Radiation resistant austenitic stainless steel alloys
    1.
    发明授权
    Radiation resistant austenitic stainless steel alloys 失效
    耐辐射奥氏体不锈钢合金

    公开(公告)号:US4818485A

    公开(公告)日:1989-04-04

    申请号:US13471

    申请日:1987-02-11

    摘要: An austenitic stainless steel alloy, with improved resistance to radiation-induced swelling and helium embrittlement, and improved resistance to thermal creep at high temperatures, consisting essentially of, by weight percent: from 16 to 18% nickel; from 13 to 17% chromium; from 2 to 3% molybdenum; from 1.5 to 2.5% manganese; from 0.01 to 0.5% silicon; from 0.2 to 0.4% titanium; from 0.1 to 0.2% niobium; from 0.1 to 0.6% vanadium; from 0.06 to 0.12% carbon; from 0.01% to 0.03% nitrogen; from 0.03 to 0.08% phosphorus; from 0.005 to 0.01% boron; and the balance iron, and wherein the alloy may be thermomechanically treated to enhance physical and mechanical properties.

    摘要翻译: 奥氏体不锈钢合金具有改善的耐辐照诱发的膨胀和氦脆化性能,以及耐高温蠕变性能的改善,主要由重量百分比组成:16至18%的镍; 13至17%铬; 2〜3%的钼; 1.5〜2.5%锰; 0.01〜0.5%的硅; 0.2〜0.4%的钛; 0.1〜0.2%的铌; 0.1至0.6%的钒; 0.06〜0.12%的碳; 0.01%至0.03%氮气; 0.03〜0.08%的磷; 0.005〜0.01%的硼; 和余量铁,并且其中所述合金可以被热机械处理以增强物理和机械性能。

    Nano-scale nitride-particle-strengthened high-temperature wrought ferritic and martensitic steels
    3.
    发明授权
    Nano-scale nitride-particle-strengthened high-temperature wrought ferritic and martensitic steels 失效
    纳米级氮化物颗粒强化高温锻造铁素体和马氏体钢

    公开(公告)号:US07520942B2

    公开(公告)日:2009-04-21

    申请号:US10947119

    申请日:2004-09-22

    IPC分类号: C22C38/24 C22C38/46

    摘要: A method of making a steel composition includes the steps of: a. providing a steel composition that includes up to 15% Cr, up to 3% Mo, up to 4% W, 0.05-1% V, up to 2% Si, up to 3% Mn, up to 10% Co, up to 3% Cu, up to 5% Ni, up to 0.3% C, 0.02-0.3% N, balance iron, wherein the percentages are by total weight of the composition; b. austenitizing the composition at a temperature in the range of 1000° C. to 1400° C.; c. cooling the composition of steel to a selected hot-working temperature in the range 500° C. to 1000° C.; d. hot-working the composition at the selected hot-working temperature; e. annealing the composition for a time period of up to 10 hours at a temperature in the range of 500° C. to 1000° C.; and f. cooling the composition to ambient temperature to transform the steel composition to martensite, bainite, ferrite, or a combination of those microstructures.

    摘要翻译: 制造钢组合物的方法包括以下步骤:a。 提供钢组合物,其包含高达15%的Cr,高达3%的Mo,高达4%的W,0.05-1%的V,高达2%的Si,至多3%的Mn,高达10%的Co,直到 3%Cu,至多5%Ni,至多0.3%C,0.02-0.3%N,余量铁,其中百分比为组合物总重量; b。 在1000℃至1400℃的温度下奥氏体化组合物; C。 将钢的组成冷却至500℃至1000℃范围内的选定热工作温度。 d。 在选定的热工作温度下热处理组合物; e。 在500℃至1000℃的温度下将组合物退火长达10小时的时间段; 和f。 将组合物冷却至环境温度以将钢组合物转化为马氏体,贝氏体,铁素体或这些微结构的组合。

