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.

公开(公告)号：US20080276757A1

公开(公告)日：2008-11-13

申请号：US10829823

申请日：2004-04-22

申请人： Narasimha-Rao Venkata Bangaru ,  ChangMin Chun ,  Neeraj Srinivas Thirumalai ,  Shiun Ling ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Roger Peterson ,  Robert Lee Antram ,  Christopher John Fowler

发明人： Narasimha-Rao Venkata Bangaru ,  ChangMin Chun ,  Neeraj Srinivas Thirumalai ,  Shiun Ling ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Roger Peterson ,  Robert Lee Antram ,  Christopher John Fowler

IPC分类号： C22C29/08

CPC分类号： C22C29/067

摘要： Cermets are provided in which the ceramic phase is selected from the group consisting of Cr23C6, Cr7C3, Cr3C2 and mixtures thereof. The binder phase is selected from certain specified Ni/Cr alloys and certain Fe/Ni/Cr alloys. These cermets are particularly useful in protecting surfaces from erosion at high temperatures.

摘要翻译： 提供了金属陶瓷，其中陶瓷相选自Cr 23 C 6 C 6 C 6 C 7 C 6， SUB 3，Cr 3 3 C 2和它们的混合物。 粘结相选自某些特定的Ni / Cr合金和某些Fe / Ni / Cr合金。 这些金属陶瓷特别适用于在高温下保护表面免受侵蚀。

公开(公告)号：US07438741B1

公开(公告)日：2008-10-21

申请号：US10829823

申请日：2004-04-22

申请人： Narasimha-Rao Venkata Bangaru ,  ChangMin Chun ,  Neeraj Srinivas Thirumalai ,  Shiun Ling ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Roger Peterson ,  Robert Lee Antram ,  Christopher John Fowler

发明人： Narasimha-Rao Venkata Bangaru ,  ChangMin Chun ,  Neeraj Srinivas Thirumalai ,  Shiun Ling ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Roger Peterson ,  Robert Lee Antram ,  Christopher John Fowler

IPC分类号： C22C29/06

CPC分类号： C22C29/067

摘要： Cermets are provided in which the ceramic phase is selected from the group consisting of Cr23C6, Cr7C3, Cr3C2 and mixtures thereof. The binder phase is selected from certain specified Ni/Cr alloys and certain Fe/Ni/Cr alloys. These cermets are particularly useful in protecting surfaces from erosion at high temperatures.

摘要翻译： 提供了金属陶瓷，其中陶瓷相选自Cr 23 C 6 C 6 C 6 C 6 C 6， SUB 3，Cr 3 3 C 2和它们的混合物。 粘结相选自某些特定的Ni / Cr合金和某些Fe / Ni / Cr合金。 这些金属陶瓷特别适用于在高温下保护表面免受侵蚀。

公开(公告)号：US08141768B2

公开(公告)日：2012-03-27

申请号：US11643528

申请日：2006-12-21

申请人： Steven J. Ford ,  Neeraj Thirumalai ,  James Ronald Rigby ,  Mark Biegler ,  Narasimha-Rao Venkata Bangaru ,  Jayoung Koo ,  Glen A. Vaughn ,  Raghavan Ayer ,  Douglas P. Fairchild

发明人： Steven J. Ford ,  Neeraj Thirumalai ,  James Ronald Rigby ,  Mark Biegler ,  Narasimha-Rao Venkata Bangaru ,  Jayoung Koo ,  Glen A. Vaughn ,  Raghavan Ayer ,  Douglas P. Fairchild

IPC分类号： B23K20/12

CPC分类号： B23K20/1225 ,  B23K20/227 ,  B23K2101/06 ,  B23K2103/02

摘要： A method for welding and repairing cracks in metal parts is provided by subjecting the metal parts to be welded to friction stir welding and the cracks to be repaired to friction stir processing under conditions sufficient to provide a weld joint or crack repair having a preselected property or set of properties based upon the intended use of the weldment. The FSW and FSP methods are advantageous in joining and repairing metal structures and components in applications for natural gas transportation and storage, oil and gas well completion and production, and oil and gas refinery and chemical plants.

