JP2009508692A - 多相微構造の鋼部品を製造する方法 - Google Patents
多相微構造の鋼部品を製造する方法 Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 132
- 239000010959 steel Substances 0.000 title claims abstract description 132
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 53
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 46
- 238000001816 cooling Methods 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 3
- 229910000734 martensite Inorganic materials 0.000 claims description 34
- 229910001563 bainite Inorganic materials 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 229910052799 carbon Inorganic materials 0.000 claims description 18
- 238000007654 immersion Methods 0.000 claims description 18
- 229910000794 TRIP steel Inorganic materials 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims description 11
- 229910052804 chromium Inorganic materials 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 230000000717 retained effect Effects 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- 229910052720 vanadium Inorganic materials 0.000 claims description 10
- 238000003723 Smelting Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 7
- 229910052758 niobium Inorganic materials 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 238000007598 dipping method Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 description 19
- 239000010703 silicon Substances 0.000 description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 16
- 230000009466 transformation Effects 0.000 description 13
- 239000011572 manganese Substances 0.000 description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 11
- 229910052748 manganese Inorganic materials 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 8
- 229910001567 cementite Inorganic materials 0.000 description 8
- 239000002131 composite material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 238000002791 soaking Methods 0.000 description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000011651 chromium Substances 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 150000001247 metal acetylides Chemical class 0.000 description 4
- 239000010955 niobium Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005246 galvanizing Methods 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000000844 transformation Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 1
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal 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
- -1 manganese, carbides Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
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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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Abstract
Description
任意に、上記ブランクは、先行冷間変形を受け、
上記ブランクは、Ac1より高くAC3より低い浸漬温度Tsに達するように加熱され、鋼は、ブランクが加熱された後、25領域%以上のオーステナイト含有量を有するように調節された浸漬時間tsの間、この浸漬温度Tsで保持され、