    High temperature creep resistant austenitic alloy
    5.
    发明授权
    High temperature creep resistant austenitic alloy 失效
    耐高温蠕变奥氏体合金

    公开(公告)号:US4849169A

    公开(公告)日:1989-07-18

    申请号:US193705

    申请日:1988-05-13

    IPC分类号: C22C30/00

    CPC分类号: C22C30/00

    摘要: An improved austenitic alloy having in wt % 19-21 Cr, 30-35 Ni, 1.5-2.5 Mn, 2-3 Mo, 0.1-0.4 Si, 0.3-0.5 Ti, 0.1-0.3 Nb, 0.1-0.5 V, 0.001-0.005 P, 0.08-0.12 C, 0.01-0.03 N, 0.005-0.01 B and the balance iron that is further improved by annealing for up to 1 hour at 1150.degree.-1200.degree. C. and then cold deforming 5-15 %. The alloy exhibits dramatically improved creep rupture resistance and ductility at 700.degree. C.

    摘要翻译: 一种改进的奥氏体合金,其重量百分比为19-21Cr,30-35Ni,1.5-2.5Mn,2-3Mo,0.1-0.4Si,0.3-0.5Ti,0.1-0.3Nb,0.1-0.5V,0.001- 0.005 P,0.08-0.12 C,0.01-0.03 N,0.005-0.01 B,剩余铁通过在1150°-1200℃下退火长达1小时进一步提高,然后冷变形5-15%。 该合金在700℃下显示出显着改善的抗蠕变断裂性和延展性。

    Heat and corrosion resistant cast CN-12 type stainless steel with improved high temperature strength and ductility
    6.
    发明授权
    Heat and corrosion resistant cast CN-12 type stainless steel with improved high temperature strength and ductility 有权
    耐腐蚀耐腐蚀CN-12型不锈钢,具有改善的高温强度和延展性

    公开(公告)号:US07255755B2

    公开(公告)日:2007-08-14

    申请号:US10195703

    申请日:2002-07-15

    IPC分类号: C22C38/58

    摘要: A cast stainless steel alloy and articles formed therefrom containing about 0.5 wt. % to about 10 wt. % manganese, 0.02 wt. % to 0.50 wt. % N, and less than 0.15 wt. % sulfur provides high temperature strength both in the matrix and at the grain boundaries without reducing ductility due to cracking along boundaries with continuous or nearly-continuous carbides. Alloys of the present invention also have increased nitrogen solubility thereby enhancing strength at all temperatures because nitride precipitates or nitrogen porosity during casting are not observed. The solubility of nitrogen is dramatically enhanced by the presence of manganese, which also retains or improves the solubility of carbon thereby providing additional solid solution strengthening due to the presence of manganese and nitrogen, and combined carbon. Such solution strengthening enhances the high temperature precipitation-strengthening benefits of fine dispersions of NbC. Such solid solution effects also enhance the stability of the austenite matrix from resistance to excess sigma phase or chrome carbide formation at higher service temperatures. The presence of sulfides is substantially eliminated.

    摘要翻译: 铸造的不锈钢合金和由其形成的制品含有约0.5wt。 %至约10wt。 %锰,0.02重量% %至0.50重量% %N,小于0.15wt。 %硫在基体和晶界处均提供高温强度,而不会因连续或几乎连续的碳化物沿边界开裂而降低延展性。 本发明的合金还具有增加的氮溶解度,从而在所有温度下增强强度,因为没有观察到铸造期间的氮化物沉淀或氮气孔隙。 由于锰的存在,氮的溶解度显着提高,这也保留或提高了碳的溶解度,从而由于锰和氮以及组合碳的存在而提供额外的固溶强化。 这种溶液强化提高了NbC细分散体的高温析出强化效果。 这种固溶效应还提高了奥氏体基体在较高使用温度下从耐过剩σ相或碳化铬形成的稳定性。 基本上消除了硫化物的存在。

