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1. 发明申请

WO2007051080A2 HIGH STRENGTH DUAL PHASE STEEL WITH LOW YIELD RATIO, HIGH TOUGHNESS AND SUPERIOR WELDABILITY 审中-公开
标题翻译：低强度，高韧性和超高耐磨性的高强度双相钢
公开(公告)号：WO2007051080A2
公开(公告)日：2007-05-03
申请号：PCT/US2006060030
申请日：2006-10-17
申请人： EXXONMOBIL UPSTREAM RES CO , NIPPON STEEL CORP , BANGARU NARASIMHA-RAO V , KOO JA-YOUNG , JIN HYUN-WOO , OZEKCIN ADNAN , FAIRCHILD DOUGLAS P , TERADA YOSHIO , ASAHI HITOSHI , HARA TAKUYA , SUGIYAMA MASAAKI
发明人： BANGARU NARASIMHA-RAO V , KOO JA-YOUNG , JIN HYUN-WOO , OZEKCIN ADNAN , FAIRCHILD DOUGLAS P , TERADA YOSHIO , ASAHI HITOSHI , HARA TAKUYA , SUGIYAMA MASAAKI
IPC分类号： B32B15/01
CPC分类号： C22C38/44 , B32B15/01 , C21D1/18 , C21D1/19 , C21D6/005 , C21D8/02 , C21D8/021 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/58
摘要： A dual phase, high strength steel having a composite microstructure of soft and hard phases providing a low yield ratio, high strain capacity, superior weldability, and high" toughness is provided. The dual phase steel includes from, about 10% by volume to about 60% by volume of a first phase or constituent consisting essentially of fine-grained ferrite. The first phase has a ferrite mean grain size of about 5 microns or less. The dual phase steel further includes from about 40% by volume to about 90% by volume of a second phase or constituent comprising fine-grained martensite, fine-grained lower bainite, fine-grained granular bainite, fine-grained degenerate upper bainite, or any mixture thereof. Methods for making the same are also provided.
摘要翻译：提供具有提供低屈服比，高应变能力，优异的可焊性和高“韧性的软质和硬质相的复合组织的双相高强度钢，双相钢包括约10体积％至约 60％（体积）的第一相或基本上由细粒铁素体组成的组分，第一相具有约5微米或更小的铁素体平均粒度，双相钢还包括约40体积％至约90体积％体积的第二相或包含细粒马氏体，细晶粒下贝氏体，细粒状贝氏体，细粒退化上贝氏体或其任何混合物的组分，还提供了制备它们的方法。

2. 发明申请

WO2005061749A3 STEEL PLATES FOR ULTRA-HIGH-STRENGTH LINEPIPES AND ULTRA-HIGH-STRENGTH LINEPIPES HAVING EXCELLENT LOW-TEMPERATURE TOUGHNESS AND MANUFACTURING METHODS THEREOF 审中-公开
标题翻译：用于超高强度钢板的钢板和具有优异的低温韧性的超高强度钢板及其制造方法
公开(公告)号：WO2005061749A3
公开(公告)日：2006-08-10
申请号：PCT/JP2004019468
申请日：2004-12-17
申请人： NIPPON STEEL CORP , EXXONMOBIL UPSTREAM RES CO , ASAHI HITOSHI , HARA TAKUYA
发明人： ASAHI HITOSHI , HARA TAKUYA
IPC分类号： C22C38/04 , C22C38/00 , C22C38/08 , C22C38/12
CPC分类号： C22C38/12 , C22C38/002 , C22C38/04 , C22C38/08
摘要： Ultra-high-strength linepipes having excellent low-temperature toughness manufactured by welding together the edges of steel plates comprising C of 0.03 to 0.07 mass%, Si of not more than 0.6 mass%, Mn of 1.5 to 2.5 mass%, P of not more than 0.015 mass%, S of not more than 0.003 mass%, Ni of 0.1 to 1.5 mass%, Mo of 0.15 to 0.60 mass%, Nb of 0.01 to 0.10 mass%, Ti of 0.005 to 0.030 mass%, Al of not more than 0.06 mass%, one or more of required amounts of B, N, V, Cu, Cr, Ca, REM (rare-earth metals) and Mg, with the remainder consisting of iron and unavoidable impurities and having a (Hv-ave)/(Hv-M) ratio between 0.8 and 0.9 at 2.5 = P = 4.0, wherein Hv-ave is the average Vickers hardness in the direction of the thickness of the base metal and Hv-M is the martensite hardness depending on C-content (Hv-M = 270 + 1300C) and a tensile strength TS-C between 900 MPa and 1100 MPa; P = 2.7C + 0.4Si + Mn + 0.8Cr + 0.45(Ni + Cu) + (1 + ß)Mo - 1 + ß(ß = 1 when B = 3 ppm and ß = 0 when B
摘要翻译：通过将包含0.03〜0.07质量％的C，不大于0.6质量％的Si，1.5〜2.5质量％的Mn，1.5〜2.5质量％的Mn，不为P的钢板的边缘焊接在一起，制造出优异的低温韧性的超高强度线管大于0.015质量％，S：0.003质量％以下，Ni：0.1〜1.5质量％，Mo：0.15〜0.60质量％，Nb：0.01〜0.10质量％，Ti：0.005〜0.030质量％大于0.06质量％，所需量的B，N，V，Cu，Cr，Ca，REM（稀土金属）和Mg中的一种或多种，其余由铁和不可避免的杂质组成，并具有（Hv- ave）/（Hv-M）的比例在2.5 = P = 4.0时，其中Hv-ave是贱金属厚度方向上的维氏硬度平均值，Hv-M是取决于C的马氏体硬度（Hv-M = 270±1300℃），拉伸强度TS-C在900MPa〜1100MPa之间; P = 2.7C + 0.4Si + Mn + 0.8Cr + 0.45（Ni + Cu）+（1 +ß）Mo-1 +ß（B = 3ppm时ß= 1，B <3ppm时ß= 0）。

