chapa de aço tratada a calor, método de produção de uma chapa de aço, uso de uma chapa de aço, peça obtida e veículo

• Main Authors: ARTEM ARLAZAROV, JEAN-MARC PIPARD
• Format: Patent
• Language: Portuguese
• Published: 27.10.2020
• Subjects: ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF ALLOYS OR NON-FERROUS METALS

trata-se de uma chapa de aço tratada a calor e laminada a frio tendo uma composição composta pelos seguintes, expressos em porcentagem em peso 0,10% = carbono = 0,5%, 1% = manganês = 3,4%, 0,5% = silício = 2,5%, 0,03% = alumínio = 1,5%, enxofre = 0,003%, 0,002% = fósforo = 0,02%, nitrogênio = 0,01% e pode conter um ou mais dos seguintes elementos opcionais 0,05% = cromo = 1%, 0,001% = molibdênio = 0,5%, 0,001% = nióbio = 0,1%, 0,001% = titânio = 0,1%, 0,01% = cobre = 2%, 0,01% = níquel = 3%, 0,0001% = cálcio = 0,005%, vanádio = 0,1%, boro = 0,003%, cério = 0,1%, magnésio = 0,010%, zircônio = 0,010% a composição restante sendo composta de ferro e as impurezas inevitáveis causadas pelo processamento, e uma microestrutura da dita chapa de aço laminada compreende por fração de área, 10 a 30% de austenita residual, 5 a 50% de bainita recozida, 10 a 40% de bainita, 1% a 20% de martensita rapidamente arrefecida, e menos do que 30% de martensita temperada onde a presença combinada de bainita e austenita residual deve ser de 30% ou mais. A cold rolled and heat treated steel sheet having a composition with the following elements, expressed in percentage by weight 0.10%≤Carbon≤0.5%, 1%≤Manganese≤3.4%, 0.5%≤Silicon≤2.5%, 0.03%≤Aluminum≤1.5%, Sulfur≤0.003%, 0.002%≤Phosphorus≤0.02%, Nitrogen≤0.01% and can contain one or more of the following optional elements 0.05%≤Chromium≤1%, 0.001%≤Molybdenum≤0.5%, 0.001%≤Niobium≤0.1%, 0.001%≤Titanium≤0.1%, 0.01%≤Copper≤2%, 0.01%≤Nickel≤3%, 0.0001%≤Calcium≤0.005%, Vanadium≤0.1%, Boron≤0.003%, Ceriums≤0.1%, Magnesiums≤0.010%, Zirconiums≤0.010% the remainder composition being composed of iron and the unavoidable impurities caused by processing, and a microstructure of the said rolled steel sheet having by area fraction, 10 to 30% Residual Austenite, 5 to 50% Annealed Bainite, 10 to 40% of Bainite, 1% to 20% Quenched Martensite, and less than 30% Tempered Martensite where the combined presence of Bainite and Residual Austenite shall be 30% or more.