RU2015138604A - Высокопрочный стальной лист с повышенной устойчивостью к замедленному разрушению и низкотемпературной ударной вязкостью, и высокопрочная деталь, изготовленная с его использованием - Google Patents

Высокопрочный стальной лист с повышенной устойчивостью к замедленному разрушению и низкотемпературной ударной вязкостью, и высокопрочная деталь, изготовленная с его использованием Download PDF

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RU2015138604A
RU2015138604A RU2015138604A RU2015138604A RU2015138604A RU 2015138604 A RU2015138604 A RU 2015138604A RU 2015138604 A RU2015138604 A RU 2015138604A RU 2015138604 A RU2015138604 A RU 2015138604A RU 2015138604 A RU2015138604 A RU 2015138604A
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steel sheet
less
strength
strength steel
sheet according
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RU2015138604A
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RU2625366C2 (ru
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Хироюки ТАНАХАСИ
Тосимаса ТОМОКИЕ
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Ниппон Стил Энд Сумитомо Метал Корпорейшн
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    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/012—Layered 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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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
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    • C21—METALLURGY OF IRON
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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
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    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces 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
    • 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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    • 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
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips
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    • C21—METALLURGY OF IRON
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    • C21D2211/00—Microstructure comprising significant phases
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    • C21D2211/004—Dispersions; Precipitations
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  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
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  • Heat Treatment Of Sheet Steel (AREA)
  • Soft Magnetic Materials (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
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  • Heat Treatment Of Steel (AREA)

Claims (33)

1. Высокопрочный стальной лист, содержащий химические компоненты, в масс. %:
С: от 0,20 до 0,42,
Si: от 0,06 до 0,5,
Mn: от 0,2 до 2,2,
Cr: от 0,1 до 2,5,
В: от 0,0005 до 0,01,
О: от 0,0020 до 0,020,
Al: от 0,001 до 0,03,
Ti: от 0,001 до 0,05,
Nb: от 0 до 0,1,
Мо: от 0 до 1,0,
W: от 0 до 0,5,
V: от 0 до 0,5,
Ni: от 0 до 5,0,
Cu: от 0 до 1,0,
N: 0,1 или менее,
Р: 0,03 или менее,
S: 0,02 или менее, и
остальное: Fe и неизбежные примеси,
причем в стали присутствуют от 5×103 частиц на мм2 или более до 1×105 частиц на мм2 или менее оксидов марганца (Мn), имеющих максимальную длину от 1 мкм или более до 5 мкм или менее, и
присутствуют от 1,7×102 частиц на мм2 или более до 5×103 частиц на мм2 или менее сложных Mn-Si-оксидов, имеющих длину короткой оси 1 мкм или более, и длину в продольном направлении 10 мкм или менее.
2. Высокопрочный стальной лист по п. 1, дополнительно содержащий один или более элементов, выбранных из группы, состоящей из, в масс. %:
Nb: от 0,01 до 0,1,
Мо: от 0,01 до 1,0,
W: от 0,01 до 0,5,
V: от 0,01 до 0,5,
Ni: от 0,01 до 5,0, и
Cu: от 0,01 до 1,0.
3. Высокопрочный стальной лист по п. 1 или 2, причем стальной лист является холоднокатаным со степенью обжатия от 35 до 70%.
4. Высокопрочный стальной лист по п. 3, причем стальной лист снабжен покрытием.
5. Высокопрочный стальной лист по п. 4, причем стальной лист имеет на своей поверхности образованный горячим погружением слой Al-покрытия, и на поверхности раздела между слоем Al-покрытия и стальным листом присутствует слой Fe-Αl-Μn-Cr-В-сплава, имеющий толщину 1 мкм или более и 10 мкм или менее.
6. Высокопрочная деталь, полученная нагревом высокопрочного стального листа по п. 3 до температуры, при которой по меньшей мере в части стального листа происходит превращение в аустенитную фазу, и последующего прессования в штампах так, что в одном процессе проводятся формование и закалка.
7. Высокопрочная деталь, полученная нагревом высокопрочного стального листа по п. 4 или 5, до температуры, при которой по меньшей мере в части стального листа происходит превращение в аустенитную фазу, и последующего прессования в штампах так, что в одном процессе проводятся формование и закалка.
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