By D. Gandy, J. Shingledecker
Advances in fabrics know-how for Fossil energy crops: lawsuits from the 7th overseas convention, October 22-25, 2013, Waikoloa, Hawaii, united states.
One hundred eighty-five individuals representing 18 international locations traveled from world wide to take part within the EPRI seventh foreign convention on Advances in fabrics know-how for Fossil energy crops at the gigantic Island of Hawaii, united states. This convention outfitted at the good fortune of the former 6 meetings initially begun by way of Prof. R. (Vis) Viswanathan, EPRI (FASM) in 1995 in London, England and held each 3 years for the reason that that point in San Sebastian (Spain), Swansea (Wales), Hilton Head Island (USA), Marco Island (USA), and Santa Fe (USA). This court cases comprises the biggest variety of papers ever accrued for this convention. Overwhelming reaction to the 2013 convention (over a 20% bring up in variety of papers and technical talks) triggered the organizers to carry the 1st ever poster consultation. EPRI and ASM have back partnered to post this complaints that is equipped into nine topical components: expertise overviews, nickel-based alloys for complicated ultrasupercritical energy crops, fabrics for generators, alloys T23/24, Grades 91/92, oxidation and corrosion, welding and weld functionality, new alloys thoughts, and creep and normal subject matters.
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Extra resources for Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference
Post weld heat treatment will applied be always. 3 Simulation of in-service exposure conditions: Specimens from the creep test program will be adopted for indentation tests to obtain information on mechanical properties. TEM examinations (head and gauge length) at different times and temperatures to evaluate on base metals and in weld metals or HAZ (Heat Affected Zone), for the welded joints, in order to assess and quantify the strain-induced precipitation effect on overall microstructure evolution (measured in terms of precipitation evolution and coarsening, formation of new phases).
Pipe welding tests were carried out. A sample of welded pipes is shown on Figure 19. We put some specimens which were cut out from the welded portion of pipes into long term creep rupture test. Some advanced 9Cr steels were also tested. Figure 20 shows the cross section of welded SAVE12AD pipe and a bended pipe. In the HAZ section of welds, we didn’t find any small grain structure. 33 Some header mock-ups were made to check manufacturability of actual parts of A-USC boiler. Figure 21 shows a reheater mock-up which uses a pipe shown on Figure 17.
HR6W is being developed by Nippon Steel & Sumitomo Metal for pipes and tubes in the A-USC system, and designed to have good corrosion resistance to combustion gas in the boiler and good creep strength for pressurized pipes and tubes at 700deg-C. 100,000hr creep rupture stress at 700deg-C is expected to be about 90MPa which is the target for large steam pipe materials The creep rupture strength of HR6W weld joint is shown in Figure 15. Creep tensile specimens which contain welded portions were cut out from welded HR6W plates.
Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference by D. Gandy, J. Shingledecker