公开(公告)号：US08141768B2

公开(公告)日：2012-03-27

申请号：US11643528

申请日：2006-12-21

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

Inventor： 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: B23K20/12

CPC classification number: B23K20/1225 ,  B23K20/227 ,  B23K2101/06 ,  B23K2103/02

Abstract: 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.

Abstract translation: 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：US07731776B2

公开(公告)日：2010-06-08

申请号：US11293728

申请日：2005-12-02

Applicant: ChangMin Chun ,  Narasimha-Rao V. Bangaru ,  Neeraj S. Thirumalai ,  Hyun-Woo Jin ,  Jayoung Koo ,  John R. Peterson ,  Robert L. Antram ,  Christopher J. Fowler ,  Emery B. Lendvai-Lintner

Inventor： ChangMin Chun ,  Narasimha-Rao V. Bangaru ,  Neeraj S. Thirumalai ,  Hyun-Woo Jin ,  Jayoung Koo ,  John R. Peterson ,  Robert L. Antram ,  Christopher J. Fowler ,  Emery B. Lendvai-Lintner

IPC: C22C29/14 ,  B22F3/16

CPC classification number: C22C29/14 ,  B22F1/0014 ,  B22F2009/043 ,  B22F2998/10 ,  B22F2999/00 ,  Y10T428/12007 ,  B22F1/0003 ,  B22F3/02 ,  B22F3/1021 ,  B22F3/1035 ,  B22F9/04

Abstract: Multimodal cermet compositions comprising a multimodal grit distribution of the ceramic phase and method of making are provided by the present invention. The multimodal cermet compositions include a) a ceramic phase and b) a metal binder phase, wherein the ceramic phase is a metal boride with a multimodal distribution of particles, wherein at least one metal is selected from the group consisting of Group IV, Group V, Group VI elements of the Long Form of The Periodic Table of Elements and mixtures thereof, and wherein the metal binder phase comprises at least one first element selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, and at least second element selected from the group consisting of Cr, Al, Si and Y, and Ti. The method of making multimodal boride cermets includes the steps of mixing multimodal ceramic phase particles and metal phase particles, milling the ceramic and metal phase particles, uniaxially and optionally isostatically pressing the particles, liquid phase sintering of the compressed mixture at elevated temperatures, and finally cooling the multimodal cermet composition. Advantages disclosed by the multimodal cermets are high packing density of the ceramic phase, high fracture toughness and improved erosion resistance at high temperatures up to 1000° C. The disclosed multimodal cermets are suitable in high temperature erosion/corrosion applications in various chemical and petroleum environments.

Abstract translation: 包含陶瓷相的多峰砂粒分布的多模金属陶瓷组合物及其制造方法由本发明提供。 多峰金属陶瓷组合物包括a）陶瓷相和b）金属粘结相，其中所述陶瓷相是具有多峰颗粒分布的金属硼化物，其中至少一种金属选自第IV族，第V族 元素周期表的Long形式的VI族元素及其混合物，其中金属粘合剂相包含至少一种选自Fe，Ni，Co，Mn及其混合物的第一元素，至少 选自Cr，Al，Si和Y的第二元素和Ti。 制备多峰硼化物金属陶瓷的方法包括以下步骤：将多峰陶瓷相颗粒和金属相颗粒混合，研磨陶瓷和金属相颗粒，单轴和任选地等压挤压颗粒，在高温下液相烧结压缩混合物，最后 冷却多峰金属陶瓷组合物。 多峰金属陶瓷的优点是陶瓷相的高填充密度，高断裂韧性和在高达1000℃的高温下的耐腐蚀性得到改善。所公开的多峰金属陶瓷适用于各种化学和石油环境中的高温侵蚀/腐蚀应用 。

公开(公告)号：US20080257454A1

公开(公告)日：2008-10-23

申请号：US10829818

申请日：2004-04-22

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

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

IPC: C23C8/00

CPC classification number: C23C8/22

Abstract: 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.

