ࡍ㸬TBF 㗰ࡢ M S Ⅼ㸦420Υ㸧௨ୗࡢ 375Υ࡛࣮࢜ࢫࢸࣥࣃฎ⌮ࢆ᪋ࡋࡓ TBF375 ࡢ⤌⧊ࡣ㸪୺࡟Ș bf ࡜
Ț R ࠿ࡽ࡞ࡾ㸪Ț R ࡢ኱༙ࡣࣇ࢕࣒ࣝ≧࡟Ꮡᅾࡍࡿ 2) 㸬୍᪉㸪450Υ࡛࣮࢜ࢫࢸࣥࣃฎ⌮ࢆ᪋ࡋࡓ TBF450 ࡛ࡣྠᵝ5ȣm࡟Ș bf ࢆẕ┦࡜ࡋ㸪➨ 2 ┦࡜ࡋ࡚Ț R ࡢ௚࡟ 8.1 vol%ࡢȘ m ࡀᏑᅾࡍࡿ㸦⾲ 2㸧㸬ࡇࡢ࡜ࡁ㸪TBF375 ࡜ẚ࡭㸪TBF450ᅗ  TBF 㗰 ࡢ ⤌ ⧊ࡢȚ R ࡢึᮇయ✚⋡ f Ț 0 ࡣቑຍࡍࡿ 2) 㸬ࡲࡓ㸪ᘬᙇᙉࡉ TS(a) TBF375 (b) TBF450
ࡣ TBF450 ࡜ẚ࡭㸪TBF375 ࡛ࡣ 1100MPa ௨ୖ࡜㧗ࡃ࡞ⓑ㸸Ț R ࠶ࡿ࠸ࡣȘ m 㸪ࢢ࣮ࣞ㸸Ș bfࡿ㸬⾲  ౪ヨ㗰ࡢ➨ 2 ┦࠾ࡼࡧȚ R ≉ᛶ࡜ᘬᙇ≉ᛶ steelf Ț0C Ț0TAf ȘmfYSTSUE lTE lRA(䉝)(vol%)(vol%)(vol%) (mass%) (MPa)
(MPa)
(%)
(%)
(%)

