JP2017504720A - 強度及び延性に優れた熱処理硬化型鋼板及びその製造方法 - Google Patents
強度及び延性に優れた熱処理硬化型鋼板及びその製造方法 Download PDFInfo
- Publication number
- JP2017504720A JP2017504720A JP2016542201A JP2016542201A JP2017504720A JP 2017504720 A JP2017504720 A JP 2017504720A JP 2016542201 A JP2016542201 A JP 2016542201A JP 2016542201 A JP2016542201 A JP 2016542201A JP 2017504720 A JP2017504720 A JP 2017504720A
- Authority
- JP
- Japan
- Prior art keywords
- hardness
- steel sheet
- martensite
- less
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 79
- 239000010959 steel Substances 0.000 title claims abstract description 79
- 238000010438 heat treatment Methods 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 47
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 8
- 229910000760 Hardened steel Inorganic materials 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 22
- 229910001562 pearlite Inorganic materials 0.000 claims description 19
- 229910000859 α-Fe Inorganic materials 0.000 claims description 19
- 229910001566 austenite Inorganic materials 0.000 claims description 15
- 238000005097 cold rolling Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000010960 cold rolled steel Substances 0.000 claims description 4
- 235000019589 hardness Nutrition 0.000 description 34
- 229910052799 carbon Inorganic materials 0.000 description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- 239000011572 manganese Substances 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000013078 crystal Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 229910001563 bainite Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910000794 TRIP steel Inorganic materials 0.000 description 1
- 238000007545 Vickers hardness test Methods 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Images
Classifications
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- 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
- 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
-
- 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
- C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
-
- 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
- C21D8/0236—Cold rolling
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
- C21D8/0436—Cold rolling
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
- C21D8/0473—Final recrystallisation annealing
-
- 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
-
- 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
-
- 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
- C21D2201/00—Treatment for obtaining particular effects
-
- 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