摘要翻译： 一种用于焊接和修复金属部件中的裂纹的方法是通过在足以提供具有预选性质的焊接接头或裂缝修复的条件下对要焊接的金属部件进行摩擦搅拌焊接和要修复的裂纹进行摩擦搅拌加工的方法， 基于焊件的预期用途的一组属性。 FSW和FSP方法在天然气运输和储存，油气井完井和生产以及油气炼厂和化工厂的应用中，有利于接合和修复金属结构和部件。

公开(公告)号：US20080257454A1

公开(公告)日：2008-10-23

申请号：US10829818

申请日：2004-04-22

申请人： ChangMin Chun ,  Narasimha-Rao Venkata Bangaru ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Roger Peterson ,  Robert Lee Antram ,  Christopher John Fowler

发明人： ChangMin Chun ,  Narasimha-Rao Venkata Bangaru ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Roger Peterson ,  Robert Lee Antram ,  Christopher John Fowler

IPC分类号： C23C8/00

CPC分类号： C23C8/22

摘要： Cermets, particularly composition gradient cermets can be prepared starting with suitable bulk metal alloys by a reactive heat treatment process involving a reactive environment selected from the group consisting of reactive carbon, reactive nitrogen, reactive boron, reactive oxygen and mixtures thereof.

摘要翻译： 金属陶瓷，特别是组成梯度金属陶瓷可以通过涉及选自反应性碳，活性氮，活性硼，活性氧及其混合物的反应性环境的反应性热处理方法从合适的块状金属合金开始制备。

公开(公告)号：US20080032152A1

公开(公告)日：2008-02-07

申请号：US11499800

申请日：2006-08-04

申请人： Glen A. Vaughn ,  Narasimha-Rao Venkata Bangaru ,  Jayoung Koo ,  Raghavan Ayer ,  Danny L. Beeson ,  Neeraj S. Thirumalai ,  David A. Baker ,  David A. Norman

发明人： Glen A. Vaughn ,  Narasimha-Rao Venkata Bangaru ,  Jayoung Koo ,  Raghavan Ayer ,  Danny L. Beeson ,  Neeraj S. Thirumalai ,  David A. Baker ,  David A. Norman

IPC分类号： B32B15/00

CPC分类号： B23K26/18 ,  B23K26/009 ,  B23K26/356 ,  C21D9/08 ,  C21D10/005 ,  Y10T428/12493

摘要： The use of laser shock processing in oil & gas and/or petrochemical applications is provided by the present invention. The use includes subjecting friction stir weldments, fusion weldments, and other critical regions of ferrous and non-ferrous alloy components used in oil & gas and petrochemical applications to laser shock processing to create residual compressive stresses near the surface of the treated area. The residual compressive forces in the ferrous or non-ferrous components improve properties including, inter alia, is surface strength, fatigue life, surface hardness, stress corrosion resistance, fatigue resistance, and environmental cracking resistance. Laser shock processing finds particular application in high strength pipelines, steel catenary risers, top tension risers, threaded components, liquefied natural gas containers, pressurized liquefied natural gas containers, deep water oil drill strings, riser/casing joints, and well-head equipment.

摘要翻译： 在油气和/或石化应用中使用激光冲击加工由本发明提供。 该用途包括将摩擦搅拌焊件，熔接焊缝以及用于石油和天然气和石油化学应用中的铁和非铁合金部件的其它关键区域进行激光冲击加工，以在处理区域的表面附近产生残余压应力。 亚铁或有色金属组分中的残余压缩力改善了表面强度，疲劳寿命，表面硬度，耐应力腐蚀性，耐疲劳性和耐环境开裂性等特性。 激光冲击加工特别适用于高强度管道，钢悬臂立管，顶部拉力梯，螺纹部件，液化天然气集装箱，加压液化天然气集装箱，深水钻井钻柱，立管/套管接头和井口设备。

公开(公告)号：US20120177933A1

公开(公告)日：2012-07-12

申请号：US11879354

申请日：2007-07-17

申请人： Narasimha-Rao Venkata Bangaru ,  Jayoung Koo ,  ChangMin Chun ,  Hyun-Woo Jin ,  John Roger Peterson ,  Robert Lee Antram ,  Christopher John Fowler

发明人： Narasimha-Rao Venkata Bangaru ,  Jayoung Koo ,  ChangMin Chun ,  Hyun-Woo Jin ,  John Roger Peterson ,  Robert Lee Antram ,  Christopher John Fowler

IPC分类号： B32B15/04 ,  B32B15/02

CPC分类号： C22C29/14 ,  C22C29/00 ,  C23C30/00 ,  Y10T428/31678

摘要： A cermet composition represented by the formula (PQ)(RS)X comprising: a ceramic phase (PQ), a binder phase (RS) and X wherein X is at least one member selected from the group consisting of an oxide dispersoid E, an intermetallic compound F and a derivative compound G wherein said ceramic phase (PQ) is dispersed in the binder phase (RS) as particles of diameter in the range of about 0.5 to 3000 microns, and said X is dispersed in the binder phase (RS) as particles in the size range of about 1 nm to 400 nm.

