JP7443502B2 - 合金構造用鋼及びその製造方法 - Google Patents
合金構造用鋼及びその製造方法 Download PDFInfo
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- JP7443502B2 JP7443502B2 JP2022519356A JP2022519356A JP7443502B2 JP 7443502 B2 JP7443502 B2 JP 7443502B2 JP 2022519356 A JP2022519356 A JP 2022519356A JP 2022519356 A JP2022519356 A JP 2022519356A JP 7443502 B2 JP7443502 B2 JP 7443502B2
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- 229910045601 alloy Inorganic materials 0.000 title claims description 78
- 239000000956 alloy Substances 0.000 title claims description 78
- 229910000746 Structural steel Inorganic materials 0.000 title claims description 70
- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 37
- 239000010959 steel Substances 0.000 claims description 37
- 239000002245 particle Substances 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 17
- 229910052729 chemical element Inorganic materials 0.000 claims description 11
- 238000007670 refining Methods 0.000 claims description 11
- 238000005496 tempering Methods 0.000 claims description 11
- 238000010791 quenching Methods 0.000 claims description 10
- 230000000171 quenching effect Effects 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000005098 hot rolling Methods 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 6
- 229910052720 vanadium Inorganic materials 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 229910001562 pearlite Inorganic materials 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- 229910052702 rhenium Inorganic materials 0.000 claims description 2
- 229910052706 scandium Inorganic materials 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 description 17
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000013078 crystal Substances 0.000 description 8
- 239000011572 manganese Substances 0.000 description 8
- 229910052717 sulfur Inorganic materials 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000005275 alloying Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910001566 austenite Inorganic materials 0.000 description 5
- 238000009749 continuous casting Methods 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000002826 coolant Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000002480 mineral oil Substances 0.000 description 4
- 235000010446 mineral oil Nutrition 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000002436 steel type Substances 0.000 description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- HZGFMPXURINDAW-UHFFFAOYSA-N iron zirconium Chemical compound [Fe].[Zr].[Zr] HZGFMPXURINDAW-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 229910000846 In alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910019018 Mg 2 Si Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- -1 MgC 2 Chemical class 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/58—Oils
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/02—Hardening by precipitation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