TBF375
375
8.9
08.9
1.16
971
1154
4.4
7.8
40.3

TBF450
450
19.3
8.1
11.2
0.96
617
918
14.2
18.2
44.5

TDP1
400
19.9
04.9
1.31
429
651
27.8
37.2
49.2
TDP2400
35.30
9.0
1.38
526
825
31.7
36.0
44.0

TDP3
400
44.1
0
13.2
1.41
562
895
28.6
32.2
41.8

400
55.1
0
17.0
1.45
728
1103
29.2
32.8
41.8
 TDP4
MDP
27.1
27.1
593
783
8.3
13.1
44.5

T A : ࣮࢜ࢫࢸࣥࣃ ᗘ㸪 f, f Ș m  , f Ț 0 : ➨ 2 ┦య✚⋡㸪࣐ࣝࢸࣥࢧ࢖ࢺࡢయ✚⋡㸪ṧ␃࣮࢜ࢫࢸࢼ࢖ࢺࡢึᮇయ
✚⋡㸪C
Ț 0 : ṧ␃࣮࢜ࢫࢸࢼ࢖ࢺ୰ࡢึᮇⅣ⣲⃰ᗘ㸪YS : 㝆అᛂຊ㸪TS : ᘬᙇᙉࡉ㸪UEl : ᆒ୍ఙࡧ㸪TEl : ඲ఙࡧ㸪RA : ⤠ࡾ㸬-5-ࡒࢀపୗࡍࡿ㸦⾲ 2 㸧㸬࡞࠾㸪C 㔞ࡀ 0.3mass% ௨ୖ࡟࡞ࡿ࡜㸪Ⰻዲ࡛࠶ࡗࡓ࣮ࣞࢨษ᩿✰ࡢȢࡀ㸪ࣃࣥࢳᡴᢤࡁ✰ࡢሙྜ࡜ྠ⛬ᗘ࡟ࡲ࡛పୗࡍࡿ㸬࡞࠾㸪MDP 㗰ࡢ࣮ࣞࢨษ᩿✰ࡢȢࡣࣃࣥࢳᡴᢤࡁ✰࡜ྠ⛬ᗘ࡛࠶ࡿ㸬ᅗ  ࡟ఙࡧࣇࣛࣥࢪᛶࡢᣦᶆ࡜ࡋ࡚㸪ᖹᆒฟຊ P ࡢ␗࡞ࡿ TBF 㗰࡟࠾ࡅࡿᘬᙇᙉࡉ TS ࡜✰ᗈࡆ⋡Ȣࡢ✚㸪ࡍ࡞ ࢃ ࡕ ᙉ ᗘ 㸫 ఙ ࡧ ࣇ ࣛ ࣥ ࢪ ᛶ ࣂ ࣛ ࣥ ࢫ TSȢ ࡢ ẚ ㍑ ࢆ♧ࡍ㸬P㸻 100W ࡟࠾࠸࡚㸪 TBF375 ࡢ TSȢࡀ TBF450࡜ẚ࡭㸪 100GPa% ௨ୖ࡜࠸࠺Ⰻዲ࡞ఙࡧࣇࣛࣥࢪᛶࡀᚓࡽࢀࡓ㸬 M S Ⅼ௨ୗࡢ TBF 㗰㸦 TBF375 㸧ࡣ㸪⤌⧊ࡢᚤ⣽໬➼࡟ࡼࡾ㸪ࡁ⿣ࡢⓎ⏕࠾ࡼࡧఏ᧛࡟ᑐࡋ࡚㞀ᐖ≀ࡢᙺ๭ࢆᯝࡓࡍࡇ࡜࡛ 14) 㸪✰ᗈࡆ᫬࡟࣮ࣞࢨษ᩿ࡢຠᯝࢆ㧗ࡵࡿࡇ࡜ࡀ࡛ࡁࡓ࡜⪃࠼ࡽࢀࡿ㸦ᅗ 4(a) 㸧㸬

0. 㸯 mmᅗ  TBF450 㗰࡟࠾ࡅࡿࣃࣥࢳᡴᢤࡁ࡜࣮ࣞࢨ
ษ᩿ࡢษࡾཱྀ᩿㠃ᅗ  ࡟ึᮇ✰ຍᕤᚋࡢࣃࣥࢳᡴᢤࡁ࠾ࡼࡧ࣮ࣞࢨษ᩿
㠃ࡢษࡾཱྀ᩿㠃ࢆ♧ࡍ㸬 TBF450 ࡟࠾࠸࡚㸪ᅗ 7 (a) ࡣࣃ(a)806040ࣥࢳᡴᢤࡁ᩿㠃࡛࠶ࡾ㸪ᅗ 7 (b) ࡣᖹᆒฟຊ P㸻 100W ࡟࠾ࡅࡿ࣮ࣞࢨษ᩿㠃࡛࠶ࡿ㸬୍⯡࡟㸪ࣃࣥࢳᡴᢤࡁ✰࡟ࡣᡴᢤࡁ᪉ྥ࡟క࠸㸪ࡔࢀ㸪ࡏࢇ᩿㠃㸪◚᩿㠃ࡀᙧᡂࡉࢀࡿ 1 㸧㸬ᅗ  ࡟ࡔࢀ㛗ࡉ rp㸪ࡏࢇ᩿㠃㛗ࡉ࠾ࡼࡧ◚᩿㠃㛗ࡉb ࡢ๭ྜ࡜ C 㔞ࡢ㛵ಀࢆ♧ࡍ㸬TDP 㗰࡟࠾࠸࡚㸪C 㔞ࡢቑຍ࡟క࠸㸪ࡏࢇ᩿㠃㛗ࡉࡢ๭ྜࡀῶᑡࡋ 15) 㸪Ȣ್ࢆపୗࡉࡏࡿ୍ ᅉ࡛࠶ࡿ◚᩿㠃㛗ࡉ b ࡢ๭ྜࡣቑຍࡍࡿഴྥ࡟࠶ࡿ㸬ࡲࡓ㸪TBF375 ࠾ࡼࡧ TBF 450 ࡢ b ࡣ TDP2ࡢࡑࢀ࡜ྠ➼࡛㸪㉸㧗ᙉᗘ࡛ࣞ࣋ࣝࡶࢆ⥔ᣢࡋࡓ㸬୍᪉㸪࣮ࣞࢨษ᩿ຍᕤ࡟࠾࠸࡚㸪ᖹᆒฟຊࡢኚ໬࡟࠾࠸࡚ࡶ࣮ࣞࢨษ᩿㠃ࡢษࡾཱྀ᩿㠃ࡣྠ➼࡛㸪᫂☜࡞㐪࠸ࡀぢࡽࢀ࡞࠿ࡗࡓ㸦ᅗ 7 (b) 㸧㸬