Abstract translation: 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

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

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

IPC: B32B15/00

CPC classification number: B23K26/18 ,  B23K26/009 ,  B23K26/356 ,  C21D9/08 ,  C21D10/005 ,  Y10T428/12493

Abstract: 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.

Abstract translation: 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：US20070131054A1

公开(公告)日：2007-06-14

申请号：US10829819

申请日：2004-04-22

Applicant: Narasimha-Rao Bangaru ,  Jayoung Koo ,  ChangMin Chun ,  Hyun-Woo Jin ,  John Peterson ,  Robert Antram ,  Christopher Fowler

Inventor： Narasimha-Rao Bangaru ,  Jayoung Koo ,  ChangMin Chun ,  Hyun-Woo Jin ,  John Peterson ,  Robert Antram ,  Christopher Fowler

IPC: C22C29/02 ,  C22C29/14 ,  C22C29/16

CPC classification number: C22C29/14 ,  C22C29/00 ,  C23C30/00 ,  Y10T428/31678

Abstract: 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.

Abstract translation: 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：US20060162492A1

公开(公告)日：2006-07-27

申请号：US11369614

申请日：2006-03-07

Applicant: ChangMin Chun ,  Narasimha-Rao Bangaru ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Peterson ,  Robert Antram ,  Christopher Fowler

Inventor： ChangMin Chun ,  Narasimha-Rao Bangaru ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Peterson ,  Robert Antram ,  Christopher Fowler

IPC: C22C29/06

CPC classification number: C22C29/06 ,  B04C5/085 ,  B22F2998/00 ,  C22C32/0052 ,  C23C30/00 ,  Y10T428/12007 ,  B22F1/0085

Abstract: Cermets are provided in which a substantially stoichiometric metal carbide ceramic phase along with a reprecipitated metal carbide phase, represented by the formula MxCy, is dispersed in a metal binder phase. In MxCy M is Cr, Fe, Ni, Co, Si, Ti, Zr, Hf, V, Nb, Ta, Mo or mixtures thereof, x and y are whole or fractional numerical values with x ranging from 1 to 30 and y from 1 to 6. These cermets are particularly useful in protecting surfaces from erosion and corrosion at high temperatures.

Abstract translation: 提供了金属陶瓷，其中基本上化学计量的金属碳化物陶瓷相以及由式M x x C y表示的再沉淀的金属碳化物相分散在金属粘结相 。 在M x S中，M是Cr，Fe，Ni，Co，Si，Ti，Zr，Hf，V，Nb，Ta，Mo或其混合物，x和 y是整数或分数值，x为1至30，y为1至6.这些金属陶瓷特别适用于在高温下保护表面免受腐蚀和腐蚀。

公开(公告)号：US20060137486A1

公开(公告)日：2006-06-29

申请号：US10829821

申请日：2004-04-22

Applicant: Narasimha-Rao Bangaru ,  ChangMin Chun ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Peterson ,  Robert Antram ,  Christopher Fowler

Inventor： Narasimha-Rao Bangaru ,  ChangMin Chun ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Peterson ,  Robert Antram ,  Christopher Fowler

IPC: C22C29/12

CPC classification number: C22C29/12 ,  C22C32/0015 ,  C22C32/0026 ,  C23C30/00 ,  Y10T428/12007

Abstract: One embodiment of 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 Al, Si, Mg, Ca, Y, Fe, Mn, Group IV, Group V, Group VI elements, and mixtures thereof, Q is oxide, R is a base 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 and Si and at least one reactive wetting element selected from the group consisting of Ti, Zr, Hf, Ta, Sc, Y, La, and Ce.

