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    Method of extruding aluminum-base oxide dispersion strengthened
    1.
    发明授权
    Method of extruding aluminum-base oxide dispersion strengthened 失效
    挤压铝基氧化物分散体的方法得到加强

    公开(公告)号：US4818481A

    公开(公告)日：1989-04-04

    申请号：US23851

    申请日：1987-03-09

    申请人： Michael J. Luton ,  Raghavan Ayer ,  Ruzica Petkovic-Luton ,  Joseph Vallone ,  Stephen Matras

    发明人： Michael J. Luton ,  Raghavan Ayer ,  Ruzica Petkovic-Luton ,  Joseph Vallone ,  Stephen Matras

    IPC分类号： B22F3/20 ,  C22C32/00 ,  B22F1/00

    CPC分类号： B22F3/20 ,  C22C32/0036

    摘要： Disclosed is a method for extruding fine grain aluminum mechanically alloyed powder material such that the resulting extruded product is substantially free of texture, which method comprises extruding a billet of the powder material having a mean grain size less than about 5 microns through a die having an internal contour which conforms substantially to the formula: ##EQU1## where R is the radius of the die contour at any given point x along the major axis of the die orifice from its entry plane, R.sub.o is the radius of the billet, and K is an arbitrary constant.

    摘要翻译： 公开了一种用于挤出细晶粒铝机械合金化粉末材料的方法，使得所得挤出产品基本上不含质地，该方法包括通过具有小于约5微米的模具挤出平均粒度小于约5微米的粉末材料坯料， 内部轮廓基本符合以下公式：其中R是沿着模孔从其入口平面的长轴在任何给定点x处的模具轮廓的半径，Ro是坯料的半径，K是 任意常数。

    Ultra-high strength, weldable steels with excellent ultra-low temperature toughness
    4.
    发明授权
    Ultra-high strength, weldable steels with excellent ultra-low temperature toughness 失效
    超高强度，可焊接的钢，具有优异的超低温韧性

    公开(公告)号：US06264760B1

    公开(公告)日：2001-07-24

    申请号：US09123625

    申请日：1998-07-28

    申请人： Hiroshi Tamehiro ,  Hitoshi Asahi ,  Takuya Hara ,  Yoshio Terada ,  Michael J. Luton ,  Jayoung Koo ,  Narasimha-Rao V. Bangaru ,  Clifford W. Petersen

    发明人： Hiroshi Tamehiro ,  Hitoshi Asahi ,  Takuya Hara ,  Yoshio Terada ,  Michael J. Luton ,  Jayoung Koo ,  Narasimha-Rao V. Bangaru ,  Clifford W. Petersen

    IPC分类号： C22C3808

    CPC分类号： C21D8/0226 ,  C21D1/19 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14

    摘要： An ultra-high strength steel having excellent ultra-low temperature toughness, a tensile strength of at least about 930 MPa (135 ksi), and a microstructure comprising predominantly fine-grained lower bainite, fine-grained lath martensite, or mixtures thereof, transformed from substantially unrecrystallized austenite grains and comprising iron and specified weight percentages of the additives: carbon, silicon, manganese, copper, nickel, niobium, vanadium, molybdenum, chromium, titanium, aluminum, calcium, Rare Earth Metals, and magnesium, is prepared by heating a steel slab to a suitable temperature; reducing the slab to form plate in one or more hot rolling passes in a first temperature range in which austenite recrystallizes; further reducing said plate in one or more hot rolling passes in a second temperature range below said first temperature range and above the temperature at which austenite begins to transform to ferrite during cooling; quenching said plate to a suitable Quench Stop Temperature; and stopping said quenching and allowing said plate to air cool to ambient temperature.

    摘要翻译： 具有优异的超低温韧性，至少约930MPa（135ksi）的拉伸强度和主要包含细粒度的下贝氏体，细粒状板条马氏体或其混合物的微观结构的超高强度钢被转化 来自基本上未再结晶的奥氏体晶粒并且包含铁和指定重量百分比的添加剂：碳，硅，锰，铜，镍，铌，钒，钼，铬，钛，​​铝，钙，稀土金属和镁，由 将钢板加热到合适的温度; 在奥氏体重结晶的第一温度范围内，在一个或多个热轧道中将板坯还原成板; 在低于所述第一温度范围的第二温度范围内并且高于在冷却期间奥氏体开始转变为铁素体的温度的一个或多个热轧道中进一步减少所述板; 将所述板淬火至合适的淬火停止温度; 并停止所述淬火并允许所述板空气冷却至环境温度。

    Ultra-high strength, weldable, essentially boron-free steels with superior toughness
    6.
    发明授权
    Ultra-high strength, weldable, essentially boron-free steels with superior toughness 失效
    超高强度，可焊接，基本上无硼钢，韧性优越

    公开(公告)号：US06224689B1

    公开(公告)日：2001-05-01

    申请号：US09123859

    申请日：1998-07-28

    申请人： Jayoung Koo ,  Michael J. Luton ,  Narasimha-Rao V. Bangaru ,  Clifford W. Petersen ,  Hiroshi Tamehiro ,  Hitoshi Asahi ,  Takuya Hara ,  Yoshio Terada

    发明人： Jayoung Koo ,  Michael J. Luton ,  Narasimha-Rao V. Bangaru ,  Clifford W. Petersen ,  Hiroshi Tamehiro ,  Hitoshi Asahi ,  Takuya Hara ,  Yoshio Terada