- C21D2211/001—Austenite
-
- 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
- C21D2211/005—Ferrite
-
- 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
- C21D2211/008—Martensite
-
- 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
- C21D2211/009—Pearlite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Description
これにより、高価な合金元素の活用を最小化しながらも強度及び延性に優れた鋼材の開発に対する必要性が切実な実情である。
5≦(第1硬度−第2硬度)/(第1硬度)×100≦30・・・[関係式(1)]
vr≧(T*/110)2・・・[関係式(2)]
vc≧(T*/80)2・・・[関係式(3)]
炭素は、鋼板の強度を向上させるための必須的な元素であるだけでなく、本発明で具現しようとするマルテンサイトを確保するために適切に添加する必要がある。上記Cの含量が0.05重量%未満である場合は、十分な強度を得ることができないだけでなく、熱処理後の鋼板の微細組織として90体積%以上のマルテンサイト組織を確保することが困難であるという問題がある。これに対し、上記Cの含量が0.25重量%を超過すると、鋼板の延性が低下するという問題があるため、本発明において上記Cの含量は0.05〜0.25重量%に制御することが好ましい。
Siは、脱酸剤として作用するだけでなく、鋼板の強度を向上させる役割をする。但し、上記Siの含量が0.5重量%を超過すると、熱間圧延時に鋼板の表面にスケールが形成されて鋼板の表面品質が低下するという問題があるため、本発明において上記Siの含量は0.5重量%以下(0は除く)に制御することが好ましい。
Mnは、鋼の強度及び硬化能を向上させるだけでなく、鋼の製造工程中に不可避に含有されるSと結合してMnSを形成させることによりSによるクラックの発生を抑制する役割をする。本発明でこのような効果を得るためには、上記Mnの含量が0.1重量%以上であることが好ましい。これに対し、2.0重量%を超過すると、鋼の靭性が低下するという問題があるため、本発明において上記Mnの含量は0.1〜2.0重量%に制御することが好ましい。
Pは、鋼中に不可避に含有される不純物であり、結晶粒界に偏析されて鋼の延性を低下させる主な原因となる元素であるため、できる限り低く制御することが好ましい。理論上、Pの含量は0%に制限することが有利であるが、製造工程上必然的に含有されるしかない。したがって、上限を管理することが重要である。本発明では上記Pの含量の上限を0.05重量%に管理する。
Sは、鋼中に不可避に含有される不純物であり、Mnと反応してMnSを形成して析出物の含量を増加させ、鋼を脆化させる主な原因となる元素であるため、できる限り低く制御することが好ましい。理論上、Sの含量は0%に制限することが有利であるが、製造工程上必然的に含有されることがある。したがって、上限を管理することが重要である。本発明では上記Sの含量の上限を0.03重量%に管理する。
Claims (11)
- 重量%で、C:0.05〜0.25%、Si:0.5%以下(0は除く)、Mn:0.1〜2.0%、P:0.05%以下、S:0.03%以下、残部Fe及びその他不可避不純物を含む鋼板であり、
前記鋼板の微細組織として、第1硬度を有するマルテンサイト及び第2硬度を有するマルテンサイトを90体積%以上含む、熱処理硬化型鋼板。 - 前記第1硬度は前記第2硬度よりさらに大きい硬度値を有し、
前記第1硬度及び前記第2硬度の差異と前記第1硬度との比率は下記関係式1を満たす、請求項1に記載の熱処理硬化型鋼板。
5≦(第1硬度−第2硬度)/(第1硬度)×100≦30・・・[関係式(1)] - 前記第1硬度を有するマルテンサイト及び前記第2硬度を有するマルテンサイトの平均パケットサイズは20μm以下である、請求項1に記載の熱処理硬化型鋼板。
- 前記鋼板の引張強さが1200MPa以上であり、延伸率が7%以上である、請求項1に記載の熱処理硬化型鋼板。
- 重量%で、C:0.05〜0.25%、Si:0.5%以下(0は除く)、Mn:0.1〜2.0%、P:0.05%以下、S:0.03%以下、残部Fe及びその他不可避不純物を含み、微細組織として、フェライト及びパーライトを含む鋼板を冷間圧延及び熱処理して製造される熱処理硬化型鋼板であり、
前記熱処理硬化型鋼板の微細組織は、第1硬度を有するマルテンサイト及び第2硬度を有するマルテンサイトを90体積%以上含み、
前記第1硬度を有するマルテンサイトは熱処理前のパーライト及びその隣接領域で変態されたもので、前記第2硬度を有するマルテンサイトは熱処理前のフェライト及びその隣接領域で変態されたものである、熱処理硬化型鋼板。 - 前記第1硬度及び前記第2硬度の差異と前記第1硬度との比率は下記関係式1を満たす、請求項5に記載の熱処理硬化型鋼板。
5≦(第1硬度−第2硬度)/(第1硬度)×100≦30・・・[関係式(1)] - 前記第1硬度を有するマルテンサイト及び前記第2硬度を有するマルテンサイトの平均パケットサイズは20μm以下である、請求項5に記載の熱処理硬化型鋼板。
- 前記鋼板の引張強さが1200MPa以上であり、延伸率が7%以上である、請求項5に記載の熱処理硬化型鋼板。
- 重量%で、C:0.05〜0.25%、Si:0.5%以下(0は除く)、Mn:0.1〜2.0%、P:0.05%以下、S:0.03%以下、残部Fe及びその他不可避不純物を含み、微細組織として、フェライト及びパーライトを含む鋼板を30%以上の圧下率で冷間圧延する段階と、
前記冷間圧延された鋼板をAr3〜Ar3+500℃の加熱温度(T*)まで加熱する段階と、
前記加熱された鋼板を冷却する段階と、を含み、