200100(b) P=100W
TSȢ=
100GPa %80
TDP1
TDP2
60
TDP3
MDP
40
TDP4
Laser : ‫یە‬
Punch: ‫ۍۑ‬

200500700

80604020900
TS (MPa)1100

rp, ss, bs (%)Ȣ (%)(a) ࣃࣥࢳᡴᢤࡁ㸪 (b) ࣮ࣞࢨษ᩿ P 㸻 100W  㸦 ࡏࢇ᩿㠃㛗ࡉ P=100W
TSȢ=
100GPa %7580
P=1007550
TBF3756050TBF45040Laser : ‫ڦڸ‬
Punch :‫ڧڹ‬

201300ᅗ  ✰ᗈࡆ⋡Ȣ࡜ᘬᙇᙉࡉ TS ࡢ㛵ಀTSȢ(GPa࣭%)120
TBF375100
8060

TBF45040


120

rp
 100

80ss

60

 40bs20 0 TDP1 234
TBF375 TBF450steelᅗ  ࣃࣥࢳᡴᢤࡁ✰࡟࠾ࡅࡿࡔࢀ㛗ࡉ rp㸪ࡏࢇ᩿㠃㛗ࡉ࠾ࡼࡧ◚᩿㠃㛗ࡉ b ࡢ๭ྜ
 ࣮ࣞࢨษ᩿㠃ࡢ⾲㠃⢒ࡉ

200

Laser beam

Punching directionss ࣮ࣞࢨຍᕤ࡟ࡼࡿఙࡧࣇࣛࣥࢪᛶࡢᨵၿᶵᵓ

100(b)(a)

punch

75
50P (W)ᅗ  (a) ࡟ TBF 㗰ࡢษ᩿㠃እほ࠾ࡼࡧษ᩿㠃ࡢṇ㠃࠿ࡽࡢ෗┿ࢆ♧ࡍ㸦ᅗ 9 (b) 㸧㸬TBF375 ࡢ P㸻 100W ࡟࠾࠸࡚㸪ୖ㠃࠿ࡽ࣮ࣞࢨࡀධᑕࡉࢀࡿࡇ࡜࡛㸪ୗ㠃࡟ࢻࣟࢫࡀⓎ⏕ࡍࡿ㸬ྠᵝ࡟㸪P㸻 50 㹼 75W ࡟࠾࠸࡚ࡶࢻࣟࢫࡣⓎ⏕ࡋࡓ㸬100ᅗ  TBF 㗰࡟࠾ࡅࡿᙉᗘ㸫ఙࡧࣇࣛࣥࢪᛶࣂࣛࣥࢫTSȢ ࡜ᖹᆒฟຊ P ࡢẚ㍑-6-ᅗ   TBF 㗰ࡢษ᩿㠃እほ࠾ࡼࡧษ᩿㠃ࡢṇ㠃࠿ࡽࡢ෗┿㸦TBF375㸪 P =100W㸧

5TBF375

321Laser beamRa (ȣm)

4TBF450

05075

100P (W)ᅗ  ⟬⾡ᖹᆒ⢒ࡉ R a ࡜ᖹᆒฟຊ P ࡢ㛵ಀࡲࡓ㸪ᅗ  ࡟⟬⾡ᖹᆒ⢒ࡉ R a ࡜ᖹᆒฟຊ P ࡢ㛵ಀࢆ♧ࡍ㸬 ᐃ࡟ࡣ࣮ࣞࢨ㢧ᚤ㙾ࢆ⏝࠸ࡓ㸬ಸ⋡ࡣ 400 ಸ㸪࢝ ࢵ ࢺ ࢜ ࣇ ᭷ ࡾ 㸦 0.25mm 㸧 ࡜ ࡋ ࡓ 㸬 ᖹ ᆒ ฟ ຊ ࡢ ኚ ໬ ࡟R a ࡣ኱ࡁࡃ౫Ꮡࡏࡎ㸪R a 㸻 2 㹼 4 ȣ m ࡛࠶ࡿ㸬


