JP2019527771A - 1500MPaレベル高強伸度積自動車用鋼及びその製造方法 - Google Patents
1500MPaレベル高強伸度積自動車用鋼及びその製造方法 Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 117
- 239000010959 steel Substances 0.000 title claims abstract description 117
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- 229910001566 austenite Inorganic materials 0.000 claims abstract description 65
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 39
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 16
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 229910052729 chemical element Inorganic materials 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
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- 238000000034 method Methods 0.000 claims description 27
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- 238000005496 tempering Methods 0.000 claims description 12
- 238000005098 hot rolling Methods 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 229910052720 vanadium Inorganic materials 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims description 6
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- 230000000052 comparative effect Effects 0.000 description 18
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- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 10
- 230000009471 action Effects 0.000 description 8
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- 230000002441 reversible effect Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 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
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- 229910052758 niobium Inorganic materials 0.000 description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
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- 229910052717 sulfur Inorganic materials 0.000 description 2
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910000937 TWIP steel Inorganic materials 0.000 description 1
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
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- 239000000956 alloy Substances 0.000 description 1
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Abstract
Description
本発明は一種の鋼種及びその製造方法と使用に関し、特に自動車用鋼及びその製造方法に関する。
自動車の「軽量化」により、超高強度鋼板は自動車構造部品によく応用されるようになる。現在で使用量が最も大きい鋼板は、例えば二相鋼、マルテンサイト鋼、変態誘起塑性鋼(TRIP鋼)、複相鋼等であり、それらの強伸度積は最大で約10GPa%程度である。例えば、超高強度マルテンサイト鋼の引張強度は1500MPaレベルである場合、その伸度は約5%程度であり、自動車分野における自動車の安全性能および製造過程中の成形性能に対する二重要求を満たせない。前世紀末、高強伸度積のオーステナイト鋼と双晶誘起塑性鋼(TWIP鋼)は相次いで開発され、それらの引張強度は800〜1000MPaで、伸度は60%も高く、強伸度積は60GPa%レベルにも達しており、2代目の自動車用鋼と言われる。2代目の自動車用鋼は、大量の合金元素が加えられており、コストが高いと共に、その製造性も劣ることから、その汎用化過程には絶大な制限がある。そのため、強伸度積が30GPa%超え、高強度と高伸度を兼ね備え、コストが低い3代目の自動車用鋼は広範に注目されている。
本発明の目的の一つは、1500MPaレベルに達することができ、且つその強伸度積が30GPa%以上である1500MPaレベル高強伸度積自動車用鋼を提供することにある。
C:0.1%〜0.3%、Si:0.1%〜2.0%、Mn:7.5%〜12%、Al:0.01%〜2.0%であり;残部は鉄および他の不可避不純物であり;
微細組織はオーステナイト+マルテンサイト+フェライト又はオーステナイト+マルテンサイトである、1500MPaレベル高強伸度積自動車用鋼を提供する。
(1)製錬・鋳造;
(2)熱間圧延;