前記加熱段階の加熱速度(vr、℃/sec)は下記関係式2を満たし、前記冷却段階の冷却速度(vc、℃/sec)は下記関係式3を満たす、熱処理硬化型鋼板の製造方法。
vr≧(T*/110)2・・・[関係式(2)]
vc≧(T*/80)2・・・[関係式(3)] - 前記加熱された鋼板の冷却時に、高温維持時間(tm)は下記関係式4を満たす、請求項9に記載の熱処理硬化型鋼板の製造方法。
tm≦(8−0.006*T*)2・・・[関係式(4)] - 前記冷却前に、前記鋼板の微細組織は平均直径20μm以下のオーステナイト単相組織である、請求項9に記載の熱処理硬化型鋼板の製造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130161430A KR101568511B1 (ko) | 2013-12-23 | 2013-12-23 | 강도와 연성이 우수한 열처리 경화형 강판 및 그 제조방법 |
KR10-2013-0161430 | 2013-12-23 | ||
PCT/KR2013/012132 WO2015099214A1 (ko) | 2013-12-23 | 2013-12-24 | 강도와 연성이 우수한 열처리 경화형 강판 및 그 제조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2017504720A true JP2017504720A (ja) | 2017-02-09 |
JP6400106B2 JP6400106B2 (ja) | 2018-10-03 |
Family
ID=53479046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2016542201A Active JP6400106B2 (ja) | 2013-12-23 | 2013-12-24 | 強度及び延性に優れた熱処理硬化型鋼板及びその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (2) | US10294541B2 (ja) |
EP (1) | EP3088545B1 (ja) |
JP (1) | JP6400106B2 (ja) |
KR (1) | KR101568511B1 (ja) |
CN (1) | CN105849293B (ja) |
WO (1) | WO2015099214A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020022477A1 (ja) * | 2018-07-27 | 2020-01-30 | 日本製鉄株式会社 | 高強度鋼板 |
WO2020022481A1 (ja) * | 2018-07-27 | 2020-01-30 | 日本製鉄株式会社 | 高強度鋼板 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102043511B1 (ko) * | 2017-12-12 | 2019-11-12 | 주식회사 포스코 | 열처리 경화형 고탄소 강판 및 그 제조방법 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006070328A (ja) * | 2004-09-02 | 2006-03-16 | Sumitomo Metal Ind Ltd | 高強度薄鋼板およびその製造方法 |
JP2011047034A (ja) * | 2009-07-30 | 2011-03-10 | Jfe Steel Corp | 高強度鋼板およびその製造方法 |
JP2011052295A (ja) * | 2009-09-03 | 2011-03-17 | Kobe Steel Ltd | 伸びと伸びフランジ性のバランスに優れた高強度冷延鋼板 |
JP2011179030A (ja) * | 2010-02-26 | 2011-09-15 | Jfe Steel Corp | 曲げ性に優れた超高強度冷延鋼板 |
WO2013105631A1 (ja) * | 2012-01-13 | 2013-07-18 | 新日鐵住金株式会社 | ホットスタンプ成形体及びその製造方法 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2793284B2 (ja) * | 1989-08-29 | 1998-09-03 | 株式会社神戸製鋼所 | 焼付硬化性の優れた超高強度冷延鋼板の製造方法 |
KR100270395B1 (ko) | 1996-12-09 | 2000-11-01 | 이구택 | 프레스 가공성이 우수한 저합금 복합조직형 고강도 냉연강판의 제조방법 |
KR100270396B1 (ko) | 1996-12-27 | 2000-11-01 | 이구택 | 통크레인의 슬라브 매수 자동조절장치 |
TWI290177B (en) | 2001-08-24 | 2007-11-21 | Nippon Steel Corp | A steel sheet excellent in workability and method for producing the same |
KR100608555B1 (ko) * | 2002-03-18 | 2006-08-08 | 제이에프이 스틸 가부시키가이샤 | 연성 및 내피로특성에 우수한 고장력 용융 아연도금강판의제조방법 |
EP1817436A4 (en) | 2004-11-16 | 2009-08-05 | Works Llc Sfp | METHOD AND APPARATUS FOR IRON-BASED ALLOY MICROTREATMENT, AND MATERIAL FROM THE MICROTREATMENT |