    Cr-W-V bainitic/ferritic steel with improved strength and toughness and
method of making
    7.
    发明授权
    Cr-W-V bainitic/ferritic steel with improved strength and toughness and method of making 失效
    具有改善强度和韧性的Cr-W-V贝氏体/铁素体钢和制造方法

    公开(公告)号:US5292384A

    公开(公告)日:1994-03-08

    申请号:US914452

    申请日:1992-07-17

    IPC分类号: C21D1/18 C21D6/00 C22C38/22

    摘要: A high strength, high toughness Cr-W-V ferritic steel composition suitable for fast induced-radioactivity (FIRD) decay after irradiation in a fusion reactor comprises 2.5-3.5 wt % Cr, 2.This invention was made with Government support under contract DE-AC05-840R21400 awarded by the U.S. Department of Energy to Martin Marietta Energy Systems, Inc. and the Government has certain rights in this invention.

    摘要翻译: 在聚变反应器中照射后适用于快速诱导放射性(FIRD)衰变的高强度,高韧性Cr-WV铁素体钢组合物包含2.5-3.5重量%的Cr,2.0-3.5重量%的钨,0.10-0.30重量%的V和 0.1-0.15重量%C.用于FIRD核聚变的铁素体钢,耐热结构应用还可以含有少量的合金元素,包括0.003-0.009重量%B,0.05-0.15重量%的Ta和0-0.2重量%的Ti。 用于核裂变和用于非核,耐热应用的铁素体钢除了上述合金元素之外,还可以包括0-0.5重量%的Mo和0.05-0.25重量%的Nb。 该合金通过奥氏体化和归一化或淬火,然后是低温回火制备。

    Heat and corrosion resistant cast CF8C stainless steel with improved high temperature strength and ductility
    9.
    再颁专利
    Heat and corrosion resistant cast CF8C stainless steel with improved high temperature strength and ductility 有权
    耐热耐腐蚀铸造CF8C不锈钢,具有改善的高温强度和延展性

    公开(公告)号:USRE41504E1

    公开(公告)日:2010-08-17

    申请号:US12230179

    申请日:2008-08-25

    IPC分类号: C22C38/58

    摘要: A CF8C type stainless steel alloy and articles formed therefrom containing about 18.0 weight percent to about 22.0 weight percent chromium and 11.0 weight percent to about 14.0 weight percent nickel; from about 0.05 weight percent to about 0.15 weight percent carbon; from about 2.0 weight percent to about 10.0 weight percent manganese; and from about 0.3 weight percent to about 1.5 weight percent niobium. The present alloys further include less than 0.15 weight percent sulfur which provides high temperature strength both in the matrix and at the grain boundaries without reducing ductility due to cracking along boundaries with continuous or nearly-continuous carbides. The disclosed alloys also have increased nitrogen solubility thereby enhancing strength at all temperatures because nitride precipitates or nitrogen porosity during casting are not observed. The solubility of nitrogen is dramatically enhanced by the presence of manganese, which also retains or improves the solubility of carbon thereby providing additional solid solution strengthening due to the presence of manganese and nitrogen, and combined carbon.

    摘要翻译: CF8C型不锈钢合金和由其形成的制品含有约18.0重量%至约22.0重量%的铬和11.0重量%至约14.0重量%的镍; 约0.05重量%至约0.15重量%的碳; 约2.0重量%至约10.0重量%的锰; 和约0.3重量%至约1.5重量%的铌。 本发明的合金还包括小于0.15重量%的硫,其在基体和晶界处都提供高温强度,而不会由于沿连续或几乎连续的碳化物的边界开裂而降低延展性。 所公开的合金还具有增加的氮溶解度,从而在所有温度下增强强度,因为未观察到铸造期间的氮化物沉淀或氮气孔隙。 由于锰的存在,氮的溶解度显着提高,这也保留或提高了碳的溶解度,从而由于锰和氮以及组合碳的存在而提供额外的固溶强化。