公开(公告)号：US20070212249A1

公开(公告)日：2007-09-13

申请号：US11744881

申请日：2007-05-06

申请人： Christopher Killmore ,  James Williams

发明人： Christopher Killmore ,  James Williams

IPC分类号： C22C38/12 ,  B22D11/00 ,  C22C38/14 ,  C22C38/04

CPC分类号： B22D11/001 ,  B22D11/0622 ,  B22D11/117 ,  C21D8/0415 ,  C21D2211/004 ,  C22C38/02 ,  C22C38/04 ,  Y10T428/12993

摘要： A steel product or thin steel cast strip comprised of, by weight, less than 0.25% carbon, between 0.20 and 2.0% manganese, between 0.05 and 0.50% silicon, less than 0.06% aluminum, and at least one element selected from the group consisting of titanium between about 0.01% and about 0.20%, niobium between about 0.01% and about 0.20%, molybdenum between about 0.05% and about 0.50%, and vanadium between about 0.01% and about 0.20%, and having a microstructure comprised of a majority bainite, and further comprising fine oxide particles of silicon and iron distributed through the steel microstructure having an average precipitate size less than 50 nanometers. The steel product or thin cast steel strip may have a yield strength of at least 55 ksi (380 MPa) or a tensile strength of at least 500 MPa, or both. The steel product or thin cast steel strip may have a total elongation of at least 6% or 10%. The thin cast steel strip may have thickness less than 3.0 mm, or less than 2.5 mm, or less than 2.0 mm.

摘要翻译： 一种钢产品或薄钢铸造带，其由重量比小于0.25％的碳，0.20％至2.0％的锰，0.05％至0.50％的硅，小于0.06％的铝和至少一种选自以下的元素组成： 约0.01％至约0.20％的铌，约0.01％至约0.20％的铌，约0.05％至约0.50％的钼，约0.01％至约0.20％之间的钒，以及具有大多数的微结构 贝氏体，并且还包含分布在具有小于50纳米的平均沉淀物尺寸的钢微结构的细的氧化硅和铁的氧化物颗粒。 钢产品或薄铸钢带的屈服强度可以至少为55ksi（380MPa）或至少500MPa的拉伸强度，或两者均可。 钢产品或薄铸钢带的总伸长率可以至少为6％或10％。 薄铸钢带的厚度可以小于3.0mm，或小于2.5mm，或小于2.0mm。

公开(公告)号：US20060144553A1

公开(公告)日：2006-07-06

申请号：US11255604

申请日：2005-10-20

申请人： Walter Blejde ,  Rama Mahapatra ,  James Williams ,  Frank Barbaro ,  Philip Renwick ,  Harold Kaul ,  Andrew Phillips ,  Christopher Killmore ,  Lazar Strezov

发明人： Walter Blejde ,  Rama Mahapatra ,  James Williams ,  Frank Barbaro ,  Philip Renwick ,  Harold Kaul ,  Andrew Phillips ,  Christopher Killmore ,  Lazar Strezov

IPC分类号： B22D11/06

CPC分类号： B22D11/001 ,  B22D11/0622 ,  B22D11/117 ,  C21D8/0415 ,  C21D2211/004 ,  C22C38/02 ,  C22C38/04 ,  Y10T428/12993

摘要： A steel product with a high austenite grain coarsening temperature having less than 0.4% carbon, less than 0.06% aluminium, less than 0.01% titanium, less than 0.01% niobium, and less than 0.02% vanadium by weight, and having fine oxide particles containing silicon and iron distributed through the steel microstructure having an average particle size less than 50 nanometers and may be between 5 and 30 nanometers. The steel product may have fine oxide particles distributed through the microstructure capable of restricting ferrite recrystallisation for strain levels up to at least 10.0%, for temperatures up to 750 ° C. with holding times up to 20 minutes. The steel product may be made by continuous casting of steel strip introduced between the casting rolls to form a casting pool of molten carbon steel having a total oxygen content of at least 70 ppm usually less than 250 ppm, and a free oxygen content 20 and 60 ppm, counter rotating the casting rolls.

摘要翻译： 具有低奥氏体晶粒粗化温度的钢产品，具有小于0.4％的碳，小于0.06％的铝，小于0.01％的钛，小于0.01％的铌和小于0.02％的钒，并且具有含有 硅和铁通过平均粒度小于50纳米的钢微结构分布，并且可以在5和30纳米之间。 钢制品可以具有通过微结构分布的细小氧化物颗粒，其能够限制铁素体再结晶，对于高达750℃的温度，至多达到10.0％的应变水平，保持时间长达20分钟。 钢产品可以通过在铸辊之间引入的钢带的连续铸造来制造，以形成总氧含量通常低于250ppm，游离氧含量20和60的熔融碳钢的铸造池 ppm，反转铸辊。