Download e-book for iPad: Advances in Materials Technology for Fossil Power Plants: by D. Gandy, J. Shingledecker

By D. Gandy, J. Shingledecker

ISBN-10: 1627080600

ISBN-13: 9781627080606

Advances in fabrics know-how for Fossil energy vegetation: court cases from the 7th foreign convention, October 22-25, 2013, Waikoloa, Hawaii, united states.

One hundred eighty-five contributors representing 18 international locations traveled from world wide to take part within the EPRI seventh foreign convention on Advances in fabrics expertise for Fossil strength vegetation at the colossal Island of Hawaii, united states. This convention equipped at the luck of the former 6 meetings initially all started via Prof. R. (Vis) Viswanathan, EPRI (FASM) in 1995 in London, England and held each 3 years on the grounds that that point in San Sebastian (Spain), Swansea (Wales), Hilton Head Island (USA), Marco Island (USA), and Santa Fe (USA). This complaints comprises the biggest variety of papers ever gathered for this convention. Overwhelming reaction to the 2013 convention (over a 20% raise in variety of papers and technical talks) caused the organizers to carry the 1st ever poster consultation. EPRI and ASM have back partnered to submit this lawsuits that is equipped into nine topical components: expertise overviews, nickel-based alloys for complicated ultrasupercritical strength vegetation, fabrics for generators, alloys T23/24, Grades 91/92, oxidation and corrosion, welding and weld functionality, new alloys recommendations, and creep and normal subject matters.

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Extra info for Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference

Example text

The aim of the development of FENIX-700 is to build a rotor heavier than 10 tons without segregation in the material. The purpose of LTES and TOS1X is to target a weight of around 10 tons which will be welded to steel parts to make a 30 to 40-ton rotor. 34 Materials Temperature Level Weight Development Target FENIX-700 700℃ >10ton Ni-base material heavier than 10 tons without segregation LTES700R >700℃ 30~40ton >720℃ ↑ Ni:10ton + Steel:20~30ton Welding 10 ton Ni-base material with good weldability to steel TOS1X 10 ton Ni-base material with good weldability to steel Figure 22 Steam turbine rotor materials FENIX-700 which has superior long-term stability at 700deg-C was developed from Alloy706 by reducing Nb content and increasing Ti and Al content2).

This configuration would enable us to choose ferritic materials for the main steam system. It was expected to have a good level of thermal efficiency improvement and require only light remodeling without the heavy use of Ni-based alloys. 27 We considered Ni-based alloys for the 700 deg-C class turbine rotors. It is necessary to use Ni or Ni-Fe-based wrought material for rotors of 700 deg-C class steam turbines unless advanced cooling technology is used. However, it is difficult to make large Ni or Ni-Fe-based wrought parts and it is assumed that the largest possible size of a part is around 10 tons.

25 shows a large LTES700 material. Welding technology is crucial for this material. Welding tests including the welding of dissimilar materials were carried out. Figure 26 shows a similar and a dissimilar welding of LTES700R. Figure 23 Coefficient of thermal expansion of LTES700R (Courtesy of Mitsubishi Heavy Industries) 35 Figure 24 Creep rupture strength of LTES700R (Courtesy of Mitsubishi Heavy Industries) Figure 25 Large LTES700R material before forging (Courtesy of Mitsubishi Heavy Industries) Figure 26 Welding test of LTES700R (Courtesy of Mitsubishi Heavy Industries) 36 Figure 27 TOS1X creep rupture strength (Courtesy of Toshiba) TOS1X was developed from Alloy617.

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Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference by D. Gandy, J. Shingledecker


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