10 ȣ mᅗ  ࡟㉮ᰝᆺ㟁Ꮚ㢧ᚤ㙾㸦 SEM 㸧࡟ࡼࡿึᮇ✰ຍᕤᚋࡢ࣮ࣞࢨ ษ ᩿ 㠃ࡢ ⤌⧊෗ ┿ࢆ♧ࡍ㸬 TBF375 ࡢ P =100W࡟࠾࠸࡚㸪ษ᩿➃ࡼࡾ࠾ࡼࡑ 30 ȣ m ࡣ࣮ࣞࢨ࡟ࡼࡾ⤌⧊ࡀ⦓ᐦ࡟࡞ࡾ㸪ຍᕤኚ㉁ᒙࡀ⏕ࡌࡿࣃࣥࢳᡴᢤࡁ࡜ẚ࡭㸪Ȣ್ࡀ ᨵ ၿ ࡋ ࡓ ࡜ ⪃࠼ ࡽ ࢀ ࡿ 㸬 ≉ ࡟ 㸪 TBF375 ࡟࠾ ࡅࡿ⤌⧊ࡢᚤ⣽໬ࡣࣃࣥࢳᡴᢤࡁ࡜ྠᵝ㸪࣮ࣞࢨษ᩿ࡋࡓ㗰ᯈ࡟࠾ࡅࡿ᪩ᮇࡢࡁ⿣Ⓨ⏕ࢆᢚไࡍࡿ୍ᅉ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿ 14) 㸬TBF450 ࡢ࣑ࢡࣟ⤌⧊ࡣȚ R ࡢࢧ࢖ࢬࡀ TBF375ࡢࡑࢀ࡜ẚ࡭㸪┦ᑐⓗ࡟኱ࡁࡃ㸦ᅗ 4 㸧㸪Ț R ୰ࡢⅣ⣲⃰ᗘ C Ț 0 ࡀప࠸㸦⾲ 2 㸧㸬ࡇࡢࡇ࡜ࡣȚ R ࡢᏳᐃᛶࢆపୗࡉࡏ㸪ኚ ᙧ ᫬ࡢ Ț R ࡢኚ ែ ࢆ ಁ 㐍 ࡉ ࡏ 㸪 ఙ ࡧ ࣇ ࣛ ࣥࢪᛶࡢపୗࡢ୍ᅉ࡜࡞ࡾ 1) 㸪TBF450 ࡢȢࡣ TBF375 ࡟ẚ㍑ࡋ࡚
పୗࡋࡓ㸦ᅗ 5(a) 㸧㸬ᅗ  ࡟࣮ࣞࢨษ᩿㠃┤ୗࡢ῝ࡉ᪉ྥ࡟࠾ࡅࡿᢲ㎸ࡳ◳ࡉẚ DHVDHV 0 ศᕸࢆ♧ࡍ㸬ࡇࡇ࡛㸪DHV 0 ࡣẕᮦࡢࢲ࢖ࢼ࣑ࢵࢡ◳ࡉ㸪DHV ࡣ࣮ࣞࢨษ᩿㠃ࡢ◳ࡉ࡛࠶ࡿ㸬
TBF375 ࡟࠾ ࠸࡚㸪 ࣮࢜ࣉ࣐࣮ࣥࢡࡀᖹᆒฟຊ P㸻 50W 㸪-7-ᅗ  ึᮇ✰ຍᕤᚋࡢ࣮ࣞࢨษ᩿㠃ࡢ⤌⧊෗┿㸦 TBF375 㸪P =100W 㸧

