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RU2018143682A - Изделия из высокопрочной стали и способы их изготовления - Google Patents

Изделия из высокопрочной стали и способы их изготовления Download PDF

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RU2018143682A
RU2018143682A RU2018143682A RU2018143682A RU2018143682A RU 2018143682 A RU2018143682 A RU 2018143682A RU 2018143682 A RU2018143682 A RU 2018143682A RU 2018143682 A RU2018143682 A RU 2018143682A RU 2018143682 A RU2018143682 A RU 2018143682A
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mass
product
sheet
steel
stage
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RU2018143682A
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RU2018143682A3 (ru
RU2749413C2 (ru
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Дэвид Пол ХОЙДИК
Эдуардо Аугусто СИЛВА
Мэтью Майкл МАККОСБИ
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Юнайтид Стейтс Стил Корпорэйшн
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/01Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/012Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/01Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/013Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/04Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/04Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/043Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
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    • B32B15/00Layered products comprising a layer of metal
    • B32B15/18Layered products comprising a layer of metal comprising iron or steel
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    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0278Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736Al-base component
    • Y10T428/1275Next to Group VIII or IB metal-base component
    • Y10T428/12757Fe
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T428/12799Next to Fe-base component [e.g., galvanized]
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    • Y10T428/12771Transition metal-base component
    • Y10T428/12861Group VIII or IB metal-base component
    • Y10T428/12951Fe-base component
    • Y10T428/12958Next to Fe-base component
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T428/12965Both containing 0.01-1.7% carbon [i.e., steel]
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    • Y10T428/12771Transition metal-base component
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    • Y10T428/12951Fe-base component
    • Y10T428/12972Containing 0.01-1.7% carbon [i.e., steel]

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Claims (36)