    IPC分类号： C22C3812

    CPC分类号： C22C38/08 ,  C21D1/19 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14

    摘要： An ultra-high strength essentially boron-free steel having a tensile strength of at least about 900 MPa (130 ksi), a toughness as measured by Charpy V-notch impact test at −40° C. (−40° F.) of at least about 120 joules (90 ft-lbs), and a microstructure comprising predominantly fine-grained lower bainite, fine-grained lath martensite, or mixtures thereof, transformed from substantially unrecrystallized austenite grains and comprising iron and specified weight percentages of the additives: carbon, silicon, manganese, copper, nickel, niobium, vanadium, molybdenum, chromium, titanium, aluminum, calcium, Rare Earth Metals, and magnesium, is prepared by heating a steel slab to a suitable temperature; reducing the slab to form plate in one or more hot rolling passes in a first temperature range in which austenite recrystallizes; further reducing said plate in one or more hot rolling passes in a second temperature range below said first temperature range and above the temperature at which austenite begins to transform to ferrite during cooling; quenching said plate to a suitable Quench Stop Temperature; and stopping said quenching and allowing said plate to air cool to ambient temperature.

    摘要翻译： 具有至少约900MPa（130ksi）拉伸强度的超高强度基本上不含硼的钢，在-40℃（-40°F）下通过夏比V-缺口冲击试验测得的韧性 至少约120焦耳（90ft-lbs），以及由基本上未再结晶的奥氏体晶粒转化并且包含铁和特定重量百分比的添加剂的主要包含细粒度的下贝氏体，细粒状板条马氏体或其混合物的显微组织： 通过将钢坯加热到合适的温度来制备碳，硅，锰，铜，镍，铌，钒，钼，铬，钛，​​铝，钙，稀土金属和镁。 在奥氏体重结晶的第一温度范围内，在一个或多个热轧道中将板坯还原成板; 在低于所述第一温度范围的第二温度范围内并且高于在冷却期间奥氏体开始转变为铁素体的温度的一个或多个热轧道中进一步减少所述板; 将所述板淬火至合适的淬火停止温度; 并停止所述淬火并允许所述板空气冷却至环境温度。

    Dispersion strengthened extruded metal products substantially free of texture
    8.
    发明授权
    Dispersion strengthened extruded metal products substantially free of texture 失效
    分散强化挤压金属制品基本上没有纹理

    公开(公告)号：US4599214A

    公开(公告)日：1986-07-08

    申请号：US524028

    申请日：1983-08-17

    申请人： Michael J. Luton

    发明人： Michael J. Luton

    IPC分类号： C22C1/05 ,  B21C23/01 ,  B21C25/02 ,  B22F3/20 ,  B30B11/22 ,  C22C32/00 ,  C22C19/00

    CPC分类号： B30B11/221 ,  B22F3/20 ,  C22C32/0015

    摘要： Disclosed are extruded dispersion strengthened metallic materials which are substantially free of texture as well as a method for producing such materials. The method comprises extruding a billet of dispersion strengthened metallic powder material comprised of one or more metals and one or more refractory compounds said powder material having a mean grain size less than about 5 microns and whose grain size is substantially stable at the extrusion conditions, through a die having an internal contour such that the material is subjected to a natural strain rate which is substantially constant as it pass through the die.

    摘要翻译： 公开了基本上不含质地的挤出分散强化金属材料以及这种材料的制造方法。 该方法包括挤出由一种或多种金属组成的分散强化金属粉末材料坯料和一种或多种难熔化合物，所述粉末材料具有小于约5微米的平均粒度，其粒度在挤出条件下基本上是稳定的，通过 具有内部轮廓的模具，使得材料经受其通过模头时基本上恒定的自然应变速率。

    Method of manufacturing hot formed high strength steel
    9.
    发明授权
    Method of manufacturing hot formed high strength steel 有权
    热成型高强度钢的制造方法

    公开(公告)号：US07048810B2

    公开(公告)日：2006-05-23

    申请号：US10253129

    申请日：2002-09-24

    申请人： Clifford W. Petersen ,  Jayoung Koo ,  Narasimha-Rao V. Bangaru ,  Michael J. Luton

    发明人： Clifford W. Petersen ,  Jayoung Koo ,  Narasimha-Rao V. Bangaru ,  Michael J. Luton

    IPC分类号： C12D8/10

    CPC分类号： C21D1/02 ,  C21D7/13 ,  C21D8/00 ,  C21D2211/002 ,  C21D2211/008 ,  Y10S148/909

    摘要： A method for processing a hot formed, high-tensile-strength steel having an ultimate tensile strength (UTS) of at least about 730 MPa (105 ksi) and excellent toughness to retain essentially all the strength and toughness is provided. This processing is needed for the fabrication of high strength fittings that are used in the construction of linepipe for transport of natural gas, crude oil, as well as other applications. Furthermore, the hot formed high strength steel may be weldable with a Pcm of less than or equal to 0.35.

    摘要翻译： 提供了一种用于处理具有至少约730MPa（105ksi）的极限拉伸强度（UTS）和优异韧性以保持基本上所有强度和韧性的热成型的高拉伸强度钢的方法。 这种加工是制造用于天然气，原油以及其他应用的运输管线管道中使用的高强度配件所必需的。 此外，热成型的高强度钢可以以小于或等于0.35的Pcm可焊接。