上記加熱されたブランクは、上記部品を加熱成形するために成形装置に移動され、
鋼の微構造は、部品が冷却された後、フェライトを含み、上記部品の各領域において均一である多相微構造であるように、部品は冷却速度Vで装置内で冷却される。
好ましくは1.0重量%以下、より好ましくは0.60重量%以下の含有量のバナジウム。
1.1 加熱速度および冷却速度の影響の評価
400×600mmのブランクが、スチールストリップから切断され、組成は、表1に付与され、DP780(複合組織780)グレードの鋼の組成である。ストリップの厚さは1.2mmであった。鋼のAc1温度は、705℃であった。Ac3温度は、815℃であった。ブランクは、可変浸漬温度Tsに加熱され、5分間の浸漬時間、保持された。それらは、次いで、可変冷却速度Vでの成形、および冷却の両方がされる深絞り装置に直ちに移動され、60sの時間、装置中に保った。深絞りされた部品は、オメガ形状に類似する構造を有していた。
この試験の目的は、冷間成形と比較して、熱間成形の利点を示し、スプリングバックを評価することであった。
200×500mmのブランクが、スチールストリップから切断され、その組成は、表3に示され、TRIP800グレード鋼の組成であった。ストリップの厚さは、1.2mmであった。この鋼のAc1温度は、751℃であり、Ac3温度は、875℃であった。ブランクは、浸漬時間5分間、可変浸漬温度Tsで加熱され、次いで、45℃/sの冷却速度Vで成形、および冷却される深絞り装置に直ちに移動され、60sの時間、装置中で保持した。深絞りされた部品は、オメガ形状に類似する構造を有していた。
Claims (19)
- 多相微構造を有する鋼から作られる部品を製造する方法であって、
前記微構造は、フェライトを含むとともに前記部品の各領域において均一であり、
重量%で、0.01≦C≦0.50%、0.50≦Mn≦3.0%、0.001≦Si≦3.0%、0.005≦Al≦3.0%、Mo≦1.0%、Cr≦l.5%、P≦0.l0%、Ti≦0.20%、V≦l.0%、任意に、Ni≦2.0%、Cu≦2.0%、S≦0.05%、Nb≦0.15%などの1つまたは複数の元素をからなり、組成の残部は、鉄および製錬に起因する不純物である組成のスチールストリップからブランクを切断することからなるステップを含み、
任意に、前記ブランクは、先行冷間変形を受け、
前記ブランクは、Ac1より高くAC3より低い浸漬温度Tsに達するように加熱され、鋼は、ブランクが加熱された後、25領域%以上のオーステナイト含有量を有するように調節された浸漬時間tsの間、この浸漬温度Tsで保持され、
前記加熱されたブランクは、前記部品を加熱成形するために成形装置に移動され、
鋼の微構造は、部品が冷却された後、フェライトを含み、前記部品の各領域において均一である多相微構造であるように、部品は冷却速度Vで装置内で冷却される、方法。 - 鋼の微構造は、部品が冷却された後、25領域%以上のフェライト含有量を有する多相微構造であることを特徴とする、請求項1に記載の方法。
- 鋼の組成は、重量%で、0.01≦C≦0.25%、0.50≦Mn≦2.50%、0.01≦Si≦2.0%、0.005≦Al≦1.5%、0.001≦Mo≦0.50%、Cr≦1.0%、P≦0.10%、Ti≦0.15%、Nb≦0.15%、V≦0.25%を含み、
組成の残部は、鉄および製錬に起因する不純物であり、
ブランクは、鋼が、加熱後に、25〜75領域%のオーステナイト含有量を有するように調節された浸漬時間tsの間、浸漬温度Tsで保持され、
鋼の微構造は、部品が冷却された後、フェライト、およびマルテンサイトまたはベイナイト、あるいはマルテンサイトおよびベイナイトの両方を含む多相微構造である、請求項1または2に記載の方法。 - 鋼は、重量%で、0.08≦C≦0.15%、1.20≦Mn≦2.00%、0.01≦Si≦0.50%、0.005≦Al≦1.0%、0.001≦Mo≦0.10%、Cr≦0.50%、P≦0.10%、Ti≦0.15%、Nb≦0.15%、V≦0.25%を含み、組成の残部は、鉄および製錬に起因する不純物であることをさらに特徴とする、請求項3に記載の方法。
- 浸漬時間tsは、10〜1000sであることを特徴とする、請求項3または4に記載の方法。
- 冷却速度Vは、10℃/sより大きいことを特徴とする、請求項3から5のいずれか一項に記載の方法。
- 鋼の多相構造は、前記部品が冷却された後、25〜75領域%のフェライトおよび25〜75領域%のマルテンサイトおよび/またはベイナイトを含むことを特徴とする、請求項3から6のいずれか一項に記載の方法。
- 鋼は、重量%で、0.05≦C≦0.50%、0.50≦Mn≦3.0%、0.001≦Si≦3.0%、0.005≦Al≦3.0%、Mo≦1.0%、Cr≦l.50%、Ni≦2.0%、Cu≦2.0%、P≦0.10%、S≦0.05%、Ti≦0.20%、V≦1.0%を含み、組成の残部は、鉄および製錬に起因する不純物であり、
鋼の微構造は、部品が冷却された後、フェライト、残留オーステナイト、および任意に、マルテンサイトおよび/またはベイナイトを含むTRIP多相微構造である、請求項1または2に記載の方法。 - 鋼は、重量%で、0.10≦C≦0.30%、0.60≦Mn≦2.0%、0.01≦Si≦2.0%、0.005≦Al≦3.0%、Mo≦0.60%、Cr≦l.50%、Ni≦0.20%、Cu≦0.20%、P≦0.10%、S≦0.05%、Ti≦0.20%、V≦0.60%を含み、
組成の残部は、鉄および製錬に起因する不純物であることをさらに特徴とする、請求項8に記載の方法。 - 浸漬時間tsは、10〜1000sであることを特徴とする、請求項8または9に記載の方法。
- 冷却速度Vは、10〜200℃/sであることを特徴とする、請求項8から10のいずれか一項に記載の方法。
- 部品が冷却された後、TRIP鋼の多相微構造は、25領域%以上の含有量のフェライト、3〜30領域%の残留オーステナイト、および任意にマルテンサイトおよび/またはベイナイトからなることをさらに特徴とする、請求項8から11のいずれか一項に記載の方法。
- 成形操作は、深絞り操作であることを特徴とする、請求項1から12のいずれか一項に記載の方法。
- スチールストリップは、ブランクを成形するために切断される前に、金属コーティングで予め被覆されることを特徴とする、請求項1から13のいずれか一項に記載の方法。
- 金属コーティングは、亜鉛または亜鉛合金をベースとするコーティングであることを特徴とする、請求項14に記載の方法。
