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    • 1. 发明授权
    • Martensitic stainless steel strengthened by Ni3Ti η-phase precipitation
    • 通过Ni3Ti和相变析出强化马氏体不锈钢
    • US07879159B2
    • 2011-02-01
    • US11814780
    • 2006-01-25
    • James WrightJin-Won Jung
    • James WrightJin-Won Jung
    • C22C38/50C22C38/52C22C38/44
    • C22C38/004C21D6/004C21D6/007C21D2211/008C22C38/06C22C38/44C22C38/50C22C38/52
    • A precipitation-hardened stainless maraging steel which exhibits a combination of strength, toughness, and corrosion resistance comprises by weight about: 8 to 15% chromium (Cr), 2 to 15% cobalt (Co), 7 to 14% nickel (Ni), and up to about 0.7% aluminum (Al), less than about 0.4% copper (Cu), 0.5 to 2.6% molybdenum (Mo), 0.4 to less than about 0.75% titanium (Ti), up to about 0.5% tungsten (W), and up to about 120 wppm carbon (C), the balance essentially iron (Fe) and incidental elements and impurities, characterized in that the alloy has predominantly lath martensite microstructure essentially without topologically close packed intermetallic phases and strengthened primarily by a dispersion of intermetallic particles primarily of the eta-Ni3Ti phase and wherein the titanium and carbon (Ti) and (C) levels are controlled such that C can be dissolved during a homogenization step and subsequently precipitated during forging to provide a grain-pinnning dispersion.
    • 表现出强度,韧性和耐腐蚀性的组合的沉淀硬化的不锈钢马氏体时效钢包含约8〜15%的铬(Cr),2〜15%的钴(Co),7〜14%的镍(Ni) ,高达约0.7%的铝(Al),小于约0.4%的铜(Cu),0.5至2.6%的钼(Mo),0.4至小于约0.75%的钛(Ti),至多约0.5%的钨 W)和高达约120wppm的碳(C),余量基本上是铁(Fe)和附带的元素和杂质,其特征在于该合金主要具有板条马氏体组织,基本上没有拓扑密实的金属间相,并且主要由分散体 主要由eta-Ni3Ti相组成的金属间化合物颗粒,其中控制钛和碳(Ti)和(C)的含量,使C在均匀化步骤中可以溶解,随后在锻造期间沉淀,从而提供颗粒沉淀分散体。
    • 2. 发明申请
    • Martensitic Stainless Steel Strengthened By Ni3tin-Phase Precipitation
    • 通过Ni3tin相析出强化马氏体不锈钢
    • US20080314480A1
    • 2008-12-25
    • US11814780
    • 2006-01-25
    • James WrightJin-Won Jung
    • James WrightJin-Won Jung
    • C22C38/52
    • C22C38/004C21D6/004C21D6/007C21D2211/008C22C38/06C22C38/44C22C38/50C22C38/52
    • A precipitation-hardened stainless maraging steel which exhibits a combination of strength, toughness, and corrosion resistance comprises by weight about: 8 to 15% chromium (Cr), 2 to 15% cobalt (Co), 7 to 14% nickel (Ni), and up to about 0.7% aluminum (Al), less than about 0.4% copper (Cu), 0.5% to 2.5% molybdenum (Mo), 0.4 to 0.75% titanium (Ti), up to about 0.5% tungsten (W), and up to about 120 wppm carbon (C), the balance essentially iron (Fe) and incidental elements and impurities, characterized in that the alloy has a predominantly lath martensite microstructure essentially without topologically close packed intermetallic phases and strengthened primarily by a dispersion of intermetallic particles primarily of the eta-Ni3Ti phase and wherein the titanium and carbon (Ti) and (C) levels are controlled such that C can be dissolved during a homogenization step and subsequently precipitated during forging to provide a grain-pinning dispersion.
    • 表现出强度,韧性和耐腐蚀性的组合的沉淀硬化的不锈钢马氏体时效钢包含约8〜15%的铬(Cr),2〜15%的钴(Co),7〜14%的镍(Ni) ,高达约0.7%的铝(Al),小于约0.4%的铜(Cu),0.5%至2.5%的钼(Mo),0.4至0.75%的钛(Ti),至多约0.5%的钨(W) ,和高达约120wppm的碳(C),余量基本上为铁(Fe)和附带元素和杂质,其特征在于该合金主要具有板条马氏体组织,基本上没有拓扑密实的金属间相,并主要通过 主要是eta-Ni3Ti相的金属间化合物颗粒,其中控制钛和碳(Ti)和(C)水平,使得C在均匀化步骤期间可以溶解,随后在锻造期间沉淀以提供颗粒钉扎分散体。