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Journal articles on the topic 'Advanced Ultra Supercritical'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Holcomb, Gordon R. "Steam Oxidation of Advanced Steam Turbine Alloys." Materials Science Forum 595-598 (September 2008): 299–306. http://dx.doi.org/10.4028/www.scientific.net/msf.595-598.299.

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Power generation from coal using ultra supercritical steam results in improved fuel efficiency and decreased greenhouse gas emissions. Results of ongoing research into the oxidation of candidate nickel-base alloys for ultra supercritical steam turbines are presented. Exposure conditions range from moist air at atmospheric pressure (650°C to 800°C) to steam at 34.5 MPa (650°C to 760°C). Parabolic scale growth coupled with internal oxidation and reactive evaporation of chromia are the primary corrosion mechanisms.

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2

Xie, Xi Shan, Cheng Yu Chi, Shuang Qun Zhao, Jian Xin Dong, and Fu Sheng Lin. "Superalloys and the Development of Advanced Ultra-Supercritical Power Plants." Materials Science Forum 747-748 (February 2013): 594–603. http://dx.doi.org/10.4028/www.scientific.net/msf.747-748.594.

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A 700 advanced ultra-supercritical (A-USC) power plant technology project was initiated in China in the year of 2011. The highest temperature components in A-USC boiler are superheater and reheater tubes. The fire-side metal temperature can reach 750 (even higher). Based on the very long time service (30-40 years) these important high temperature tubes require 105h long time stress rupture strength higher than 100MPa and the corrosion/oxidation layer loss less than 2mm for 2×105h. The highest temperature components in 700 steam turbine are the buckets of different stages and require very long service time. At this severe condition only superalloys can fulfill these unusual requirements. This paper reviewed Fe-Ni and Ni-base superalloys from the view point of structure stability and long term mechanical properties and corrosion/oxidation resistance for 700 A-USC power plant materials selection.

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3

Maile, K. "Qualification of Ni-Based Alloys for Advanced Ultra Supercritical Plants." Procedia Engineering 55 (2013): 214–20. http://dx.doi.org/10.1016/j.proeng.2013.03.245.

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4

Ma, Da Fu, and Xiao Hong Hao. "Status and Prospect of Large-Scale Circulating Fluidized Bed Boiler." Advanced Materials Research 516-517 (May 2012): 444–47. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.444.

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The paper is focused on the present situation and the development of large-scale circulating fluidized bed (CFB) boilers. Several developed technology of CFB such as supercritical and ultra supercritical pressure CFB boilers for power plants, oxy-fuel CFB boiler for CO2 capture and high-density circulating fluidized bed gasifier for advanced IGCC/IGFC are introduced in this paper.

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5

łukowicz, Henryk, Sławomir Dykas, Sebastian Rulik, and Katarzyna Stępczyńska. "Thermodynamic and economic analysis of a 900 MW ultra-supercritical power unit." Archives of Thermodynamics 32, no. 3 (December 1, 2011): 231–44. http://dx.doi.org/10.2478/v10173-011-0025-1.

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Thermodynamic and economic analysis of a 900 MW ultra-supercritical power unit The paper presents a thermal-economic analysis of different variants of a hard coal-fired 900 MW ultra-supercritical power unit. The aim of the study was to determine the effect of the parameters of live and reheated steam on the basic thermodynamic and economic indices of the thermal cycle. The subject of the study was the cycle configuration proposed as the "initial thermal cycle structure" during the completion of the project "Advanced Technologies for Energy Generation" with the live and reheated steam parameters of 650/670 °C. At the same time, a new concept of a thermal cycle for ultra-supercritical parameters with live and reheated steam temperature of 700/720 °C was suggested. The analysis of the ultra-supercritical unit concerned a variant with a single and double steam reheat. All solutions presented in the paper were subject to a detailed thermodynamic analysis, as well as an economic one which also included CO2emissions charges. The conducted economic analysis made it possible to determine the maximum value of investment expenditures at which given solutions are profitable.

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6

Holcomb, Gordon R. "High Pressure Steam Oxidation of Alloys for Advanced Ultra-Supercritical Conditions." Oxidation of Metals 82, no. 3-4 (August 5, 2014): 271–95. http://dx.doi.org/10.1007/s11085-014-9491-6.