1. Изделие из листовой холоднокатаной стали высокой прочности, содержащее от 0,12 до 0,5 масс. % С, от 1 до 3 масс. % Mn и от 0,8 до 3 масс. % комбинации Si и Al, причем изделие из листовой стали подвергают двухэтапному отжигу, содержит зерна феррита и по существу равноосные зерна остаточного аустенита, среднее аспектное отношение которых составляет менее чем 3:1, а прочность на растяжение и общее относительное удлинение UTS-TE составляют свыше 25000 МПа%.
2. Изделие из листовой холоднокатаной стали высокой прочности по п. 1, в котором Si составляет до 2 масс. %, Al составляет до 2 масс. %, и изделие из листовой стали дополнительно содержит до 0,05 масс. % Ti и до 0,05 масс. % Nb.
3. Изделие из листовой холоднокатаной стали высокой прочности по п. 2, в котором С составляет от 0,15 до 0,4 масс. %, Mn составляет от 1,3 до 2,5 масс. %, Si составляет от 0,2 до 1,8 масс. %, Al составляет до 1,5 масс. %, Ti составляет до 0,03 масс. %, a Nb составляет до 0,03 масс. %.
4. Изделие из листовой холоднокатаной стали высокой прочности по п. 2, в котором С составляет от 0,17 до 0,35 масс. %, Mn составляет от 1,5 до 2,3 масс. %, Si составляет от 0,4 до 1,5 масс. %, Al составляет до 1 масс. %, Ti составляет до 0,02 масс. %, a Nb составляет до 0,02 масс. %.
5. Изделие из листовой холоднокатаной стали высокой прочности по п. 1, в котором феррит составляет по меньшей мере 50 объемных процентов, остаточный аустенит составляет от 5 до 25 объемных процентов, а среднее аспектное отношение зерен остаточного аустенита составляет менее 2:1.
6. Изделие из листовой холоднокатаной стали высокой прочности по п. 1, в котором средний размер зерен остаточного аустенита составляет менее 10 микрон.
7. Изделие из листовой холоднокатаной стали высокой прочности по п. 6, в котором средний размер зерен остаточного аустенита составляет менее 1 микрона.
8. Изделие из листовой холоднокатаной стали высокой прочности по п. 6, в котором изделие из листовой стали содержит менее 15 объемных процентов свежего мартенсита.
9. Изделие из листовой холоднокатаной стали высокой прочности по п. 1, в котором предел прочности на растяжение изделия из листовой стали составляет от 720 до 1100 МПа, а общее относительное удлинение составляет по меньшей мере 20 процентов.
10. Изделие из листовой холоднокатаной стали высокой прочности по п. 1, в котором коэффициент раздачи отверстия изделия из листовой стали превышает 20 процентов.
11. Изделие из листовой холоднокатаной стали высокой прочности по п. 1, в котором UTS-TE составляет по меньшей мере 30000 МПа%.
12. Изделие из листовой холоднокатаной стали высокой прочности по п. 1, дополнительно содержащее цинковое покрытие, нанесенное на изделие из листовой стали.
13. Способ получения изделия из листовой холоднокатаной стали высокой прочности, содержащего от 0,12 до 0,5 масс. % С, от 1 до 3 масс. % марганца и от 0,8 до 3 масс. % комбинации Si и Al, причем способ предусматривает:
выполнение первого этапа отжига изделия из листовой стали для достижения главным образом мартенситной микроструктуры; и
выполнение второго этапа отжига изделия из листовой стали, предусматривающего томление листового изделия в межкритическом интервале при температуре от 720 до 850°C с последующей выдержкой листового изделия при температуре от 370 до 430°С.
14. Способ по п. 13, в котором первый этап отжига выполняют при температуре выше 820°С.
15. Способ по п. 13, в котором первый этап отжига выполняют при температуре от 830 до 940°С.
16. Способ по п. 13, в котором томление согласно второму этапу выполняют при температуре от 720 до 850°С, а выдержку согласно второму этапу выполняют при температуре от 360 до 440°С.
17. Способ по п. 13, в котором между первым этапом и вторым этапом изделие из листовой стали охлаждают до температуры ниже 300°С.
18. Способ по п. 13, в котором между томлением согласно второму этапу и выдержкой согласно второму этапу изделие из листовой стали удерживают при температуре выше 300°С.
19. Способ по п. 13, в котором первый этап отжига выполняют на непрерывной линии отжига и второй этап выполняют на непрерывной линии отжига.
20. Способ по п. 19, в котором для выполнения как первого этапа отжига, так и второго этапа отжига используют одну и ту же непрерывную линию отжига.
21. Способ по п. 19, в котором для выполнения первого этапа отжига и второго этапа отжига используют разные непрерывные линии отжига.
22. Способ по п. 13, в котором первый этап отжига выполняют на непрерывной линии отжига, а второй этап выполняют на непрерывной линии цинкования.
23. Способ по п. 13, дополнительно предусматривающий нанесение покрытия на изделие из листовой стали цинкового покрытия электролитическим способом.
24. Способ по п. 13, в котором изделие из листовой стали содержит зерна феррита и по существу равноосные зерна остаточного аустенита, среднее аспектное отношение которых составляет менее чем 3:1, а прочность на растяжение и общее относительное удлинение UTS⋅TE составляют свыше 25000 МПа%.
25. Способ по п. 13, в котором Si составляет до 2 масс. %, Al составляет до 2 масс. %, и изделие из листовой стали дополнительно содержит до 0,05 масс. % Ti и до 0,05 масс. % Nb.
26. Способ по п. 25, в котором С составляет от 0,15 до 0,4 масс. %, Mn составляет от 1,3 до 2,5 масс. %, Si составляет от 0,2 до 1,8 масс. %, Al составляет до 1,5 масс. %, Ti составляет до 0,03 масс. %, a Nb составляет до 0,03 масс. %.
27. Способ по п. 25, в котором изделие из листовой холоднокатаной стали высокой прочности по п. 2, в котором С составляет от 0,17 до 0,35 масс. %, Mn составляет от 1,5 до 2,3 масс. %, Si составляет от 0,4 до 1,5 масс. %, Al составляет до 1 масс. %, Ti составляет до 0,02 масс. % и Nb составляет до 0,02 масс. %.
28. Способ по п. 13, в котором феррит феррит составляет по меньшей мере 50 объемных процентов, остаточный аустенит составляет от 5 до 25 объемных процентов, а среднее аспектное отношение зерен остаточного аустенита составляет менее 2:1.
29. Способ по п. 13, в котором средний размер зерен остаточного аустенита составляет менее 10 микрон.
30. Способ по п. 29, в котором средний размер зерен остаточного аустенита составляет менее 1 микрона.
31. Способ по п. 13, в котором изделие из листовой стали содержит менее 15 объемных процентов свежего мартенсита.
32. Способ по п. 13, в котором предел прочности на растяжение изделия из листовой стали составляет от 720 до 1100 МПа, а общее относительное удлинение составляет по меньшей мере 20 процентов.
33. Способ по п. 13, в котором коэффициент раздачи отверстия изделия из листовой стали превышает 20 процентов.
34. Способ по п. 13, дополнительно предусматривающий нанесение цинкового покрытия на изделие из листовой стали.
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