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- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/004—Dispersions; Precipitations
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- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
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- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
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Description
C:0.35~0.45質量%、Si:0.27~0.35質量%、Mn:0.6~0.8質量%、Al:0.015~0.05質量%、V:0.06~0.1質量%、Zr:0.2~1.0質量%、Mg:0.001~0.005質量%、P:0.025質量%以下、S:0.015質量%以下、N:0.005質量%以下、O:0.001質量%以下、Fe及びその他の不可避的不純物:残部である合金構造用鋼を提案している。
V:0.08~0.1質量%、
Zr:0.3~0.質量7%、
Mg:0.001~0.003質量%。
Zr/N=40~200、
Zr/V=2~16.7、
Zr/C=0.4~2.8。
Mg/O=0.5~3、
Mg/S=0.6~5.0。
製錬、精錬及び鋳造のステップ(1)と、
分塊圧延のステップ(2)と、
二次熱延のステップ(3)と、
熱処理:焼入れ+焼戻しのステップ(4)と、を含む製造方法を提案している。
実施例1~6の合金構造用鋼は、以下のステップを用いて製造される。
(1)電気炉を用いて、製錬、LF精錬、及び鋳造を行う。
(2)分塊圧延:その加熱温度は1150~1250℃である。
(3)二次熱延:その加熱温度は1150~1250℃である。
(4)熱処理:焼入れ+焼戻し、ここで、焼入れ加熱温度を855~890℃、焼入れ冷却速度を50~90℃/sに制御し、冷却剤として鉱油を用い、焼戻し加熱温度を645~670℃、焼戻し冷却速度を50~90℃/sに制御し、冷却剤として鉱油又は水を用いる。
Claims (11)
- 化学元素の質量百分率が、C:0.35~0.45質量%、Si:0.27~0.35質量%、Mn:0.6~0.8質量%、Al:0.015~0.05質量%、V:0.06~0.1質量%、Zr:0.2~1.0質量%、Mg:0.001~0.005質量%、P:0.025質量%以下、S:0.015質量%以下、N:0.005質量%以下、O:0.001質量%以下、Fe及びその他の不可避的不純物:残部である、ことを特徴とする合金構造用鋼板。
- Ce、Hf、La、Re、Sc、及びYの化学元素の少なくとも1つをさらに有し、これらの元素の総添加量が1%以下である、ことを特徴とする請求項1に記載の合金構造用鋼板。
- 前記化学元素の質量百分率が以下の少なくとも1つを満たす、ことを特徴とする請求項1に記載の合金構造用鋼板。
V:0.08~0.1質量%、
Zr:0.3~0.7質量%、
Mg:0.001~0.003質量%。 - 前記化学元素の質量百分率の比が、以下の少なくとも1つを満たす、ことを特徴とする請求項1に記載の合金構造用鋼板。
Zr/N=40~200、
Zr/V=2~16.7、
Zr/C=0.4~2.8。 - 前記化学元素の質量百分率の比が、また、以下の少なくとも1つを満たす、ことを特徴とする請求項1に記載の合金構造用鋼板。
Mg/O=0.5~3、
Mg/S=0.6~5.0。 - 前記合金構造用鋼の微細組織のマトリックスがフェライト+パーライトであり、前記合金構造用鋼はZrC、ZrN、MgO、MgS粒子を有する、ことを特徴とする請求項1に記載の合金構造用鋼板。
- 前記ZrC粒子と前記ZrN粒子の直径が0.2μm~7μmであり、前記ZrC粒子と前記ZrN粒子の合計数が3~15個/mm2である、ことを特徴とする請求項6に記載の合金構造用鋼板。
- 前記MgO粒子と前記MgS粒子の直径が0.2μm~7μmであり、前記MgO粒子と前記MgS粒子の合計数が5~20個/mm2である、ことを特徴とする請求項6に記載の合金構造用鋼板。
- 前記ZrC、ZrN、MgO、MgS粒子の直径が0.2μm~7μmである、ことを特徴とする請求項6に記載の合金構造用鋼板。
- 降伏強さが755MPa以上、引張強さが900MPa以上、伸び率が12%以上、衝撃靭性が100J以上である、ことを特徴とする請求項1~9のいずれか1項に記載の合金構造用鋼板。
- 請求項1~10のいずれか1項に記載の合金構造用鋼板の製造方法であって、
製錬、精錬及び鋳造のステップ(1)と、
分塊圧延のステップ(2)と、
二次熱延のステップ(3)と、
熱処理:焼入れ+焼戻しのステップ(4)と、を含み、
分塊圧延の加熱温度が1150~1250℃であり、二次熱延の加熱温度が1150~1250℃であり、
熱処理において、焼入れ加熱温度を855~890℃、焼入れ冷却速度を50~90℃/sに制御し、焼戻し加熱温度を645~670℃、焼戻し冷却速度を50~90℃/sに制御する、
ことを特徴とする合金構造用鋼板の製造方法。
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001288531A (ja) | 2000-04-05 | 2001-10-19 | Nippon Steel Corp | 結晶粒の粗大化を抑制した機械構造用鋼 |
WO2009057390A1 (ja) | 2007-10-30 | 2009-05-07 | Sumitomo Metal Industries, Ltd. | 拡管性に優れた鋼管及びその製造方法 |
JP2014208876A (ja) | 2013-03-29 | 2014-11-06 | Jfeスチール株式会社 | 高強度熱延鋼板およびその製造方法 |
WO2016059701A1 (ja) | 2014-10-16 | 2016-04-21 | 新日鐵住金株式会社 | 高炭素鋼板及びその製造方法 |
CN106834931A (zh) | 2017-03-28 | 2017-06-13 | 宁波禾顺新材料有限公司 | 一种抗热疲劳的热作模具钢及其制备方法 |
