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51. 发明授权

US4067756A High strength, high ductility low carbon steel 失效
标题翻译：高强度，高延展性低碳钢
公开(公告)号：US4067756A
公开(公告)日：1978-01-10
申请号：US737753
申请日：1976-11-02
申请人： Jayoung Koo , Gareth Thomas
发明人： Jayoung Koo , Gareth Thomas
IPC分类号： C21D1/18 , C21D1/78 , C22C38/02
CPC分类号： C21D1/185
摘要： A high strength, high ductility low carbon steel consisting essentially of iron, 0.05-0.15 wt% carbon, and 1-3 wt% silicon. Minor amounts of other constituents may be present. The steel is characterized by a duplex ferrite-martensite microstructure in a fibrous morphology. The microstructure is developed by heat treatment consisting of initial austenitizing treatment followed by annealing in the (.alpha. + .gamma.) range with intermediate quenching.
摘要翻译：高强度，高延展性的低碳钢，主要由铁，0.05-0.15重量％的碳和1-3重量％的硅组成。可能存在少量其他成分。钢的特征在于纤维形态中的双相铁素体 - 马氏体组织。通过由初始奥氏体化处理组成的微观结构，随后在（α+γ）范围内进行中间淬火退火。

52. 发明授权

US07063752B2 Grain refinement of alloys using magnetic field processing 失效
公开(公告)号：US07063752B2
公开(公告)日：2006-06-20
申请号：US10314620
申请日：2002-12-09
申请人： Jayoung Koo , Shiun Ling , Michael John Luton , Hans Thomann , Narasimha-Rao Venkata Bangaru
发明人： Jayoung Koo , Shiun Ling , Michael John Luton , Hans Thomann , Narasimha-Rao Venkata Bangaru
IPC分类号： H01F1/04 , H01F1/14 , C21D1/04
CPC分类号： C21D1/04 , C21D10/00 , C21D2201/00 , C22C38/04 , C22C38/08 , C22C38/105 , C22F3/00
摘要： A method for refining the grain size of alloys which undergo ferromagnetic to paramagnetic phase transformation and an alloy produced therefrom. By subjecting the alloy to a timed application of a strong magnetic field, the temperature of phase boundaries can be shifted enabling phase transformations at lower temperatures.

53. 发明申请

US20060016517A1 Grain refinement of alloys using magnetic field processing 审中-公开
公开(公告)号：US20060016517A1
公开(公告)日：2006-01-26
申请号：US11223191
申请日：2005-09-09
申请人： Jayoung Koo , Shiun Ling , Michael Luton , Hans Thomann , Narasimha-Rao Bangaru
发明人： Jayoung Koo , Shiun Ling , Michael Luton , Hans Thomann , Narasimha-Rao Bangaru
IPC分类号： C21D1/04
CPC分类号： C21D1/04 , C21D10/00 , C21D2201/00 , C22C38/04 , C22C38/08 , C22C38/105 , C22F3/00
摘要： A method for refining the grain size of alloys which undergo ferromagnetic to paramagnetic phase transformation and an alloy produced therefrom. By subjecting the alloy to a timed application of a strong magnetic field, the temperature of phase boundaries can be shifted enabling phase transformations at lower temperatures.

54. 发明授权

US06264760B1 Ultra-high strength, weldable steels with excellent ultra-low temperature toughness 失效
标题翻译：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。