Abstract translation: 本发明的一个实施方案包括由式（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Al，Si， Mg，Ca，Y，Fe，Mn，IV族，V族，VI族元素及其混合物，Q为氧化物，R为选自Fe，Ni Co，Mn的贱金属及其混合物，S 基本上由选自Cr，Al和Si中的至少一种元素和至少一种选自Ti，Zr，Hf，Ta，Sc，Y，La和Ce的反应性润湿元素组成。

公开(公告)号：US06565678B2

公开(公告)日：2003-05-20

申请号：US09920894

申请日：2001-08-02

Applicant: Douglas P. Fairchild ,  Jayoung Koo ,  Narasimha-Rao V. Bangaru ,  Mario Luis Macia ,  Danny Lee Beeson ,  Adnan Ozekcin

Inventor： Douglas P. Fairchild ,  Jayoung Koo ,  Narasimha-Rao V. Bangaru ,  Mario Luis Macia ,  Danny Lee Beeson ,  Adnan Ozekcin

IPC: C22C3808

CPC classification number: C22C38/02 ,  B23K35/3066 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58

Abstract: Weld metals suitable for joining high strength, low alloy steels are provided. These weld metals have microstructures of acicular ferrite interspersed in a hard constituent, such as lath martensite, yield strengths of at least about 690 MPa (100 ksi), and DBTTs lower than about −50° C. (−58° F.) as measured by a Charpy energy versus temperature curve. These weld metals include about 0.04 wt % to about 0.08 wt % carbon; about 1.0 wt % to about 2.0 wt % manganese; about 0.2 wt % to about 0.7 wt % silicon; about 0.30 wt % to 0.80 wt % molybdenum; about 2.3 wt % to about 3.5 wt % nickel; about 0.0175 wt % to about 0.0400 wt % oxygen, and at least one additive selected from the group consisting of (i) up to about 0.04 wt % zirconium, and (ii) up to about 0.02 wt % titanium.

公开(公告)号：US5900075A

公开(公告)日：1999-05-04

申请号：US889770

申请日：1997-07-08

Applicant: Jayoung Koo ,  Michael J. Luton

Inventor： Jayoung Koo ,  Michael J. Luton

IPC: C21D6/02 ,  C21D7/12 ,  C21D8/02 ,  C21D8/10 ,  C22C38/04 ,  C22C38/08 ,  C22C38/16 ,  C22C38/46 ,  C22C38/48 ,  C22C38/58 ,  C22C38/12

CPC classification number: C21D6/02 ,  C21D8/0226 ,  C22C38/04 ,  C22C38/08 ,  C22C38/16 ,  C22C38/46 ,  C22C38/48 ,  C22C38/58 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/004 ,  C21D2211/008 ,  C21D7/12 ,  C21D8/10

Abstract: High strength steel is produced by a first rolling of a steel composition, reheated above 1100.degree. C., above the austenite recrystallization, a second rolling below the austenite recrystallization temperature, water cooling from above AR.sub.3 to less than 400.degree. C. and followed by tempering below the Ac.sub.1 transformation point.

Abstract translation: 高强度钢是通过对钢组合物进行第一次轧制，在1100℃以上再加热，高于奥氏体重结晶，在奥氏体再结晶温度以下进行第二次轧制，从AR3以上的水冷却至小于400℃， 回火以下Ac1转型点。

公开(公告)号：US5876521A

公开(公告)日：1999-03-02

申请号：US483347

申请日：1995-06-07

Applicant: Jayoung Koo ,  Michael John Luton

Inventor： Jayoung Koo ,  Michael John Luton

IPC: C21D6/02 ,  C21D7/12 ,  C21D8/02 ,  C21D8/10 ,  C22C38/00 ,  C22C38/04 ,  C22C38/08 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/47

CPC classification number: C22C38/16 ,  C21D6/02 ,  C21D8/0226 ,  C22C38/04 ,  C22C38/08 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/004 ,  C21D2211/008 ,  C21D7/12 ,  C21D8/10

Abstract: High strength steel is produced by a first rolling of a steel composition, reheated above 1100.degree. C., above the austenite recrystallization, a second rolling below the austenite recrystallization temperature, water cooling from above Ar.sub.3 to less than 400.degree. C. and followed by tempering below the Ac.sub.1 transformation point.

Abstract translation: 高强度钢是通过钢坯组合物的第一次轧制，在1100℃以上再加热，高于奥氏体再结晶，在奥氏体再结晶温度以下进行第二次轧制，从Ar3以上的水冷却至小于400℃， 回火以下Ac1转型点。