摘要翻译： 由式（PQ）（RS）X表示的金属陶瓷组合物包括：陶瓷相（PQ），粘结相（RS）和X，其中X是选自氧化物分散相E， 金属间化合物F和衍生化合物G，其中所述陶瓷相（PQ）作为直径在约0.5至3000微米范围内的颗粒分散在粘结相（RS）中，并且所述X分散在粘结相（RS）中， 作为大小范围为约1nm至400nm的颗粒。

公开(公告)号：US20070175967A1

公开(公告)日：2007-08-02

申请号：US11639533

申请日：2006-12-15

申请人： Narasimha-Rao Venkata Bangaru ,  Jayoung Koo ,  Glen A. Vaughn ,  Raghavan Ayer ,  Douglas P. Fairchild

发明人： Narasimha-Rao Venkata Bangaru ,  Jayoung Koo ,  Glen A. Vaughn ,  Raghavan Ayer ,  Douglas P. Fairchild

IPC分类号： B23K20/12

CPC分类号： B23K20/122 ,  B23K20/128 ,  B23K2101/04 ,  B23K2103/02

摘要： A method for welding and repairing cracks in metal parts is provided by subjecting the metal parts to be welded to friction stir welding and the cracks to be repaired to friction stir processing under conditions sufficient to provide a weld joint or crack repair having a preselected property or set of properties based upon the intended use of the weldment.

摘要翻译： 一种用于焊接和修复金属部件中的裂纹的方法是通过在足以提供具有预选性质的焊接接头或裂缝修复的条件下对要焊接的金属部件进行摩擦搅拌焊接和要修复的裂纹进行摩擦搅拌加工的方法， 基于焊件的预期用途的一组属性。

公开(公告)号：US07175686B2

公开(公告)日：2007-02-13

申请号：US10829822

申请日：2004-04-22

申请人： ChangMin Chun ,  Narasimha-Rao Venkata Bangaru ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Roger Peterson ,  Robert Lee Antram ,  Christopher John Fowler

发明人： ChangMin Chun ,  Narasimha-Rao Venkata Bangaru ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Roger Peterson ,  Robert Lee Antram ,  Christopher John Fowler

IPC分类号： C22C29/16

CPC分类号： B04C5/085 ,  C22C29/16 ,  C22C32/0068 ,  C23C30/00

摘要： The invention includes a cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and a binder phase (RS) wherein, P is a metal selected from the group consisting of Si, Mn, Fe, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and mixtures thereof, Q is nitride, R is a metal selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, S consists essentially of at least one element selected from Cr, Al, Si, and Y, and at least one reactive wetting aliovalent element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and mixtures thereof.

摘要翻译： 本发明包括由式（PQ）（RS）表示的金属陶瓷组合物，其包含：陶瓷相（PQ）和粘结相（RS），其中P是选自Si，Mn，Fe，Ti ，Zr，Hf，V，Nb，Ta，Cr，Mo，W及其混合物，Q为氮化物，R为选自Fe，Ni，Co，Mn及其混合物的金属，S主要由 选自Cr，Al，Si和Y中的至少一种元素，以及选自Ti，Zr，Hf，V，Nb，Ta，Cr，Mo，W及其混合物中的至少一种反应性润湿的二价选择元素。

公开(公告)号：US20070181647A1

公开(公告)日：2007-08-09

申请号：US11643528

申请日：2006-12-21

申请人： Steven Ford ,  Neeraj Thirumalai ,  James Rigby ,  Mark Biegler ,  Narasimha-Rao Venkata Bangaru ,  Jayoung Koo ,  Glen Vaughn ,  Raghavan Ayer ,  Douglas Fairchild

发明人： Steven Ford ,  Neeraj Thirumalai ,  James Rigby ,  Mark Biegler ,  Narasimha-Rao Venkata Bangaru ,  Jayoung Koo ,  Glen Vaughn ,  Raghavan Ayer ,  Douglas Fairchild

IPC分类号： A47J36/02

CPC分类号： B23K20/1225 ,  B23K20/227 ,  B23K2101/06 ,  B23K2103/02

摘要： A method for welding and repairing cracks in metal parts is provided by subjecting the metal parts to be welded to friction stir welding and the cracks to be repaired to friction stir processing under conditions sufficient to provide a weld joint or crack repair having a preselected property or set of properties based upon the intended use of the weldment. The FSW and FSP methods are advantageous in joining and repairing metal structures and components in applications for natural gas transportation and storage, oil and gas well completion and production, and oil and gas refinery and chemical plants.

摘要翻译： 一种用于焊接和修复金属部件中的裂纹的方法是通过在足以提供具有预选性质的焊接接头或裂缝修复的条件下对要焊接的金属部件进行摩擦搅拌焊接和要修复的裂纹进行摩擦搅拌加工的方法， 基于焊件的预期用途的一组属性。 FSW和FSP方法在天然气运输和储存，油气井完井和生产以及油气炼厂和化工厂的应用中，有利于接合和修复金属结构和部件。