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high-nickel alloys

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Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 867-876, October 11–14, 2016,
...-term safety and service reliability of power plants. The corrosion resistance of alloys is one of the most important factors for the application in AUSC power plants. AUSC power plants austenitic steel boiler efficiency corrosion resistance high-temperature oxidation nickel-based alloys...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1237-1249, October 21–24, 2019,
... by additions of, typically, 3% cobalt and tungsten with controlled additions of boron and nitrogen. While development of 9%Cr steels has continued since the last EPRI high temperature material conference in 2016 (Portugal), parallel developments in nickel alloy castings for even higher temperature and pressure...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 1066-1074, October 15–18, 2024,
... Abstract Nitridation is a high-temperature material degradation issue that can occur in air and in environments containing nitrogen, ammonia, etc., and in a variety of industrial processes. The nitridation behavior of several commercial nickel- and cobalt-based alloys is reviewed in this paper...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 1126-1137, October 15–18, 2024,
... NICKEL-BASED ALLOYS FOR HIGH TEMPERATURE MOLTEN CHLORIDE SALT REACTOR STRUCTURAL APPLICATIONS N. Naveen Kumar,1 Sonali Ravikumar,1 Boateng Twum Donkor,2 Jie Song,3 Vishal Soni,1 Abhishek Sharma,1 Sriswaroop Dasari,4 Gopal B. Viswanathan,5 Harjot Singh,6 Qinyun Chen,7 Rajarshi Banerjee,1 Matthew...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 984-993, October 15–18, 2024,
..., but due to the lack of observable DRX, creating a threshold for DRX grain size, grain aspect ratio, and GB density is not possible. Future work will aim to optimize characterization criteria based on a Ni-Cr weld with large presence of DRX. INTRODUCTION High chromium nickel-based alloys and filler metals...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 1025-1037, October 22–25, 2013,
...) boiler, which is the latest boiler design, currently under development. As with all high nickel alloys, welding of alloy 740H can be very challenging, even to an experienced welder. Weldability challenges are compounded when considering that the alloy may be used in steam headers, where critical, thick...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 888-899, October 11–14, 2016,
... of this paper was to investigate the corrosion resistance of Ni-base alloys to supercritical CO2 under realistic stress conditions, and to compare the results with those of lower Ni content alloys. . EXPERIMENTAL High temperature nickel alloys with the mill certificate compositions given in Table 1, were...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 60-73, October 22–25, 2013,
... temperature requires that the materials for the boiler pressure parts and steam turbine be upgraded to high-nickel alloys that are more expensive than alloys typically used in existing PC units. This paper explores the economics of A-USC units operating between 595°C and 760°C (1100°F to 1400°F) with no CO 2...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1036-1047, October 21–24, 2019,
... will be compared for INCONEL filler metals 72, 72M, 625 and 622. boilers cladding corrosion resistance erosion resistance fossil-fueled boiler tubing Inconel filler metals nickel-chromium alloys superheaters water wall tubes Joint EPRI 123HiMAT International Conference on Advances in High...
Proceedings Papers

AM-EPRI2004, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fourth International Conference, 552-558, October 25–28, 2004,
... Abstract Improving power plant efficiency through supercritical steam pressures and very high steam temperatures up to 700°C and beyond is an effective approach to reducing fuel consumption and CO2 emissions. However, these extreme steam temperatures necessitate the use of nickel-base alloys...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 872-885, August 31–September 3, 2010,
... be used, ~675°C [1]. Nickel base superalloys are required in A-USC conditions that exist in both the boiler and the turbine due to high temperature creep strength requirements in these pressurized systems [3]. Austenitic alloys, both steel and nickel-base, generally possess sufficient creep strength...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1004-1013, October 21–24, 2019,
...-Cr alloys and austenitic Fe-Ni-Cr stainless steels [1-5]. Pressurised CO2 causes similar problems, but high nickel alloys appear to have promising resistance at high temperatures [6]. The desire to increase operating temperatures, and thereby thermal efficiency, implies the need for more creep...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1181-1192, October 21–24, 2019,
... power plants chemical composition finite element method mechanical properties microstructure nickel alloys turbine rotor forgings Joint EPRI 123HiMAT International Conference on Advances in High Temperature Materials October 21 24, 2019, Nagasaki, Japan J. Shingledecker, M. Takeyama, editors...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 131-136, October 11–14, 2016,
... Abstract Nickel-based Alloy 617B (DIN 2.4673) and Alloy C-263 (DIN 2.4650) with high creep strength and good fabricability are promising material candidates for the design of next generation coal-fired “Advanced Ultra-Super-Critical A-USC” power plants with advanced steam properties and thus...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 35-46, October 11–14, 2016,
... to be precipitation hardened, strengthened by the precipitation of gamma prime ' and/or gamma double prime when aged around 800°C. It is unlikely that solid solution strengthened Ni alloys will have the high temperature properties required. The successful production of heavy section nickel alloy castings...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 690-701, October 11–14, 2016,
... properties as well as definition of the castability and manufacturing methods is required. Ultimately all of these variables influence the final casting alloy selection for these high integrity components. Nickel alloys 282® and 263 were down selected from preliminary producibility criteria and creep rupture...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 886-899, August 31–September 3, 2010,
... on Advances in Materials for Fossil Power Plants, Santa Fe, August 31 September 3, 2010 2. F. H. Stott, D. S. Lin and G. C. Wood: The structure and mechanism of formation of the glaze oxide layers produced on nickel-based alloys during wear at high temperatures. Corrosion Science, 1973, Vol. 13, pp. 449...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 861-872, October 15–18, 2024,
... Abstract The advancement of additive manufacturing (AM) technology has heightened interest in producing components from nickel-based superalloys for high-temperature applications; however, developing high gamma prime (γ’) strengthened alloys suitable for AM at temperatures of 1000°C or higher...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 491-503, October 22–25, 2013,
... than their precipitation hardened counter parts, but possess good ductility and weldability. However, for plant operation above 700°C and up to 750°C, only precipitation strengthened Ni alloys look likely to have the required high temperature strength. The successful production of heavy section nickel...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 880-891, October 21–24, 2019,
...-temperature components, it can be argued that it is necessary to design high-temperature alloys that are tailored to the process. Nickel-based superalloys have emerged over the past decades to meet the material property requirements: strength, creep resistance, oxidation resistance, and so on. Solid-solution...