JP7170651B2 - 熱間成形被覆鋼製品の製造方法 - Google Patents
熱間成形被覆鋼製品の製造方法 Download PDFInfo
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- JP7170651B2 JP7170651B2 JP2019546825A JP2019546825A JP7170651B2 JP 7170651 B2 JP7170651 B2 JP 7170651B2 JP 2019546825 A JP2019546825 A JP 2019546825A JP 2019546825 A JP2019546825 A JP 2019546825A JP 7170651 B2 JP7170651 B2 JP 7170651B2
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- 229910000831 Steel Inorganic materials 0.000 title claims description 97
- 239000010959 steel Substances 0.000 title claims description 97
- 238000000034 method Methods 0.000 title claims description 46
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000010410 layer Substances 0.000 claims description 84
- 229910000838 Al alloy Inorganic materials 0.000 claims description 80
- 239000011247 coating layer Substances 0.000 claims description 71
- 229910052710 silicon Inorganic materials 0.000 claims description 54
- 239000002344 surface layer Substances 0.000 claims description 49
- 239000010703 silicon Substances 0.000 claims description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 39
- 238000000137 annealing Methods 0.000 claims description 36
- 239000000758 substrate Substances 0.000 claims description 36
- 238000009792 diffusion process Methods 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 229910000765 intermetallic Inorganic materials 0.000 claims description 13
- 239000012535 impurity Substances 0.000 claims description 10
- 229910015372 FeAl Inorganic materials 0.000 claims description 7
- 238000007598 dipping method Methods 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 34
- 238000000576 coating method Methods 0.000 description 29
- 239000011248 coating agent Substances 0.000 description 23
- 239000003973 paint Substances 0.000 description 19
- 229910052782 aluminium Inorganic materials 0.000 description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 238000011161 development Methods 0.000 description 10
- 230000018109 developmental process Effects 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 229910001566 austenite Inorganic materials 0.000 description 8
- 239000011651 chromium Substances 0.000 description 8
- 239000011572 manganese Substances 0.000 description 7
- 229910000734 martensite Inorganic materials 0.000 description 7
- 229910052804 chromium Inorganic materials 0.000 description 6
- 238000007747 plating Methods 0.000 description 6
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 5
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910001563 bainite Inorganic materials 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 2
- 229910021328 Fe2Al5 Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- LBDSXVIYZYSRII-IGMARMGPSA-N alpha-particle Chemical compound [4He+2] LBDSXVIYZYSRII-IGMARMGPSA-N 0.000 description 2
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 2