(3)ベル型炉焼鈍:焼鈍温度を600〜700℃にし、焼鈍時間を1〜48hにする;
(4)冷間圧延;
(5)冷間圧延後の一回目の焼鈍:焼鈍温度をAc1とAc3温度の間にし、焼鈍時間を5min超えにする;
(6)冷間圧延後の二回目の焼鈍:焼鈍温度を750〜850℃にし、焼鈍時間を1〜10minにする;
(7)焼戻:焼戻温度を200〜300℃にし、焼戻時間を3min以上にする;
工程を順次に含む、本発明にかかる1500MPaレベル高強伸度積自動車用鋼の製造方法を提供することにある。
以下、図面の説明および具体的な実施例に基づいて、本発明にかかる1500MPaレベル高強伸度積自動車用鋼及びその製造方法をさらに解釈・説明するが、該解釈・説明は本発明の技術方案を不当に制限するものではない。
前記実施例1〜8の1500MPaレベル高強伸度積自動車用鋼および比較例1〜4の鋼板は、下記工程を用いて製造された:
(1)製錬・鋳造:転炉製錬を採用し、表1に示すように各化学元素の質量百分率を制御した。
(5)冷間圧延後の一回目の焼鈍:焼鈍温度をAc1とAc3温度の間にし、焼鈍時間を5min超えにした。
なお、工程(2)において、熱間圧延鋼板の厚さは8mm以下であった。工程(4)において、冷間圧延鋼板の厚さは2.5mm以下であった。
Claims (9)
- その化学元素が質量百分率で:
C:0.1%〜0.3%、Si:0.1%〜2.0%、Mn:7.5%〜12%、Al:0.01%〜2.0%であり;残部は鉄および他の不可避不純物であり;
微細組織はオーステナイト+マルテンサイト+フェライト又はオーステナイト+マルテンサイトであることを特徴とする、1500MPaレベル高強伸度積自動車用鋼。 - その化学元素はさらに、Nb:0.01〜0.07%、Ti:0.02〜0.15%、V:0.05〜0.20%、Cr:0.15〜0.50%、Mo:0.10〜0.50%の中の少なくとも一つを含むことを特徴とする、請求項1に記載の1500MPaレベル高強伸度積自動車用鋼。
- その微細組織はオーステナイト+マルテンサイト+フェライトである場合、オーステナイト相の割合は20%〜40%であり、マルテンサイト相の割合は50%〜70%であることを特徴とする、請求項1又は2に記載の1500MPaレベル高強伸度積自動車用鋼。
- その微細組織はオーステナイト+マルテンサイトである場合、オーステナイト相の割合は20%〜50%であることを特徴とする、請求項1又は2に記載の1500MPaレベル高強伸度積自動車用鋼。
- その強伸度積は30GPa%以上であることを特徴とする、請求項1に記載の1500MPaレベル高強伸度積自動車用鋼。
- (1)製錬・鋳造;
(2)熱間圧延;
(3)ベル型炉焼鈍:焼鈍温度を600〜700℃にし、焼鈍時間を1〜48hにする;
(4)冷間圧延;
(5)冷間圧延後の一回目の焼鈍:焼鈍温度をAc1とAc3温度の間にし、焼鈍時間を5min超えにする;
(6)冷間圧延後の二回目の焼鈍:焼鈍温度を750〜850℃にし、焼鈍時間を1〜10minにする;
(7)焼戻:焼戻温度を200〜300℃にし、焼戻時間を3min以上にする;
工程を順次に含む、請求項1〜5のいずれかに記載の1500MPaレベル高強伸度積自動車用鋼の製造方法。 - 前記工程(2)において、鋳造ビレットを1100〜1260℃に加熱してから、圧延を制御し、圧延開始温度を950〜1150℃にし、最終圧延温度を750〜900℃にし、巻取り温度を500〜850℃にし、巻取り後に室温に冷却し、全マルテンサイト組織を得ることを特徴とする、請求項6に記載の1500MPaレベル高強伸度積自動車用鋼の製造方法。
- 前記工程(4)において、冷間圧延圧下量を40%以上にすることを特徴とする、請求項6に記載の1500MPaレベル高強伸度積自動車用鋼の製造方法。
- 前記工程(3)と(4)の間には、さらに酸洗工程があることを特徴とする、請求項6に記載の1500MPaレベル高強伸度積自動車用鋼の製造方法。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2020132913A (ja) * | 2019-02-14 | 2020-08-31 | 日本製鉄株式会社 | 耐摩耗厚鋼板およびその製造方法 |
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Families Citing this family (15)
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102912219A (zh) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | 一种高强塑积trip钢板及其制备方法 |
WO2015102050A1 (ja) * | 2014-01-06 | 2015-07-09 | 新日鐵住金株式会社 | 鋼材およびその製造方法 |
WO2016063467A1 (ja) * | 2014-10-24 | 2016-04-28 | Jfeスチール株式会社 | 高強度ホットプレス部材およびその製造方法 |
JP2017145468A (ja) * | 2016-02-18 | 2017-08-24 | 新日鐵住金株式会社 | 高強度鋼板 |
JP6193219B2 (ja) * | 2011-05-18 | 2017-09-06 | ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフトThyssenKrupp Steel Europe AG | 高強度鋼板製品及びその製造方法 |
JP2019523827A (ja) * | 2016-06-21 | 2019-08-29 | ポスコPosco | 降伏強度に優れた超高強度高延性鋼板及びその製造方法 |
JP6625530B2 (ja) * | 2013-07-11 | 2019-12-25 | コンステリウム ヌフ ブリザックConstellium Neuf Brisach | 自動車ボディ構造用のアルミニウム合金製薄板 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0325530Y2 (ja) | 1986-01-13 | 1991-06-03 | ||
JPH05195156A (ja) * | 1991-11-15 | 1993-08-03 | Nippon Steel Corp | 溶接熱影響部靱性の優れた高マンガン超高張力鋼およびその製造方法 |
CN101928876B (zh) * | 2009-06-22 | 2013-07-31 | 鞍钢股份有限公司 | 加工性优良的trip/twip高强塑性汽车钢及其制备方法 |