US8828154B2 (en) | 2005-03-31 | 2014-09-09 | Jfe Steel Corporation | Hot-rolled steel sheet, method for making the same, and worked body of hot-rolled steel sheet |
KR100716342B1 (ko) | 2005-06-18 | 2007-05-11 | 현대자동차주식회사 | 마르텐사이트형 초고강도 냉연강판 조성물 및 이의 제조방법 |
US10174390B2 (en) | 2006-10-03 | 2019-01-08 | Gary M. Cola, JR. | Microtreatment of iron-based alloy, apparatus and method therefor, and articles resulting therefrom |
KR100782785B1 (ko) | 2006-12-22 | 2007-12-05 | 주식회사 포스코 | 초세립 열연 이상조직강 및 그의 제조 방법 |
JP5407144B2 (ja) * | 2007-03-09 | 2014-02-05 | Jfeスチール株式会社 | 疲労き裂進展抑制に優れる鋼材 |
US20100163140A1 (en) | 2008-06-16 | 2010-07-01 | Cola Jr Gary M | Microtreatment of Iron-Based Alloy, Apparatus and Method Therefor, and Microstructure Resulting Therefrom |
KR101054773B1 (ko) | 2008-09-04 | 2011-08-05 | 기아자동차주식회사 | Twip형 초고강도 강판의 제조방법 |
JP2010065272A (ja) * | 2008-09-10 | 2010-03-25 | Jfe Steel Corp | 高強度鋼板およびその製造方法 |
JP5369712B2 (ja) | 2009-01-28 | 2013-12-18 | Jfeスチール株式会社 | 延性に優れたホットプレス部材、そのホットプレス部材用鋼板、およびそのホットプレス部材の製造方法 |
JP5382421B2 (ja) | 2009-02-24 | 2014-01-08 | 株式会社デルタツーリング | 高強度高靱性薄肉鋼の製造方法及び熱処理装置 |
JP5466552B2 (ja) * | 2010-03-24 | 2014-04-09 | 株式会社神戸製鋼所 | 伸び、伸びフランジ性および溶接性を兼備した高強度冷延鋼板 |
US20130095347A1 (en) * | 2010-06-14 | 2013-04-18 | Kaoru Kawasaki | Hot-stamped steel, method of producing of steel sheet for hot stamping, and method of producing hot-stamped steel |
JP5910168B2 (ja) * | 2011-09-15 | 2016-04-27 | 臼井国際産業株式会社 | Trip型2相マルテンサイト鋼及びその製造方法とそのtrip型2相マルテンサイト鋼を用いた超高強度鋼製加工品 |
KR101322092B1 (ko) * | 2013-08-01 | 2013-10-28 | 주식회사 포스코 | 용접성 및 저온인성이 우수한 내마모용 강판 및 그 제조방법 |
-
2013
- 2013-12-23 KR KR1020130161430A patent/KR101568511B1/ko active IP Right Grant
- 2013-12-24 EP EP13900181.2A patent/EP3088545B1/en active Active
- 2013-12-24 WO PCT/KR2013/012132 patent/WO2015099214A1/ko active Application Filing
- 2013-12-24 CN CN201380081843.2A patent/CN105849293B/zh active Active
- 2013-12-24 US US15/101,384 patent/US10294541B2/en active Active
- 2013-12-24 JP JP2016542201A patent/JP6400106B2/ja active Active
-
2019
- 2019-04-09 US US16/379,116 patent/US20190233915A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006070328A (ja) * | 2004-09-02 | 2006-03-16 | Sumitomo Metal Ind Ltd | 高強度薄鋼板およびその製造方法 |
JP2011047034A (ja) * | 2009-07-30 | 2011-03-10 | Jfe Steel Corp | 高強度鋼板およびその製造方法 |
JP2011052295A (ja) * | 2009-09-03 | 2011-03-17 | Kobe Steel Ltd | 伸びと伸びフランジ性のバランスに優れた高強度冷延鋼板 |
JP2011179030A (ja) * | 2010-02-26 | 2011-09-15 | Jfe Steel Corp | 曲げ性に優れた超高強度冷延鋼板 |
WO2013105631A1 (ja) * | 2012-01-13 | 2013-07-18 | 新日鐵住金株式会社 | ホットスタンプ成形体及びその製造方法 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020022477A1 (ja) * | 2018-07-27 | 2020-01-30 | 日本製鉄株式会社 | 高強度鋼板 |