3. 发明申请

WO9905335A8 ULTRA-HIGH STRENGTH, WELDABLE STEELS WITH EXCELLENT ULTRA-LOW TEMPERATURE TOUGHNESS 审中-公开
标题翻译：超高强度，优异的超低温韧性焊接钢
公开(公告)号：WO9905335A8
公开(公告)日：1999-05-06
申请号：PCT/US9815921
申请日：1998-07-28
申请人： EXXON PRODUCTION RESEARCH CO , NIPPON STEEL CORP
发明人： TAMEHIRO HIROSHI , ASAHI HITOSHI , HARA TAKUYA , TERADA YOSHIO , LUTON MICHAEL J , KOO JAYOUNG , BANGARU NARASIMHA-RAO V , PETERSEN CLIFFORD W
IPC分类号： C21D1/19 , C21D8/02 , C22C38/00 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/58
CPC分类号： C21D8/0226 , C21D1/19 , C21D2211/002 , C21D2211/008 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/14
摘要： A steel plate having a tensile strength of at least about 930 MPa (135Ksi), a toughness as measured by Charpy V-notch impact test at -40 DEG C (-40 DEG F) of at least about 120 joules (88 ft-lb), and a microstructure comprising at least about 90 volume percent of a mixture of fine-grained lower bainite and fine-grained lath martensite, wherein at least about 2/3 of said mixture consists of fine-grained lower bainite transformed from unrecrystallized austenite having an average grain size of less than about 10 microns and comprising iron and specified weight percentages of the additives: carbon, silicon, manganese, copper, nickel, niobium, 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 (10) in a first temperature range in which austenite recrystallizes; further reducing said plate in one or more hot rolling passes (10) in a second temperature range in which austenite does not recrystallize, 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.
摘要翻译：拉伸强度为至少约930MPa（135Ksi）的钢板，通过在-40℃（-40°F）下的夏比V型缺口冲击试验测得的至少约120焦耳（88英尺磅））和包含至少约90体积％的细粒度下贝氏体和细粒状板条马氏体的混合物的微结构，其中至少约2/3的所述混合物由从未再结晶的奥氏体转变的细晶粒下贝氏体组成，通过加热制备小于约10微米的平均晶粒尺寸并且包含铁和特定重量百分比的添加剂：碳，硅，锰，铜，镍，铌，钛，铝，钙，稀土金属和镁将钢板加热至合适的温度; 在奥氏体重结晶的第一温度范围内，在一个或多个热轧道（10）中将板坯还原成板; 在奥氏体不再结晶的第二温度范围内在一个或多个热轧道（10）中进一步减少所述板，将所述板淬火（12）至合适的淬火停止温度（16）; 并停止所述淬火并使所述板空气冷却（18）至环境温度。

4. 发明公开

EP2093302A4 WELD STEEL PIPE WITH EXCELLENT LOW-TEMPERATURE TOUGHNESS FOR HIGH-STRENGTH LINE PIPE AND PROCESS FOR PRODUCING THE SAME 失效转让
标题翻译：具有出色冷强度为生产高强度钢管和工艺接钢管
公开(公告)号：EP2093302A4
公开(公告)日：2011-07-27
申请号：EP07859731
申请日：2007-11-30
申请人： NIPPON STEEL CORP
发明人： HARA TAKUYA , ASAHI HITOSHI
IPC分类号： C22C38/00 , B21C37/08 , C21D8/02 , C21D9/08 , C21D9/50 , C22C38/14 , C22C38/58
CPC分类号： B23K9/186 , B23K9/0253 , B23K9/18 , B23K2201/06 , B23K2203/04 , C21D8/02 , C21D8/0226 , C21D8/0263 , C21D9/08 , C21D9/50 , C21D2211/002 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14