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7

Li, Zhi, Zhong Min Li, and Zhan Liang Yan. "Energy and Exergy Analysis for Three Type 500MW Steam Power Plants." Applied Mechanics and Materials 148-149 (December 2011): 1131–36. http://dx.doi.org/10.4028/www.scientific.net/amm.148-149.1131.

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The paper shows the comparison of energy and exergy analysis of thermal power plants based on advanced steam parameters in China climatic conditions. The research contains coal-based thermal power plants using sub-critical, super-critical, and ultra-supercritical steam conditions. The design configurations of 500 MW unit size were considered. The research contains the effect of condenser pressure on plant and exergy efficiency. The effect of high grade coal on performance parameters as compared to typical China low grade coal was also studied. The major exergy loss took place in coal combustion followed by the steam generator. Due to condenser pressure limitation, the maximum possible overall energy efficiency was found to be about 44.4% with the ultra-supercritical power plant. Installing coal-based thermal power plants based on advanced steam parameters in China will be a prospective option aiding energy self-sufficiency.

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8

Łukowicz, Henryk, Sławomir Dykas, Katarzyna Stępczyńska, and Sebastian Rulik. "The effect of the internal reheat application on the efficiency of the 900 MW ultra-supercritical coal-fired power unit." Archives of Thermodynamics 32, no. 3 (December 1, 2011): 127–44. http://dx.doi.org/10.2478/v10173-011-0018-0.

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The effect of the internal reheat application on the efficiency of the 900 MW ultra-supercritical coal-fired power unit The paper presents a thermal-economic analysis of a 900 MW coal-fired power unit for ultra-supercritical parameters with internal steam reheat. The subject of the study was the cycle proposed as the "initial thermal cycle structure" during the completion of the project "Advanced Technologies for Energy Generation" with the steam parameters of 650/670 °C/30 MPa. Two configurations of internal reheat were analysed: with a four- and seven-section exchanger. The effect of reheat on the operation of the power unit under a partial load was also analysed, and preliminary calculations of the heat exchange area of the internal reheat were made.

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9

Sarkar, Aritra, and A. Nagesha. "Elevated temperature fatigue behaviour of structural materials for advanced ultra supercritical application." Materials at High Temperatures 36, no. 6 (July 4, 2019): 471–78. http://dx.doi.org/10.1080/09603409.2019.1638604.

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10

Stępczyńska-Drygas, Katarzyna, Henryk Łukowicz, and Sławomir Dykas. "Calculation of an advanced ultra-supercritical power unit with CO2 capture installation." Energy Conversion and Management 74 (October 2013): 201–8. http://dx.doi.org/10.1016/j.enconman.2013.04.045.

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11

Kowalczyk, Łukasz, Witold Elsner, Paweł Niegodajew, and Maciej Marek. "Gradient-free methods applied to optimisation of advanced ultra-supercritical power plant." Applied Thermal Engineering 96 (March 2016): 200–208. http://dx.doi.org/10.1016/j.applthermaleng.2015.11.091.

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12

Zhi-gang, Hua, Hu Guang-yu, Wu Zhi-gong, Cui Xi, and Lu Jian-hong. "Optimal Control System Based on Advanced Control Technology in Ultra Supercritical Power Units." Information Technology Journal 12, no. 17 (August 15, 2013): 4004–11. http://dx.doi.org/10.3923/itj.2013.4004.4011.

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13

Li, Huifang, Fei Ye, Jie Zhao, Tieshan Cao, Fanghong Xu, Qingshuang Xu, Yan Wang, Congqian Cheng, and Xiaohua Min. "Misorientation dependence of grain boundary migration in advanced ultra-supercritical Ni-based superalloy." Materials Science and Technology 34, no. 5 (December 12, 2017): 607–11. http://dx.doi.org/10.1080/02670836.2017.1410929.

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14

Boretti, Alberto, and Stefania Castelletto. "High-temperature molten-salt thermal energy storage and advanced-Ultra-supercritical power cycles." Journal of Energy Storage 42 (October 2021): 103143. http://dx.doi.org/10.1016/j.est.2021.103143.

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15

Zielińska-Lipiec, Anna, Aleksandra Czyrska-Filemonowicz, and Tomasz Kozieł. "VM12 Steel for Advanced Power Generation Plants – Metrology of the Precipitates by Electron Microscopy." Solid State Phenomena 186 (March 2012): 283–86. http://dx.doi.org/10.4028/www.scientific.net/ssp.186.283.