WO2020022481A1 (ja) * | 2018-07-27 | 2020-01-30 | 日本製鉄株式会社 | 高強度鋼板 |
JP6677364B1 (ja) * | 2018-07-27 | 2020-04-08 | 日本製鉄株式会社 | 高強度鋼板 |
US11505855B2 (en) | 2018-07-27 | 2022-11-22 | Nippon Steel Corporation | High-strength steel sheet |
Also Published As
Publication number | Publication date |
---|---|
KR101568511B1 (ko) | 2015-11-11 |
EP3088545A4 (en) | 2016-12-21 |
US20190233915A1 (en) | 2019-08-01 |
KR20150073572A (ko) | 2015-07-01 |
US20160348207A1 (en) | 2016-12-01 |
EP3088545A1 (en) | 2016-11-02 |
WO2015099214A1 (ko) | 2015-07-02 |
US10294541B2 (en) | 2019-05-21 |
EP3088545B1 (en) | 2019-04-17 |
JP6400106B2 (ja) | 2018-10-03 |
CN105849293B (zh) | 2017-10-17 |
CN105849293A (zh) | 2016-08-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5321605B2 (ja) | 延性に優れる高強度冷延鋼板およびその製造方法 | |
JP5440203B2 (ja) | 高炭素熱延鋼板の製造方法 | |
JP5363922B2 (ja) | 伸びと伸びフランジ性のバランスに優れた高強度冷延鋼板 | |
JP5487215B2 (ja) | 高強度高延伸鋼板及び熱延鋼板、冷延鋼板、亜鉛メッキ鋼板及び亜鉛メッキ合金化鋼板の製造方法 | |
JP2020521048A (ja) | 鋼製部品の製造方法及び対応する鋼製部品 | |
WO2015004906A1 (ja) | 高炭素熱延鋼板およびその製造方法 | |
JPWO2013102986A1 (ja) | 高炭素熱延鋼板およびその製造方法 | |
JP2019524987A (ja) | 低降伏比特性及び低温靭性に優れた高強度鋼板及びその製造方法 | |
JP2010156032A (ja) | 伸びと伸びフランジ性のバランスに優れた高強度冷延鋼板 | |
JP5302840B2 (ja) | 伸びと伸びフランジ性のバランスに優れた高強度冷延鋼板 | |
JP2020503435A (ja) | 低温靭性に優れた低降伏比鋼板及びその製造方法 | |
US20190233915A1 (en) | Quenched steel sheet having excellent strength and ductility and method for manufacturing same | |
JP5280795B2 (ja) | 機械的特性の安定性に優れた高強度冷延鋼板の製造方法 | |
JPWO2013051714A1 (ja) | 鋼板及びその製造方法 | |
JP2022511454A (ja) | 優れた低降伏比と低温靭性特性を有する構造用鋼及びその製造方法 | |
JP6678240B2 (ja) | 連続型セルフブレージング用冷延鋼板およびその製造方法 | |
KR101736590B1 (ko) | 고강도 비조질 선재 및 그 제조방법 | |
JP2015094005A (ja) | 合金鋼の球状化熱処理方法 | |
KR101965149B1 (ko) | 인장강도-연신율 밸런스가 우수한 오스테나이트계 경량 강재 및 그 제조 방법 | |
KR20120138900A (ko) | 성형성이 우수한 자동차용 고강도 냉연강판 및 그 제조 방법 | |
JP5363867B2 (ja) | 伸びおよび伸びフランジ性に優れた高強度冷延鋼板 | |
KR20160063172A (ko) | 고탄소 강판 및 그 제조 방법 | |
KR101676128B1 (ko) | 강도와 연성이 우수한 열처리 경화형 강판 및 그 제조방법 | |
JP6347153B2 (ja) | 鋼材およびその製造方法 | |
KR20160046036A (ko) | 석출 경화형 고강도 및 고연신 저비중 강판 및 그 제조방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20170816 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20170822 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20171121 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20180508 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180806 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20180814 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20180904 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6400106 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |