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    Extrusion die for extruding metallic powder material
    11.
    发明授权
    Extrusion die for extruding metallic powder material 失效
    用于挤出金属粉末材料的挤出模具

    公开(公告)号：US4601650A

    公开(公告)日：1986-07-22

    申请号：US729744

    申请日：1985-05-02

    申请人： Michael J. Luton

    发明人： Michael J. Luton

    IPC分类号： B22F3/20 ,  B30B11/22 ,  C22C32/00 ,  B22F3/18

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

    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 passes 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具时基本上恒定的自然应变率。

    Method for producing ultra-high strength, weldable steels with superior toughness
    13.
    发明授权
    Method for producing ultra-high strength, weldable steels with superior toughness 失效
    具有优异韧性的超高强度，可焊接钢的生产方法

    公开(公告)号：US06248191B1

    公开(公告)日：2001-06-19

    申请号：US09123858

    申请日：1998-07-28

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

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

    IPC分类号： C21D800

    CPC分类号： C21D6/005 ,  C21D1/19 ,  C21D8/0226 ,  C21D2211/002 ,  C21D2211/008

    摘要： A method is provided for producing an ultra-high strength 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. A steel slab is heated to a suitable temperature; the slab is reduced to form plate in one or more hot rolling passes in a first temperature range in which austenite recrystallizes; said plate is further reduced 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; said plate is quenched to a suitable Quench Stop Temperature; and said quenching is stopped and said plate is allowed to air cool to ambient temperature.

    摘要翻译： 提供一种制造抗拉强度为至少约900MPa（130ksi）的超高强度钢，-40℃下通过夏比V-缺口冲击试验测得的韧性的方法（-40°F） ）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主要由细晶粒的下贝氏体，细粒状板条马氏体或其混合物组成的微结构， 添加剂：碳，硅，锰，铜，镍，铌，钒，钼，铬，钛，​​铝，钙，稀土金属和镁。 将钢坯加热到合适的温度; 在奥氏体再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; 所述板在一个或多个热轧道中在低于所述第一温度范围和高于在冷却期间奥氏体开始转变为铁素体的温度的温度范围内进一步减小; 所述板淬火至合适的淬火停止温度; 并且停止淬火，并使所述板空气冷却至环境温度。

    High-tensile-strength steel and method of manufacturing the same
    14.
    发明授权
    High-tensile-strength steel and method of manufacturing the same 有权
    高强度钢及其制造方法

    公开(公告)号：US06245290B1

    公开(公告)日：2001-06-12

    申请号：US09380254

    申请日：1999-08-25

    申请人： Jayoung Koo ,  Narasimha-Rao V. Bangaru ,  Michael J. Luton ,  Clifford W. Petersen ,  Kazuki Fujiwara ,  Shuji Okaguchi ,  Masahiko Hamada ,  Yu-ichi Komizo

    发明人： Jayoung Koo ,  Narasimha-Rao V. Bangaru ,  Michael J. Luton ,  Clifford W. Petersen ,  Kazuki Fujiwara ,  Shuji Okaguchi ,  Masahiko Hamada ,  Yu-ichi Komizo

    IPC分类号： C21D800

    CPC分类号： C22C38/02 ,  C21D8/0226 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58

    摘要： A high-tensile-strength steel having excellent toughness throughout its thickness, excellent properties at welded joints, and a tensile strength (TS) of at least about 900 MPa (130 ksi), and a method for making such steel, are provided. Steels according to this invention preferably have the following composition based on % by weight: carbon (C): 0.02% to 0.1%; silicon (Si): not greater than 0.6%; manganese (Mn): 0.2% to 2.5%; nickel (Ni): 0.2% to 1.2%; niobium (Nb): 0.01% to 0.1%; titanium (Ti): 0.005% to 0.03%; aluminum (Al): not greater than 0.1%; nitrogen (N): 0.001% to 0.006%; copper (Cu): 0% to 0.6%; chromium (Cr): 0% to 0.8%; molybdenum (Mo): 0% to 0.6%; vanadium (V): 0% to 0.1%; boron (B): 0% to 0.0025%; and calcium (Ca): 0% to 0.006%. The value of Vs as defined by Vs=C+(Mn/5)+5P−(Ni/10)−(Mo/15)+(Cu/10) is 0.15 to 0.42. P and S among impurities are contained in an amount of not greater than 0.015% and not greater than 0.003%, respectively. The carbide size in the steel is not greater than 5 microns in the longitudinal direction.

    摘要翻译： 提供了其整个厚度具有优异的韧性，在焊接接头处具有优异性能以及至少约900MPa（130ksi）的拉伸强度（TS））的高强度钢及其制造方法。 根据本发明的钢优选具有以重量％计的以下组成：碳（C）：0.02％至0.1％; 硅（Si）：不大于0.6％; 锰（Mn）：0.2〜2.5％ 镍（Ni）：0.2〜1.2％ 铌（Nb）：0.01〜0.1％ 钛（Ti）：0.005〜0.03％ 铝（Al）：不大于0.1％; 氮（N）：0.001〜0.006％ 铜（Cu）：0〜0.6％ 铬（Cr）：0〜0.8％ 钼（Mo）：0〜0.6％ 钒（V）：0％至0.1％; 硼（B）：0〜0.0025％ 和钙（Ca）：0〜0.006％。 由Vs = C +（Mn / 5）+ 5P-（Ni / 10） - （Mo / 15）+（Cu / 10）定义的Vs的值为0.15〜0.42。 杂质中的P和S的含量分别不大于0.015％且不大于0.003％。 钢中的碳化物尺寸在纵向上不大于5微米。

    Ultra-high strength, weldable, boron-containing steels with superior toughness
    15.
    发明授权
    Ultra-high strength, weldable, boron-containing steels with superior toughness 失效
    超高强度，可焊接，具有优异韧性的含硼钢

    公开(公告)号：US06228183B1

    公开(公告)日：2001-05-08

    申请号：US09123791

    申请日：1998-07-28

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

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

    IPC分类号： C22C3814

    CPC分类号： C22C38/06 ,  C21D1/19 ,  C21D8/00 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14

    摘要： An ultra-high strength boron-containing 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含硼钢，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微观结构：碳 通过将钢坯加热到合适的温度来制备硅，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。