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    • 5. 发明授权
    • High strength steel having good toughness
    • 高强度钢具有良好的韧性
    • US08636856B2
    • 2014-01-28
    • US13031131
    • 2011-02-18
    • Eduardo AltschulerTeresa PerezEdgardo LopezConstantino EspinosaGonzalo Gomez
    • Eduardo AltschulerTeresa PerezEdgardo LopezConstantino EspinosaGonzalo Gomez
    • C21D9/08
    • C22C38/50C21D1/25C21D8/105C21D9/08C21D2211/008C22C38/002C22C38/02C22C38/04C22C38/06C22C38/22C22C38/26C22C38/44C22C38/46C22C38/48Y10T428/12
    • Embodiments of the present disclosure comprise carbon steels and methods of manufacture. In one embodiment, quenching and tempering procedure is performed in which a selected steel composition is formed and heat treated to yield a slightly tempered microstructure having a fine carbide distribution. In another embodiment, a double austenizing procedure is disclosed in which a selected steel composition is formed and subjected to heat treatment to refine the steel microstructure. In one embodiment, the heat treatment may comprise austenizing and quenching the formed steel composition a selected number of times (e.g., 2) prior to tempering. In another embodiment, the heat treatment may comprise subjecting the formed steel composition to austenizing, quenching, and tempering a selected number of times (e.g., 2). Steel products formed from embodiments of the steel composition in this manner (e.g., seamless tubular bars and pipes) will possess high yield strength, e.g., at least about 165 ksi, while maintaining good toughness.
    • 本公开的实施例包括碳钢和制造方法。 在一个实施例中,进行淬火和回火程序,其中形成所选择的钢组合物并进行热处理以产生具有细小碳化物分布的轻微回火的微结构。 在另一个实施方案中,公开了一种双重奥氏体化方法,其中形成所选择的钢组合物并进行热处理以精炼钢微观结构。 在一个实施方案中,热处理可以包括在回火之前选择次数(例如2)奥氏体化和淬火所形成的钢组合物。 在另一个实施方案中,热处理可以包括使形成的钢组合物经受选定次数(例如2)的奥氏体化,淬火和回火。 以这种方式(例如,无缝管状条和管)由钢组合物的实施方案形成的钢产品将具有高屈服强度,例如至少约165ksi,同时保持良好的韧性。