2.0P=50W
DHV / DHV0 ࣮ࣞࢨษ᩿㠃ࡢ࣑ࢡࣟ⤌⧊

1.0P=100W
0.0020406080100d (ȣm)ᅗ  ࣮ࣞࢨษ᩿㠃┤ୗࡢ῝ࡉ᪉ྥ࡟࠾ࡅࡿᢲ㎸ࡳ◳ࡉẚ DHVDHV 0 ศᕸࢯࣜࢵࢻ࣐࣮ࢡࡀ P㸻 100W ࡛࠶ࡿ㸬ษ᩿㠃ࡢ⇕ᙳ㡪㒊࡛࠶ࡿษ᩿㠃࠿ࡽ 20 ȣ m ࡢ㒊ศ࡜ẕᮦ࡛࠶ࡿ 40 ȣ m ࡢᅗ   ึᮇ✰ຍᕤᚋࡢ࣮ࣞࢨษ᩿㠃ࡢ SEM ⤌⧊㸦(a)TBF375㸪 P 㸻50W㸪 (b) TBF375㸪 P 㸻100W㸧㒊ศࡢ◳ࡉẚ࡟ὀ┠ࡍࡿ࡜㸪ษ᩿㠃࠿ࡽ⣙ 40ȣm㸪◳ࡉẚࡀపୗࡋ㸪ẕᮦ◳ࡉ࡜࡞ࡾ㸪ࡑࢀࡒࢀྠᵝ࡞ഴྥ࡟࠶
ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬TBF450 ࡟࠾࠸࡚ࡶᖹᆒฟຊࡢ┦㐪ࡣぢࡽࢀ࡞࠿ࡗࡓ㸬ᅗ  ࡟ึᮇ✰ຍᕤᚋࡢ࣮ࣞࢨษ᩿㠃ࡢ SEM ⤌⧊ࢆ♧ࡍ㸬ᅗ 13 (a)ࡣ TBF375 ࡟࠾ࡅࡿᖹᆒฟຊ P 㸻50W ࡛ษ᩿ᚋ㸪ᅗ 13 (b)ࡣ P 㸻100W ࡛࠶ࡿ㸬ᅗ 13 (a)࡟࠾࠸࡚ᚤ⣽࡞ࢪࢢࢨࢢࡀほᐹࡉࢀࡿ㸬ᖹᆒฟຊࡢ㐪࠸࡟ࡼࡾษ᩿㠃⾲㠃࡟┦㐪ࡀぢࡽࢀࡓ㸬ࡲࡓ㸪ࡇࡢࢪࢢࢨࢢࡀ✰ᗈࡆ᫬ࡢࡁ⿣Ⓨ⏕ࡢ㉳Ⅼ࡜ࡋ࡚᣺ࡿ⯙࠸㸪TBF375 ࡢ࣮ࣞࢨษ᩿ ࡢ Ȣ ࡀ ప ฟ ຊ 㸦 P 㸻 50W㸧 ഃ ࡛ ┦ ᑐ ⓗ ࡟ ప Ȣ ್ ࡜ ࡞ ࡗࡓ୍ᅉ࡜⪃࠼ࡽࢀࡿ㸦ᅗ 5㸧㸬௒ᚋ㸪పฟຊ࣮ࣞࢨษ᩿࡛ࡢȢ್ࡢᨵၿࡀᮇᚅ࡛ࡁࡿ㸬୍⯡࡟㸪ఙࡧࣇࣛࣥࢪᛶࡢᨵၿ࡟ࡣ㸪 㛫ᡂᙧ 1) ➼࡟ࡼࡾ㸪Ț R ࡢ TRIP ຠᯝࡀ㔜せ࡞ᙺ๭ࢆᯝࡓࡍ㸬ᚑ᮶ࡢ◊✲ ࡼ ࡾ 㸪 YAG ࣞ ࣮ ࢨ ࡟ ࡼ ࡾ ከ 㔞 ࡛ Ᏻ ᐃ ࡞ Ț R ࢆ ᭷ ࡍ ࡿTDP 㗰ࡣ C 㔞ࡀ 0.2mass%ࡲ࡛ࡣᨵၿࡉࢀࡓ 7) 㸬ࡋ࠿ࡋ㸪
980MPa ⣭࡛ࡢᨵၿࡣ༑ศ࡜ࡣゝ࠼࡞࠸㸬ࡑࡇ࡛㸪ᘏ ᛶࡢほⅬ࠿ࡽᒁ㒊ఙࡧ࡟ඃࢀࡿ M S Ⅼࡢ␗࡞ࡿ TRIP ᆺ࣋࢖ࢽࢸ࢕ࢵࢡࣇ࢙ࣛ࢖ࢺ㗰ᯈ㸦TBF375㸧࡟ὀ┠ࡋ㸪࣮ࣞࢨษ᩿࡟ࡼࡾఙࡧࣇࣛࣥࢪᛶࡀᨵၿࡉࢀࡿࡇ࡜ࢆ᫂ࡽ࠿࡟ࡋࡓ㸬ࡲࡓ㸪YAG ࣮ࣞࢨࡢฟຊࢆไᚚࡍࡿࡇ࡜࡛㸪✰ᗈࡆ᫬࡟ఙࡧࣇࣛࣥࢪᛶ࡟ཬࡰࡍ࣮ࣞࢨษ᩿ࡢຠᯝࢆ㧗ࡵࡓࡇ࡜ࢆ᫂ࡽ࠿࡟ࡋࡓ㸬㸲㸬⤖ゝ
