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Us Patents
Zirconium Alloys With Improved Corrosion Resistance And Method For Fabricating Zirconium Alloys With Improved Corrosion Resistance
David Colburn - Columbia SC, US Robert Comstock - Irwin PA, US Terrence Cook - Riverdale UT, US Mats Dahlback - Vasteras, SE John P. Foster - Bluffton SC, US Anand Garde - Columbia SC, US Pascal Jourdain - Vasteras, SE Ronald Kesterson - Columbia SC, US Micheal McClarren - New Alexandria PA, US Lynn Nuhfer - Pittsburgh PA, US Jonna Partezana - Finleyville PA, US Kenneth Yueh - Columbia SC, US James A. Boshers - Marshville NC, US Penney File - Lusby MD, US
Assignee:
Westinghouse Electric Company LLC - Cranberry Township PA
International Classification:
G21C 3/07 C22C 16/00
US Classification:
376412, 420423, 420422, 148421
Abstract:
Articles, such as tubing or strips, which have excellent corrosion resistance to water or steam at elevated temperatures, are produced from alloys having 0.2 to 1.5 weight percent niobium, 0.01 to 0.45 weight percent iron, at least one additional alloy element selected from 0.02 to 0.8 weight percent tin, 0.05 to 0.5 weight percent chromium, 0.02 to 0.3 weight percent copper, 0.1 to 0.3 weight percent vanadium, 0.01 to 0.1 weight percent nickel, the balance at least 97 weight percent zirconium, including impurities, wherein the alloy may be fabricated from a process of forging the zirconium alloy into a material, beta quenching the material, forming the material by extruding or hot rolling the material, cold working the material with one or a multiplicity of cold working steps, wherein the cold working step includes cold reducing the material and annealing the material at an intermediate anneal temperature of 960-1105 F., and final working and annealing of the material. The articles formed also show improved weld corrosion resistance with the addition of chromium.
Zirconium Alloys With Improved Corrosion/Creep Resistance Due To Final Heat Treatments
JOHN P. FOSTER - Bluffton SC, US David COLBURN - Ogden UT, US Robert COMSTOCK - Irwin PA, US Terrence COOK - Riverdale UT, US Mats DAHLBACK - Vasteras, SE Anand GARDE - Columbia SC, US Pascal JOURDAIN - Vasteras, SE Ronald KESTERSON - Columbia SC, US Michael MCCLARREN - New Alexandria PA, US Dianna Lynn SVEC NUHFER - Pittsburgh PA, US Guirong PAN - Sumter SC, US Jonna Partezana MUNDORFF - Finleyville PA, US Hsiang Ken YUEH - Charlotte NC, US James BOSHERS - Marshville NC, US Penney FILE - Lusby MD, US Bethany Boshers - , US
Assignee:
WESTINGHOUSE ELECTRIC COMPANY LLC - Cranberry Township PA
International Classification:
C22C 16/00
US Classification:
420423, 420422
Abstract:
Articles, such as tubing or strips, which have excellent corrosion resistance to water or steam at elevated temperatures, are produced from alloys having 0.2 to 1.5 weight percent niobium, 0.01 to 0.6 weight percent iron, and optionally additional alloy elements selected from the group consisting of tin, chromium, copper, vanadium, and nickel with the balance at least 97 weight percent zirconium, including impurities, where a necessary final heat treatment includes one of i) a SRA or PRXA (15-20% RXA) final heat treatment, or ii) a PRXA (80-95% RXA) or RXA final heat treatment.
Zirconium Alloys With Improved Corrosion Resistance And Method For Fabricating Zirconium Alloys With Improved Corrosion
David Colburn - Columbia SC, US Robert Comstock - Irwin PA, US Terrence Cook - Riverdale UT, US Mats Dahlback - Vasteras, SE John Foster - Bluffton SC, US Anand Garde - Columbia SC, US Pascal Jourdain - Vasteras, SE Ronald Kesterson - Columbia SC, US Michael McClarren - New Alexandria PA, US Lynn Nuhfer - Pittsburgh PA, US Jonna Partezana - Pittsburgh PA, US Kenneth Yueh - Columbia SC, US James Boshers - Marshville NC, US Penney File - Lusby MD, US
International Classification:
C22F 1/18 C22C 16/00
US Classification:
148672000, 420423000
Abstract:
Articles, such as tubing or strips, which have excellent corrosion resistance to water or steam at elevated temperatures, are produced from alloys having 0.2 to 1.5 weight percent niobium, 0.01 to 0.45 weight percent iron, at least one additional alloy element selected from 0.02 to 0.8 weight percent tin, 0.05 to 0.5 weight percent chromium, 0.02 to 0.3 weight percent copper, 0.1 to 0.3 weight percent vanadium, 0.01 to 0.1 weight percent nickel, the balance at least 97 weight percent zirconium, including impurities, wherein the alloy may be fabricated from a process of forging the zirconium alloy into a material, beta quenching the material, forming the material by extruding or hot rolling the material, cold working the material with one or a multiplicity of cold working steps, wherein the cold working step includes cold reducing the material and annealing the material at an intermediate anneal temperature of 960-1105 F., and final working and annealing of the material. The articles formed also show improved weld corrosion resistance with the addition of chromium.
constellation since Sep 1981
engineering supervisor nuclear fuel services
Education:
Georgia Institute of Technology 1979 - 1981
Bachelors, Nuclear Engineering
The University of the South 1975 - 1979
Bachelors, Bachelor of Science, Mathematics
Randallstown High School
Skills:
Microsoft Office Nuclear Engineering Energy Power Plants Power Generation Electric Power Nuclear Engineering Reactor Gas Turbines Steam Steam Turbines Turbines Smart Grid Power Systems
Interests:
Music/Songwriting Fossils and Artwork Derived From Nature Reading Natural History Boer War Civil War Enjoy Hitting Antique Shops Collecting Minerals Witch Trials Hermetic Magic and the Occult