55. 发明授权

US06251198B1 Ultra-high strength ausaged steels with excellent cryogenic temperature toughness 失效
标题翻译：超高强度优质钢，具有优异的低温韧性
公开(公告)号：US06251198B1
公开(公告)日：2001-06-26
申请号：US09099153
申请日：1998-06-18
申请人： Jayoung Koo , Narasimha-Rao V. Bangaru , Glen A. Vaughn
发明人： Jayoung Koo , Narasimha-Rao V. Bangaru , Glen A. Vaughn
IPC分类号： C22C3808
CPC分类号： C21D6/001 , C21D1/19 , C21D1/20 , C21D8/0226 , C21D2211/001 , C21D2211/002 , C21D2211/008 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16
摘要： An ultra-high strength, weldable, low alloy steel with excellent cryogenic temperature toughness in the base plate and in the heat affected zone (HAZE) when welded, having a tensile strength greater than 830 MAP (120 KS) and a micro-laminate microstructure comprising austenite film layers and fine-grained marten site/lower bainite laths, is prepared by heating a steel slab comprising iron and specified weight percentages of some or all of the additives carbon, manganese, nickel, nitrogen, copper, chromium, molybdenum, silicon, niobium, vanadium, titanium, aluminum, and boron; reducing the slab to form plate in one or more passes in a temperature range in which austenite recrystallizes; finish rolling the plate in one or more passes in a temperature range below the austenite recrystallization temperature and above the Ar3 transformation temperature; quenching the finish rolled plate to a suitable Quench Stop Temperature (QST); stopping the quenching; and either, for a period of time, holding the plate substantially isothermally at the QST or slow-cooling the plate before air cooling, or simply air cooling the plate to ambient temperature.
摘要翻译：一种超高强度，可焊接的低合金钢，其在焊接时在底板和热影响区（HAZE）中具有优异的低温韧性，具有大于830MAC（120KS）的拉伸强度和微层压结构包括奥氏体膜层和细粒度马氏体/下贝氏体板条，通过加热包括铁的钢板和指定重量百分比的一些或所有添加剂碳，锰，镍，氮，铜，铬，钼，硅铌，钒，钛，铝和硼; 在奥氏体重结晶的温度范围内，在一次或多次通过时，将板坯还原成板; 在低于奥氏体再结晶温度且高于Ar3转变温度的温度范围内，在一个或多个道次中对板进行精轧; 将精轧板淬火至合适的淬火停止温度（QST）; 停止淬火并且在一段时间内，在空气冷却之前将板保持基本上等温，或者在空气冷却之前缓慢冷却板，或者简单地将板空气冷却至环境温度。

56. 发明授权

US5653826A High strength dual phase steel plate with superior toughness and weldability 失效
标题翻译：高强度双相钢板，具有优异的韧性和可焊性
公开(公告)号：US5653826A
公开(公告)日：1997-08-05
申请号：US477008
申请日：1995-06-07
申请人： Jayoung Koo , Michael John Luton
发明人： Jayoung Koo , Michael John Luton
IPC分类号： C21D6/02 , C21D7/12 , C21D8/02 , C21D8/10 , C22C38/00 , C22C38/04 , C22C38/12 , C22C38/14 , B32B15/18
CPC分类号： C22C38/14 , C21D6/02 , C21D8/0226 , C22C38/04 , C22C38/12 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D7/12 , C21D8/10
摘要： A high strength steel composition comprising ferrite and martensite/banite phases, the ferrite phase having primarily vanadium and mobium carbide or carbonitride precipitates, is prepared by a first rolling above the austenite recrystallization temperature; a second rolling below the anstenite recrystallization temperature; a third rolling between the Ar.sub.3 and Ar.sub.1 transformation points, and water cooling to below about 400.degree. C.
摘要翻译：通过在奥氏体再结晶温度以上进行第一次轧制，制备了包含铁素体和马氏体/银相的高强度钢组合物，主要为钒和碳化铁或碳氮化物析出物的铁素体相; 第二次在低钙钛矿再结晶温度以下滚动; Ar3和Ar1相变点之间的第三次滚动，水冷至低于约400℃。

57. 发明授权

US06224689B1 Ultra-high strength, weldable, essentially boron-free steels with superior toughness 失效
标题翻译：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。

58. 发明授权

US5545270A Method of producing high strength dual phase steel plate with superior toughness and weldability 失效
标题翻译：具有优异韧性和焊接性能的高强度双相钢板的制造方法
公开(公告)号：US5545270A
公开(公告)日：1996-08-13
申请号：US349860
申请日：1994-12-06
申请人： Jayoung Koo , Michael J. Luton
发明人： Jayoung Koo , Michael J. Luton
IPC分类号： C21D6/02 , C21D7/12 , C21D8/02 , C21D8/10 , C22C38/00 , C22C38/04 , C22C38/12 , C22C38/14
CPC分类号： C22C38/14 , C21D6/02 , C21D8/0226 , C22C38/04 , C22C38/12 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D7/12 , C21D8/10
摘要： A high strength steel composition comprising ferrite and martensite/banite phases, the ferrite phase having primarily vanadium and mobium carbide or carbonitride precipitates, is prepared by a first rolling above the austenite recrystallization temperature; a second rolling below the anstenite recrystallization temperature; a third rolling between the Ar.sub.3 and Ar.sub.1 transformation points, and water cooling to below about 400.degree. C.
摘要翻译：通过在奥氏体再结晶温度以上进行第一次轧制，制备了包含铁素体和马氏体/银相的高强度钢组合物，主要为钒和碳化铁或碳氮化物析出物的铁素体相; 第二次在低钙钛矿再结晶温度以下滚动; Ar3和Ar1相变点之间的第三次滚动，水冷至低于约400℃。

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