TRIP ᆺ ࣋ ࢖ ࢽ ࢸ ࢕ ࢵ ࢡ ࣇ ࢙ ࣛ ࢖ ࢺ 㗰 ᯈ ࡢ ఙ ࡧ ࣇ ࣛ ࣥࢪᛶ࡟ཬࡰࡍ YAG ࣮ࣞࢨษ᩿ࡢᙳ㡪ࢆㄪᰝࡋࡓ㸬୺࡞⤖ᯝࡣ௨ୗࡢ㏻ࡾ࡛࠶ࡿ㸬㸦㸯㸧㉸ࣁ࢖ࢸࣥࡢఙࡧࣇࣛࣥࢪᛶࡣ㸪TRIP ᆺ࣋࢖ࢽࢸ࢕ࢵࢡࣇ࢙ࣛ࢖ࢺ㗰࡛࣮ࣞࢨษ᩿ࡀࣃࣥࢳᡴᢤࡁຍᕤ࡜ẚ࡭㸪ຠᯝⓗ࡟స⏝ࡋࡓ㸬
㸦㸰㸧M S Ⅼ௨ୗࡢ TBF 㗰㸦TBF375㸧ࡣ㸪⤌⧊ࡢᚤ⣽໬➼࡟ࡼࡾ㸪ᘬᙇᙉࡉ࡜✰ᗈࡆ⋡ࡢ✚࡛࠶ࡿᙉᗘ㸫ఙࡧࣇࣛࣥࢪᛶࣂࣛࣥࢫ TS Ȣ࡟࠾࠸࡚㸪✰ᗈࡆ᫬࡟࣮ࣞࢨษ᩿ࡢຠᯝࢆ㧗ࡵࡓ㸬-8-᭱ᚋ࡟㸪ᮏ◊✲ࢆᨭ᥼ࡋ࡚࠸ࡓࡔࡁࡲࡋࡓබ┈㈈ᅋἲே ኳ⏣㈈ᅋ࡟ᑐࡋ㸪῝ࡃឤㅰࡢពࢆ⾲ࡍࡿ࡜࡜ࡶ࡟㸪㛗㔝㧗ᑓᢏ⾡ᐊࡢ࿴⏣୍⚽Ặ㸪≉ู◊✲⏕ࡢᑠᒣᩔྐẶ㸪❑⏣ඃ୍Ặ࠾ࡼࡧ༞ᴗ◊✲⏕ࡢ᪂஭๛Ặ㸪ᡞ㇂༟Ặ࡟࠾♩⏦ࡋୖࡆࡲࡍ㸬ཧ⪃ᩥ⊩1)

K. Sugimoto, A. Nagasaka, M. Kobayashi and S.
Hashimoto : ISIJ Int.,  (1999), 56.
2) K. Sugimoto, S. Song, J. Sakaguchi, A. Nagasaka and T.
Kashima㸸Tetsu-to-Hagane,  (2005), 278㸬3) K. Sugimoto, A. Kanda, R. Kikuchi, S. Hashimoto, T.
Kashima and S. Ikeda : ISIJ Int.,  (2002), 910.
4) 㔠ᒸ ඃ㸸࣮ࣞࢨຍᕤ㸪᪥หᕤᴗ᪂⪺♫㸪(1999), 5㸬5) H. Shirasawa, S. Hashimoto, K. Mimura and K.
Korida㸸Tetsu-to-Hagane,  (1985), 1949㸬
6) H. Hayashi, K. Tezen and T. Amaike㸸 J. Jpn. Soc.
Technol. Plast.,  (1986), 984㸬7) A. Nagasaka, K. Sugimoto, A. Koyama, S. Hashimoto, T.
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