- -1 aluminium-iron-silicon Chemical compound 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/12—Aluminium or alloys based thereon
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
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- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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Description
前記熱間成形製品が、鋼基材とアルミニウム合金被覆層とを含み、
前記アルミニウム合金被覆層が、表面層と、前記表面層と前記鋼基材との間の拡散層とを含み、
前記表面層が、0~10面積%のτ相を含み、
前記τ相が、存在する場合には、前記表面層中に分散しており、
前記方法が、少なくとも以下の工程:
0.4重量%以上4.0重量%以下のSiを含む溶融アルミニウム合金浴に前記鋼基材を浸漬することにより、アルミニウム合金被覆層を備えた鋼ストリップ又はシートを提供する工程;
前記被覆鋼ストリップ又はシートを切断してブランクを得る工程;
直接又は間接熱間成形工程によって前記ブランクを熱間成形して産物を得る工程であって、前記ブランクを、又は前記間接熱間成形工程の場合には熱間成形鋼製品を、前記鋼のAc1温度、好ましくはAc3温度を超える温度まで加熱することを含む工程;
得られた産物を冷却して所望の最終ミクロ組織を形成し、前記熱間成形鋼製品を得る工程
を含む方法を提供する。
C:0.01~0.5
P:0.1以下
Nb:0.3以下
Mn:0.4~4.0
S:0.05以下
V:0.5以下
N:0.001~0.030
B:0.08以下
Ca:0.05以下
Si:3.0以下
O:0.008以下
Ni:2.0以下
Cr:4.0以下
Ti:0.3以下
Cu:2.0以下
Al:3.0以下
Mo:1.0以下
W:0.5以下
を含み、残部は鉄及び不可避的不純物である組成を有する。これらの鋼は、熱間成形工程後に非常に良好な機械的特性を有する一方で、Ac1又はAc3温度を超える熱間成形中は成形が非常に容易である。好ましくは、窒素含有量は0.010%以下である。1種以上の任意の元素は存在しない、すなわち、その元素の量は0重量%であってもよいし、その元素は不可避的不純物として存在してもよいことに留意すべきである。
C:0.10~0.25
P:0.02以下
Nb:0.3以下
Mn:1.0~2.4
S:0.005以下
V:0.5以下
N:0.03以下
B:0.005以下
Ca:0.05以下
Si:0.4以下
O:0.008以下
Ni:0.05以下
Cr:1.0以下
Ti:0.3以下
Cu:0.05以下
Al:1.5以下
Mo:0.5以下
W:0.02以下
を含み、残部は鉄及び不可避的不純物である組成を有する。好ましくは、窒素含有量は0.010%以下である。
連続アニーリングによる溶融めっきライン内の溶融めっき直後のストリップとして、
連続アニーリングライン内のストリップであって、周囲温度まで冷却された後のストリップとして、
必要に応じて放射及び/又は対流式加熱炉と組み合わせられた誘導炉内のストリップ、シート又はブランクとして、
予備拡散アニーリング工程に供される。
Siが固溶したFe2Al5相(Fe2Al5 phase with Si in solid solution)からなる金属間化合物層1;
Siが固溶したFeAl3相(FeAl3 phase with Si in solid solution)からなる金属間化合物層2;
溶融アルミニウム合金浴の組成を有する(すなわち、前述のストリップからの不純物及び溶解元素の不可避的存在を含む)アルミニウム合金が固化した、外層
を含む。理想的には、金属間化合物層は上記の化合物のみからなるが、僅かな量のその他の成分に加えて、不可避的不純物及び中間化合物が存在してもよい。より高いケイ素含有量における分散τ相は、そのような不可避的化合物の1つであろう。しかしながら、これらの僅かな量は、被覆鋼基材の特性に悪影響を及ぼさないことが見出されている。
鋼基材とアルミニウム合金被覆層とを含む熱間成形鋼製品であって、
前記アルミニウム合金被覆層が、表面層と、前記表面層と前記鋼基材との間の拡散層とを含み、
前記表面層が、0~10面積%のτ相を含み、
前記τ相が、前記表面層中に分散している、熱間成形鋼製品にも関する。
1.アルミニウム合金被覆層が、0.4重量%以上のケイ素を含み、及び/又は、
2.アルミニウム合金被膜層の表面層に、τ相が存在せず、及び/又は、
3.アルミニウム合金被膜層の最も外側の表面層に、τ相が存在しない、熱間成形製品にも関する。
層1:拡散層;
層2:FeAl2(Fe 46~52重量%、Al 44~50重量%及びSi 3重量%未満);
層3:Fe2Al5(Fe 40~47重量%、Al 51~58重量%及びSi 3重量%未満)
が明らかになった。
層1:拡散層;
層2:Fe2Al5;
層3:τ相(Fe2SiAl2);
層4:Fe2Al5
であった。
Claims (14)
- 熱間成形鋼製品を製造する方法であって、
前記熱間成形製品が、鋼基材とアルミニウム合金被覆層とを含み、
前記アルミニウム合金被覆層が、表面層と、前記表面層と前記鋼基材との間の拡散層とを含み、
前記表面層が、0~10面積%のτ相を含み、
前記τ相が、存在する場合には、前記表面層中に分散しており、
最も外側の前記表面層がτ相を含まず、
前記方法が、少なくとも以下の工程:
0.4重量%以上4.0重量%以下のSi及び1.0重量%未満のZnを含む溶融アルミニウム合金浴に前記鋼基材を浸漬することにより、アルミニウム合金被覆層を備えた鋼ストリップ又はシートを提供する工程;
前記被覆鋼ストリップ又はシートを切断してブランクを得る工程;
直接又は間接熱間成形工程によって前記ブランクを熱間成形して産物を得る工程であって、前記ブランクを、又は前記間接熱間成形工程の場合には熱間成形鋼製品を、前記鋼のAc1温度を超える温度まで加熱することを含む工程;
得られた産物を冷却して所望の最終ミクロ組織を形成し、前記熱間成形鋼製品を得る工程
を含む方法。 - 前記表面層がτ相を含まない、請求項1に記載の方法。
- 前記溶融アルミニウム合金浴が0.6~4.0重量%のケイ素を含む、請求項1又は2に記載の方法。
- 前記溶融アルミニウム合金浴が0.6~1.4重量%のケイ素を含む、請求項1~3のいずれか一項に記載の方法。
- 前記溶融アルミニウム合金浴が少なくとも1.6~4.0重量%のケイ素を含む、請求項1~3のいずれか一項に記載の方法。