- 金属コーティングは、アルミニウムまたはアルミニウム合金をベースとするコーティングであることを特徴とする、請求項14に記載の方法。
- 各領域に均一の多相微構造を有する鋼から作られる部品であって、
前記微構造は、フェライトを含み、請求項1から16のいずれか一項に記載の方法によって得られることが可能な、部品。 - エネルギーを吸収するための、請求項17に記載の鋼部品の使用。
- 請求項17に記載の鋼部品を含む、陸上自動車。
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- 2006-09-18 WO PCT/FR2006/002135 patent/WO2007034063A1/fr active Application Filing
- 2006-09-18 EP EP10010435A patent/EP2287344A1/fr not_active Withdrawn
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- 2006-09-18 KR KR1020117023104A patent/KR20110121657A/ko active Search and Examination
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- 2006-09-18 CN CN2006800393555A patent/CN101292049B/zh active Active
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- 2006-09-18 US US12/067,533 patent/US8114227B2/en active Active
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Cited By (8)
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JP2012237066A (ja) * | 2011-04-28 | 2012-12-06 | Kobe Steel Ltd | 熱間プレス成形品、その製造方法および熱間プレス成形用薄鋼板 |
US9475113B2 (en) | 2011-04-28 | 2016-10-25 | Kobe Steel, Ltd. | Process for producing hot press-formed product |
JP2013014841A (ja) * | 2011-06-10 | 2013-01-24 | Kobe Steel Ltd | 熱間プレス成形品、その製造方法および熱間プレス成形用薄鋼板 |
JP2013220449A (ja) * | 2012-04-18 | 2013-10-28 | Mazda Motor Corp | 鋼板のプレス成形方法及びその成形品 |
KR20160097347A (ko) | 2014-01-06 | 2016-08-17 | 신닛테츠스미킨 카부시키카이샤 | 열간 성형 부재 및 그 제조 방법 |
US10266911B2 (en) | 2014-01-06 | 2019-04-23 | Nippon Steel & Sumitomo Metal Corporation | Hot-formed member and manufacturing method of same |
US10774405B2 (en) | 2014-01-06 | 2020-09-15 | Nippon Steel Corporation | Steel and method of manufacturing the same |
JP2018536583A (ja) * | 2015-12-09 | 2018-12-13 | アルセロールミタル | 塑性変形に対する耐性が変化する横断方向のビームを備えた車両下部構造 |
Also Published As
Publication number | Publication date |
---|---|
CN101292049A (zh) | 2008-10-22 |
PL1929053T3 (pl) | 2011-10-31 |
KR20080053312A (ko) | 2008-06-12 |
WO2007034063A1 (fr) | 2007-03-29 |
RU2403291C2 (ru) | 2010-11-10 |
EP2287344A1 (fr) | 2011-02-23 |
KR20130017102A (ko) | 2013-02-19 |
MA29790B1 (fr) | 2008-09-01 |
US20120211128A1 (en) | 2012-08-23 |
ZA200802385B (en) | 2009-01-28 |
BRPI0616261A2 (pt) | 2011-06-14 |
CA2623146C (fr) | 2011-03-22 |
JP5386170B2 (ja) | 2014-01-15 |
US10294557B2 (en) | 2019-05-21 |
EP1929053B1 (fr) | 2011-06-22 |
ES2366133T3 (es) | 2011-10-17 |
KR20110121657A (ko) | 2011-11-07 |
ATE513932T1 (de) | 2011-07-15 |
UA96739C2 (ru) | 2011-12-12 |
US20080308194A1 (en) | 2008-12-18 |
EP1929053A1 (fr) | 2008-06-11 |
KR20120099526A (ko) | 2012-09-10 |
BRPI0616261B1 (pt) | 2014-02-04 |
KR101453697B1 (ko) | 2014-10-22 |
CN101292049B (zh) | 2011-12-14 |
US8114227B2 (en) | 2012-02-14 |
EP1767659A1 (fr) | 2007-03-28 |
CA2623146A1 (fr) | 2007-03-29 |
RU2008115444A (ru) | 2009-10-27 |
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