JP2018012855A (ja) | 2016-07-20 | 2018-01-25 | 新日鐵住金株式会社 | 低合金鋼材、低合金鋼管および容器、ならびにその容器の製造方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU521343A1 (ru) * | 1974-11-25 | 1976-07-15 | Институт Проблем Литья Ан Украинской Сср | Литейна сталь |
JPS58164721A (ja) * | 1982-03-24 | 1983-09-29 | Kobe Steel Ltd | 高靭性高強度構造用鋼の製造法 |
JPS6123715A (ja) * | 1984-07-10 | 1986-02-01 | Nippon Steel Corp | 高張力高靭性鋼板の製造法 |
JP2955456B2 (ja) * | 1993-11-12 | 1999-10-04 | 新日本製鐵株式会社 | 疲労強度、冷間加工性の優れた亜共析黒鉛析出鋼 |
GB2287956B (en) * | 1994-03-31 | 1998-02-04 | Daewoo Heavy Ind Co Ltd | Thermal refiningless hot-rolled steel and method of making same |
JP2000219936A (ja) * | 1999-02-01 | 2000-08-08 | Daido Steel Co Ltd | 快削鋼 |
JP3851147B2 (ja) * | 2001-11-14 | 2006-11-29 | 新日本製鐵株式会社 | 非調質高強度・高靭性鍛造品およびその製造方法 |
US20090047169A1 (en) * | 2006-03-15 | 2009-02-19 | Kab. Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Rolled material for fracture split connecting rod excelling in fracture splittability, hot forged part for fracture split connecting rod excelling in fracture splittability, and fracture split connecting rod |
JP2007314819A (ja) * | 2006-05-23 | 2007-12-06 | Kobe Steel Ltd | 耐疲労亀裂進展性に優れた鋼板 |
CN104178691A (zh) * | 2014-08-22 | 2014-12-03 | 首钢总公司 | 一种高强度冶金锯片用钢及其热处理方法 |
CA2966476C (en) * | 2014-11-18 | 2020-05-12 | Jfe Steel Corporation | High toughness and high tensile strength thick steel plate with excellent material homogeneity and production method for same |
TWI605133B (zh) * | 2015-05-26 | 2017-11-11 | Nippon Steel & Sumitomo Metal Corp | Steel plate and its manufacturing method |
JP6855678B2 (ja) * | 2016-02-18 | 2021-04-07 | 日本製鉄株式会社 | 鋼板の製造方法 |
CN105803308B (zh) * | 2016-03-19 | 2018-07-13 | 上海大学 | 一种含镁钙的45MnVS易切削非调质钢及其制造方法 |
WO2017164346A1 (ja) * | 2016-03-25 | 2017-09-28 | 新日鐵住金株式会社 | 高強度鋼板および高強度亜鉛めっき鋼板 |
JP6597901B2 (ja) * | 2016-07-11 | 2019-10-30 | 日本製鉄株式会社 | 耐応力腐食割れ性に優れたボイラー用電縫鋼管及びその製造方法 |
CN107312908A (zh) * | 2017-07-06 | 2017-11-03 | 北京科技大学 | 一种非调质钢中改善MnS夹杂物形态的冶金方法 |
-
2019
- 2019-09-27 CN CN201910920640.7A patent/CN112575242B/zh active Active
-
2020
- 2020-09-27 WO PCT/CN2020/118043 patent/WO2021057954A1/zh active Application Filing
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Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001288531A (ja) | 2000-04-05 | 2001-10-19 | Nippon Steel Corp | 結晶粒の粗大化を抑制した機械構造用鋼 |
WO2009057390A1 (ja) | 2007-10-30 | 2009-05-07 | Sumitomo Metal Industries, Ltd. | 拡管性に優れた鋼管及びその製造方法 |
US20100065166A1 (en) | 2007-10-30 | 2010-03-18 | Kunio Kondo | Steel pipe with excellent expandability and method for producing the same |
JP2014208876A (ja) | 2013-03-29 | 2014-11-06 | Jfeスチール株式会社 | 高強度熱延鋼板およびその製造方法 |
WO2016059701A1 (ja) | 2014-10-16 | 2016-04-21 | 新日鐵住金株式会社 | 高炭素鋼板及びその製造方法 |
JP2018012855A (ja) | 2016-07-20 | 2018-01-25 | 新日鐵住金株式会社 | 低合金鋼材、低合金鋼管および容器、ならびにその容器の製造方法 |
CN106834931A (zh) | 2017-03-28 | 2017-06-13 | 宁波禾顺新材料有限公司 | 一种抗热疲劳的热作模具钢及其制备方法 |
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