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    • 3. 发明申请
    • ULTRA-HIGH STRENGTH AUSAGED STEELS WITH EXCELLENT CRYOGENIC TEMPERATURE TOUGHNESS
    • 超高强度钢超高温低温韧性
    • WO0040764A3
    • 2001-03-08
    • PCT/US9930055
    • 1999-12-16
    • EXXONMOBIL UPSTREAM RES CO
    • KOO JAYOUNGBANGARU NARASIMHA-RAO VVAUGHN GLEN AAYER RAGHAVAN
    • C21D1/19C21D1/20C21D6/00C21D8/02C22C38/00C22C38/04C22C38/08C22C38/12C22C38/14C22C38/16C22C38/58C21D7/13
    • C21D6/001C21D1/19C21D1/20C21D7/13C21D8/02C21D8/0226C21D9/0068C21D9/08C21D2211/001C21D2211/002C21D2211/008C22C38/001C22C38/04C22C38/08C22C38/12C22C38/14C22C38/16
    • An ultra-high strength, weldable, low alloy steel with excellent cryogenic temperature toughness in the base plate and in the heat affected zone (HAZ) when welded, having a tensile strength greater than about 830 MPa (120 ksi) and a microstructure comprising (i) predominantly fine-grained lower bainite, fine-grained lath martensite, fine granular bainite (FGB), or mixtures thereof, and (ii) up to about 10 vol % retained austenite, 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.
    • 在焊接时,在底板和热影响区(HAZ)中具有优异的低温韧性的超高强度,可焊接的低合金钢,具有大于约830MPa(120ksi)的拉伸强度和包含( i)主要是细粒度的下贝氏体,细粒状板条马氏体,细粒状贝氏体(FGB)或其混合物,和(ii)高达约10体积%的残余奥氏体,通过加热包括铁和指定的钢板 碳,锰,镍,氮,铜,铬,钼,硅,铌,钒,钛,铝和硼中的一些或所有添加剂的重量百分数; 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。
    • 4. 发明申请
    • ULTRA-HIGH STRENGTH STEELS WITH EXCELLENT CRYOGENIC TEMPERATURE TOUGHNESS
    • 超高强度钢,具有优异的低温韧性
    • WO0039352A3
    • 2000-09-21
    • PCT/US9929802
    • 1999-12-16
    • EXXONMOBIL UPSTREAM RES CO
    • KOO JAYOUNGBANGARU NARASIMHA-RAO VAYER RAGHAVAN
    • C21D1/18C21D8/02C22C38/08C22C38/12C22C38/16C22C38/06C22C38/14
    • C22C38/08C21D1/18C21D8/0226C21D2211/002C21D2211/008C22C38/12C22C38/16
    • An ultra-high strength, weldable, low alloy steel, containing less than 9 wt% nickel, with excellent cryogenic temperature toughness in the base plate and in the heat affected zone (HAZ) when welded, having a tensile strength greater than about 830 MPa (120 ksi) and a microstructure comprising predominantly tempered fine-grained lath martensite, tempered fine-grained lower bainite, tempered fine granular bainite (FGB), or mixtures thereof, 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; stopping the quenching; and tempering the plate at a suitable temperature for a period of time sufficient to cause precipitation of hardening particles.
    • 一种超高强度,可焊接的低合金钢,其含有少于9重量%的镍,在焊接时在基板和热影响区(HAZ)中具有优异的低温韧性,其抗拉强度大于约830MPa (120ksi)和包含主要回火细粒板条马氏体,回火细粒下贝氏体,回火细粒贝氏体(FGB)或其混合物的显微组织通过如下制备:将包含铁的钢板和特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; 在奥氏体再结晶的温度范围内在一次或多次轧制中将板坯减压成板材; 在奥氏体再结晶温度以下和高于AR3转变温度的温度范围内进行一次或多次轧制; 将精轧后的板淬火至合适的淬火停止温度; 停止淬火; 并在合适的温度下将板回火一段足以引起硬化颗粒沉淀的时间。
    • 5. 发明公开
    • ULTRA-HIGH STRENGTH AUSAGED STEELS WITH EXCELLENT CRYOGENIC TEMPERATURE TOUGHNESS
    • 超声波清洗机澳大利亚麻醉师麻省理工医师TIVTEMPERATURZÄHIGKEIT
    • EP1169485A4
    • 2004-11-10
    • EP99972028
    • 1999-12-16
    • EXXONMOBIL UPSTREAM RES CO
    • KOO JAYOUNGBANGARU NARASIMHA-RAO VVAUGHN GLEN AAYER RAGHAVAN
    • C21D1/19C21D1/20C21D6/00C21D8/02C22C38/00C22C38/04C22C38/08C22C38/12C22C38/14C22C38/16C22C38/58
    • C21D6/001C21D1/19C21D1/20C21D7/13C21D8/02C21D8/0226C21D9/0068C21D9/08C21D2211/001C21D2211/002C21D2211/008C22C38/001C22C38/04C22C38/08C22C38/12C22C38/14C22C38/16
    • An ultra-high strength, weldable, low alloy steel with excellent cryogenic temperature toughness in the base plate and in the heat affected zone (HAZ) when welded, having a tensile strength greater than about 830 MPa (120 ksi) and a microstructure comprising (i) predominantly fine-grained lower bainite, fine-grained lath martensite, fine granular bainite (FGB), or mixtures thereof, and (ii) up to about 10 vol % retained austenite, 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.
    • 在焊接时,在底板和热影响区(HAZ)中具有优异的低温韧性的超高强度,可焊接的低合金钢,具有大于约830MPa(120ksi)的拉伸强度和包含( i)主要是细粒度的下贝氏体,细粒状板条马氏体,细粒状贝氏体(FGB)或其混合物,和(ii)高达约10体积%的残余奥氏体,通过加热包含铁的钢板和规定的 碳,锰,镍,氮,铜,铬,钼,硅,铌,钒,钛,铝和硼中的一些或所有添加剂的重量百分数; 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; 在奥氏体再结晶温度以下且高于Ar3相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基本上等温地保持在QST或缓慢冷却板,或者简单地将板空气冷却到环境温度。
    • 9. 发明公开
    • ULTRA-HIGH STRENGTH, WELDABLE, ESSENTIALLY BORON-FREE STEELS WIT H SUPERIOR TOUGHNESS
    • ULTRAHOCHFESTE,SCHWEISSBARE,IM WESENTLICHEN BOR-FREIE STLEHLE MITÜBERRAGENDERZÄHIGKEIT
    • EP1025271A4
    • 2001-07-18
    • EP98938068
    • 1998-07-28
    • EXXONMOBIL UPSTREAM RES CONIPPON STEEL CORP
    • KOO JAYOUNGLUTON MICHAEL JBANGARU NARASIMHA-RAO VPETERSEN CLIFFORD WTAMEHIRO HIROSHIASAHI HITOSHIHARA TAKUYATERADA YOSHIO
    • C22C38/00C21D1/19C22C38/04C22C38/08C22C38/12C22C38/14C22C38/58
    • C22C38/08C21D1/19C21D2211/002C21D2211/005C22C38/04C22C38/12C22C38/14
    • 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 (90ft-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 (10) passes in a first temperature range in which austenite recrystallizes; further reducing said plate in one or more hot rolling (10) 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 (12) said plate to a suitable Quench Stop Temperature (16); and stopping said quenching and allowing said plate to air cool (18) to ambient temperature.
    • 具有至少约900MPa(130ksi)拉伸强度的超高强度基本上无硼的钢,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指定重量百分数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。