5. 发明公开

EP1892309A4 OIL WELL PIPE FOR EXPANDABLE-TUBE USE EXCELLENT IN TOUGHNESS AFTER PIPE EXPANSION AND PROCESS FOR PRODUCING THE SAME 有权
标题翻译：石油钻探管FOR USE IN可膨胀管采用高韧性后生产管径扩张和过程
公开(公告)号：EP1892309A4
公开(公告)日：2010-05-05
申请号：EP06747307
申请日：2006-06-09
申请人： NIPPON STEEL CORP
发明人： ASAHI HITOSHI , MURAKI TARO , NAKAMURA HIDEYUKI , TSURU EIJI
IPC分类号： C22C38/00 , C21D8/10 , C21D9/08 , C21D9/50 , C22C38/06 , C22C38/14 , C22C38/58
CPC分类号： C22C38/002 , C21D1/22 , C21D1/25 , C21D9/14 , C21D9/50 , C21D2211/008 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14

6. 发明公开

EP1867742A4 HIGH-STRENGTH STEEL SHEET AND HIGH-STRENGTH WELDED STEEL PIPE EXCELLING IN DUCTILE FRACTURE PERFORMANCE AND PROCESS FOR PRODUCING THEM 有权
标题翻译：高强度钢板和高强度钢管性能优良的焊接关于延性断裂及其制造方法
公开(公告)号：EP1867742A4
公开(公告)日：2009-07-29
申请号：EP05734253
申请日：2005-04-19
申请人： NIPPON STEEL CORP
发明人： HARA TAKUYA , SHINOHARA YASUHIRO , ASAHI HITOSHI , TERADA YOSHIO
IPC分类号： C22C38/00 , C21D8/10 , C22C33/00 , C22C33/04 , C22C38/04 , C22C38/08 , C22C38/58
CPC分类号： C22C38/02 , C21D8/0205 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/42 , C22C38/44 , C22C38/58
摘要： A high-strength steel sheet and high-strength welded steel pipe excelling in ductile fracture performance that have a tensile strength corresponding to X100 class of API standards; and a process for producing them. There is provided a high-strength steel sheet excelling in ductile fracture performance characterized by being composed of, in terms of mass%, 0.01 to 0.5% C, 0.01 to 3% Si, 0.1 to 5% Mn, =0.03% P, =0.03% S and the balance of Fe and unavoidable impurities, and by having a microstructure wherein 1 to 60%, in terms of area ratio, of ferrite is contained with the balance composed of bainite and martensite, and characterized in that the maximum of degree of {100} accumulation in section resulting from 20° to 50° rotation of through-thickness section on the rolling direction as an axis is =3, and that the through-thickness parallel crack measured by ultrasonic inspection method is

7. 发明公开

EP1854562A4 HIGH-STRENGTH WELDED STEEL PIPE EXCELLENT IN HYDROGEN EMBRITTLEMENT CRACKING RESISTANCE OF WELD METAL AND PROCESS FOR PRODUCING THE SAME 有权
标题翻译：采用焊接AGAINSTWASSERSTOFFVERSPRÖDUNGSRISSE焊缝金属中优异的耐和工艺生产高强度钢管
公开(公告)号：EP1854562A4
公开(公告)日：2009-04-15
申请号：EP06714941
申请日：2006-02-22
申请人： NIPPON STEEL CORP
发明人： TSURU EIJI , HARA TAKUYA , ASAHI HITOSHI , MORIMOTO HIROSHI , TERADA YOSHIO , YOSHIDA TATSUYA , SHINADA KOUICHI
IPC分类号： B21C37/08 , B23K9/025 , B23K9/18 , B23K31/02 , B23K33/00 , C21D3/06 , C21D9/08 , C21D9/50 , C22C38/00 , C22C38/58
CPC分类号： B23K31/027 , B21C37/08 , B23K33/006 , B23K2201/06 , C21D3/06 , C21D9/08 , C21D9/50 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/58 , Y10T29/5185
摘要： The present invention provides a high strength welded steel pipe superior in weld zone embrittlement crack characteristics and a method of production of the same, that is, a method of production of a welded steel pipe superior in hydrogen embrittlement cracking resistance of weld metal characterized by seam welding from the inner and outer surfaces by a tensile strength of 850 MPa or more, then expanding or reducing the size of the pipe for correction, which method of production of welded steel pipe characterized in that the hydrogen concentration of the preceding weld metal is 0.2 cc or less per 100 g at ordinary temperature.