- 前記アルミニウム合金被覆層を備えた前記被覆鋼ストリップ又はシートが、前記熱間成形工程の前に、予備拡散アニーリング工程に供される、請求項1~5のいずれか一項に記載の方法。
- 前記アルミニウム合金被覆層を備えた前記被覆ストリップ又はシートが、
溶融めっきライン内の前記溶融めっきの直後のストリップとして、
誘導炉内のストリップ、シート又はブランクとして、
予備拡散アニーリング工程に供される、請求項1~5のいずれか一項に記載の方法。 - 加熱及び熱間成形の前の、前記被覆鋼ストリップ又はシート上の前記アルミニウム合金被覆層が、前記鋼ストリップの表面から外側に向かって、少なくとも以下の3つの異なる層:
ケイ素が固溶したFe2Al5からなる金属間化合物層1
ケイ素が固溶したFeAl3からなる金属間化合物層2
溶融物の組成を有する外層
を含む、請求項1~7のいずれか一項に記載の方法。 - 加熱及び熱間成形の前の、前記アルミニウム合金被覆層の厚さが10~40μmである、請求項1~8のいずれか一項に記載の方法。
- 前記鋼ストリップの組成が、重量%で、
C:0.01~0.5
P:0.1以下
Nb:0.3以下
Mn:0.4~4.0
S:0.05以下
V:0.5以下
N:0.001~0.030
B:0.08以下
Ca:0.05以下
Si:3.0以下
O:0.008以下
Ni:2.0以下
Cr:4.0以下
Ti:0.3以下
Cu:2.0以下
Al:3.0以下
Mo:1.0以下
W:0.5以下
を含み、残部は鉄及び不可避的不純物である、請求項1~9のいずれか一項に記載の方法。 - 鋼基材と、0.4重量%以上4.0重量%以下のSi及び1.0重量%未満のZnを含むアルミニウム合金被覆層とを含む熱間成形鋼製品であって、
前記アルミニウム合金被覆層が、表面層と、前記表面層と前記鋼基材との間の拡散層とを含み、
前記表面層が、0~10面積%のτ相を含み、
前記τ相が、前記表面層中に分散しており、
最も外側の前記表面層がτ相を含まない、熱間成形鋼製品。 - 前記アルミニウム合金被覆層が0.6~4.0重量%のケイ素を含み、及び/又は、
前記表面層にτ相が存在せず、及び/又は、
前記τ相の接触率Cτが0.4以下である、請求項11に記載の熱間成形製品。 - 前記鋼基材の組成が、重量%で、
C:0.01~0.5
P:0.1以下
Nb:0.3以下
Mn:0.4~4.0
S:0.05以下
V:0.5以下
N:0.001~0.030
B:0.08以下
Ca:0.05以下
Si:3.0以下
O:0.008以下
Ni:2.0以下
Cr:4.0以下
Ti:0.3以下
Cu:2.0以下
Al:3.0以下
Mo:1.0以下
W:0.5以下
を含み、残部は鉄及び不可避的不純物である、請求項11又は12に記載の熱間成形製品。 - 請求項1~11のいずれか一項に記載の方法により得られる前記熱間成形製品又は請求項12若しくは13に記載の前記熱間成形製品の使用であって、車両の部品としての使用。
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-
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- 2018-02-23 CN CN201880014405.7A patent/CN110352260B/zh active Active
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2016104880A1 (ko) | 2014-12-24 | 2016-06-30 | 주식회사 포스코 | 내박리성이 우수한 hpf 성형부재 및 그 제조방법 |
WO2017017514A1 (en) | 2015-07-30 | 2017-02-02 | Arcelormittal | Method for the manufacture of a hardened part which does not have lme issues |
JP2018527462A (ja) | 2015-07-30 | 2018-09-20 | アルセロールミタル | Lmeの問題を有さない硬化部品の製造方法 |
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US11319623B2 (en) | 2022-05-03 |
EP3589772A1 (en) | 2020-01-08 |
KR102471269B1 (ko) | 2022-11-28 |
EP3589772B1 (en) | 2023-04-05 |
CA3051002A1 (en) | 2018-09-07 |
CA3051515A1 (en) | 2018-09-07 |
CN110352260A (zh) | 2019-10-18 |
KR102478193B1 (ko) | 2022-12-16 |
ES2943852T3 (es) | 2023-06-16 |
JP7330104B2 (ja) | 2023-08-21 |
PT3589772T (pt) | 2023-05-09 |
US20200165712A1 (en) | 2020-05-28 |
CN110352259A (zh) | 2019-10-18 |
EP3589771B1 (en) | 2023-04-05 |
CN110352260B (zh) | 2021-11-05 |
BR112019015695A2 (pt) | 2020-04-07 |
WO2018158165A1 (en) | 2018-09-07 |
PT3589771T (pt) | 2023-05-09 |
KR20190124210A (ko) | 2019-11-04 |
US20200017948A1 (en) | 2020-01-16 |
MX2019010190A (es) | 2019-11-28 |
EP3589771A1 (en) | 2020-01-08 |
MX2019010192A (es) | 2019-10-02 |
JP2020510755A (ja) | 2020-04-09 |
ES2943270T3 (es) | 2023-06-12 |
BR112019015673A2 (pt) | 2020-07-07 |
JP2020510756A (ja) | 2020-04-09 |
WO2018158166A1 (en) | 2018-09-07 |
KR20190124211A (ko) | 2019-11-04 |
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