CN101638749B (zh) * | 2009-08-12 | 2011-01-26 | 钢铁研究总院 | 一种低成本高强塑积汽车用钢及其制备方法 |
US20130167983A1 (en) * | 2010-09-09 | 2013-07-04 | Tata Steel Uk Limited | Super bainite steel and method for manufacturing it |
US9617614B2 (en) * | 2011-10-24 | 2017-04-11 | Jfe Steel Corporation | Method for manufacturing high strength steel sheet having excellent formability |
KR101382981B1 (ko) * | 2011-11-07 | 2014-04-09 | 주식회사 포스코 | 온간프레스 성형용 강판, 온간프레스 성형 부재 및 이들의 제조방법 |
CN102758133B (zh) * | 2012-07-26 | 2013-12-25 | 宝山钢铁股份有限公司 | 一种1000MPa级别的高强塑积汽车用钢及其制造方法 |
CN102925790B (zh) * | 2012-10-31 | 2014-03-26 | 钢铁研究总院 | 一种连续退火工艺生产高强塑积汽车用钢板的方法 |
CN103103438B (zh) * | 2013-03-07 | 2015-04-01 | 北京科技大学 | 一种高强度高塑性中锰冷轧钢板及其制造方法 |
KR101891019B1 (ko) * | 2014-05-29 | 2018-08-22 | 신닛테츠스미킨 카부시키카이샤 | 열처리 강재 및 그 제조 방법 |
CN104328360B (zh) * | 2014-11-20 | 2017-02-22 | 北京科技大学 | 双相孪生诱导塑性超高强度汽车钢板及其制备工艺 |
CN104651734B (zh) * | 2014-12-11 | 2017-03-29 | 武汉钢铁(集团)公司 | 1000MPa级高强度高塑性含铝中锰钢及其制造方法 |
JP6168118B2 (ja) * | 2015-10-19 | 2017-07-26 | Jfeスチール株式会社 | ホットプレス部材およびその製造方法 |
JP6222198B2 (ja) * | 2015-10-19 | 2017-11-01 | Jfeスチール株式会社 | ホットプレス部材およびその製造方法 |
EP3438316B1 (en) * | 2016-03-29 | 2022-03-09 | JFE Steel Corporation | Steel sheet for hot pressing and production method therefor, and hot press member and production method therefor |
CN106244918B (zh) | 2016-07-27 | 2018-04-27 | 宝山钢铁股份有限公司 | 一种1500MPa级高强塑积汽车用钢及其制造方法 |
-
2016
- 2016-07-27 CN CN201610601222.8A patent/CN106244918B/zh active Active
-
2017
- 2017-07-25 US US16/320,235 patent/US11047027B2/en active Active
- 2017-07-25 KR KR1020197004638A patent/KR102251635B1/ko active IP Right Grant
- 2017-07-25 WO PCT/CN2017/094247 patent/WO2018019220A1/zh unknown
- 2017-07-25 EP EP17833523.8A patent/EP3492618B1/en active Active
- 2017-07-25 JP JP2019503712A patent/JP6808811B2/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6193219B2 (ja) * | 2011-05-18 | 2017-09-06 | ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフトThyssenKrupp Steel Europe AG | 高強度鋼板製品及びその製造方法 |
CN102912219A (zh) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | 一种高强塑积trip钢板及其制备方法 |
JP6625530B2 (ja) * | 2013-07-11 | 2019-12-25 | コンステリウム ヌフ ブリザックConstellium Neuf Brisach | 自動車ボディ構造用のアルミニウム合金製薄板 |
WO2015102050A1 (ja) * | 2014-01-06 | 2015-07-09 | 新日鐵住金株式会社 | 鋼材およびその製造方法 |
WO2016063467A1 (ja) * | 2014-10-24 | 2016-04-28 | Jfeスチール株式会社 | 高強度ホットプレス部材およびその製造方法 |
JP2017145468A (ja) * | 2016-02-18 | 2017-08-24 | 新日鐵住金株式会社 | 高強度鋼板 |
JP2019523827A (ja) * | 2016-06-21 | 2019-08-29 | ポスコPosco | 降伏強度に優れた超高強度高延性鋼板及びその製造方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020132913A (ja) * | 2019-02-14 | 2020-08-31 | 日本製鉄株式会社 | 耐摩耗厚鋼板およびその製造方法 |
JP7277711B2 (ja) | 2019-02-14 | 2023-05-19 | 日本製鉄株式会社 | 耐摩耗厚鋼板 |
EP4296385A4 (en) * | 2021-03-08 | 2024-08-07 | Kobe Steel Ltd | METHOD FOR MANUFACTURING STEEL SHEET |
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