8. 发明公开

EP2036995A4 HIGH-STRENGTH STEEL PIPE WITH EXCELLENT LOW-TEMPERATURE TOUGHNESS FOR LINE PIPE, HIGH-STRENGTH STEEL PLATE FOR LINE PIPE, AND PROCESSES FOR PRODUCING THESE 有权
标题翻译：具有优良的冷冲击强度管材，高强度钢板管道和工艺生产高强度钢管
公开(公告)号：EP2036995A4
公开(公告)日：2010-09-08
申请号：EP07768340
申请日：2007-07-02
申请人： NIPPON STEEL CORP
发明人： HARA TAKUYA , ASAHI HITOSHI , TERADA YOSHIO
IPC分类号： C22C38/00 , B23K35/30 , C21D8/02 , C21D8/10 , C21D9/08 , C21D9/50 , C22C38/14 , C22C38/58
CPC分类号： F16L9/02 , B23K35/30 , C21D8/02 , C21D8/10 , C21D9/08 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58

9. 发明公开

EP1951519A4 HIGH STRENGTH DUAL PHASE STEEL WITH LOW YIELD RATIO, HIGH TOUGHNESS AND SUPERIOR WELDABILITY 审中-公开
标题翻译：高强度双低屈服比的限制，高密度和出色的可焊性双相钢
公开(公告)号：EP1951519A4
公开(公告)日：2008-12-31
申请号：EP06846104
申请日：2006-10-17
申请人： EXXONMOBIL UPSTREAM RES CO , NIPPON STEEL CORP
发明人： BANGARU NARASIMHA-RAO V , KOO JA-YOUNG , JIN HYUN-WOO , OZEKCIN ADNAN , FAIRCHILD DOUGLAS P , TERADA YOSHIO , ASAHI HITOSHI , HARA TAKUYA , SUGIYAMA MASAAKI
IPC分类号： C21D8/02 , C21D1/19 , C21D6/00 , C22C38/04 , C22C38/08
CPC分类号： C22C38/44 , B32B15/01 , C21D1/18 , C21D1/19 , C21D6/005 , C21D8/02 , C21D8/021 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/58
摘要： A dual phase, high strength steel having a composite microstructure of soft and hard phases providing a low yield ratio, high strain capacity, superior weldability, and high toughness is provided. The dual phase steel includes from, about 10% by volume to about 60% by volume of a first phase or constituent consisting essentially of fine-grained ferrite. The first phase has a ferrite mean grain size of about 5 microns or less. The dual phase steel further includes from about 40% by volume to about 90% by volume of a second phase or constituent comprising fine-grained martensite, fine-grained lower bainite, fine-grained granular bainite, fine-grained degenerate upper bainite, or any mixture thereof. Methods for making the same are also provided.
摘要翻译：一种双相，具有提供低屈服比，高应变容量，优异的可焊性，和高韧性的软，硬相的复合组织的高强度钢被提供。双相钢的约10％包含按体积计约60％的第一相的体积或组分基本上由细晶粒的铁素体。第一相具有约5微米或更小的铁氧体的平均晶粒尺寸。双相钢约40％还包括通过体积至约90％的第二相的体积或成分包括细粒马氏体，细粒度下贝氏体，细粒度粒状贝氏体，细粒度退化上贝氏体，或它们的任何混合物。因此，提供了用于制作相同的方法。

10. 发明公开

EP1017862A4 METHOD FOR PRODUCING ULTRA-HIGH STRENGTH, WELDABLE STEELS WITH SUPERIOR TOUGHNESS 失效
标题翻译：方法超高强度，具有优良的韧性焊接钢
公开(公告)号：EP1017862A4
公开(公告)日：2004-06-23
申请号：EP98938067
申请日：1998-07-28
申请人： EXXONMOBIL UPSTREAM RES CO , NIPPON STEEL CORP
发明人： LUTON MICHAEL J , KOO JAYOUNG , BANGARU NARASIMHA-RAO V , PETERSEN CLIFFORD W , TAMEHIRO HIROSHI , ASAHI HITOSHI , HARA TAKUYA , SUGIYAMA MASAAKI
IPC分类号： C21D1/19 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/12 , C22C38/58
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, aluminium, 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 (10) 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 (12) to a suitable Quench Stop Temperature (16); and said quenching is stopped and said plate is allowed to air cool (18) to ambient temperature.

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