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A new high chromium martensitic steel, VM12, was recently developed for advanced coal-fired ultra-supercritical steam power plants. A very important factor in maintaining high creep resistance during service exposure is its stable microstructure, in particular high dispersion particle strengthening, which slow down the recovery and softening processes of the matrix. Quantitative characterisation of the precipitates in the VM12 steel as received condition and after creep tests up to about 30000 h at 625 °C using TEM was carried out.

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16

Lee, Yoonha, Soonyoung Han, Sungwoo Jang, Wonjae Kim, Hea-Jin Choi, and Seung-Kyum Choi. "Multidisciplinary materials and geometry optimization of superheater tubes for advanced ultra-supercritical power boilers." Journal of Mechanical Science and Technology 32, no. 7 (July 2018): 3359–69. http://dx.doi.org/10.1007/s12206-018-0639-1.

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17

Hu, Xiaobing, Jincheng Wang, Yanyan Wang, Junjie Li, Zhijun Wang, Yingying Dang, and Yuefeng Gu. "Two-way design of alloys for advanced ultra supercritical plants based on machine learning." Computational Materials Science 155 (December 2018): 331–39. http://dx.doi.org/10.1016/j.commatsci.2018.09.003.

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18

Bhaduri, A. K., Shaju K. Albert, A. Nagesha, A. Moitra, Utpal Borah, G. V. Prasad Reddy, K. Laha, Kulvir Singh, and A. K. Das. "Development and Qualification of Materials for Indian Advanced Ultra-Supercritical Coal-Fired Power Plant." Materials Performance and Characterization 11, no. 2 (July 23, 2021): 20200189. http://dx.doi.org/10.1520/mpc20200189.

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19

Li, Shan Shan, Zheng Yu Liang, and He Ren. "Research and Application of Intelligent Control Technology for Main Steam Temperature Regulation in Ultra-Supercritical Thermal Power Plants." Applied Mechanics and Materials 448-453 (October 2013): 3240–44. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.3240.

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Main steam temperature regulation is one of the most demanded control loop in modulating control system of thermal power plant. According to the characteristics of main steam temperature, an intelligent control technology has been proposed. To eliminate lag and inertia in main steam temperature regulation process, the intelligent control technology integrates several advanced algorithms. The application effects in several ultra-supercritical thermal power plants prove that the control technology has outstanding robustness and excellent adaptability in both variable load and steady state condition.

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20

Xu, Qingshuang, Tieshan Cao, Fei Ye, Fanghong Xu, Huifang Li, Xudong Fang, and Jie Zhao. "Creep-induced microstructural evolution in a nickel-based superalloy designed for advanced ultra-supercritical boilers." Materials Characterization 139 (May 2018): 311–18. http://dx.doi.org/10.1016/j.matchar.2018.03.008.

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21

Li, Huifang, Fei Ye, Jie Zhao, Tieshan Cao, Fanghong Xu, Qingshuang Xu, Yan Wang, Congqian Cheng, and Xiaohua Min. "Grain boundary migration-induced directional coarsening of the γʹ phase in advanced ultra-supercritical superalloy." Materials Science and Engineering: A 714 (January 2018): 172–78. http://dx.doi.org/10.1016/j.msea.2017.12.089.

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22

Pavan, A. H. V., K. S. N. Vikrant, R. Ravibharath, and Kulvir Singh. "Development and evaluation of SUS 304H — IN 617 welds for advanced ultra supercritical boiler applications." Materials Science and Engineering: A 642 (August 2015): 32–41. http://dx.doi.org/10.1016/j.msea.2015.06.065.

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23

Speicher, Magdalena, Daniel Hueggenberg, Andreas Klenk, Stefan Zickler, and Klaus Metzger. "Materials for Advanced Ultra-Supercritical Fossil-Fuel Power Plants: Materials Properties, Microstructure, and Component Behavior." Energy Technology 4, no. 1 (December 18, 2015): 187–92. http://dx.doi.org/10.1002/ente.201500311.

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24

Skorobogatykh, Vladimir, Izabella Schenkova, Pavel Kozlov, Maria Nakhabina, and Andrey Rogalev. "Martensitic and austenitic creep resistant steels for application in advanced ultra-supercritical thermal power plants." Contemporary Engineering Sciences 8 (2015): 1371–82. http://dx.doi.org/10.12988/ces.2015.58242.

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25

Yi, Yong-Sun, Yutaka Watanabe, Tatsuo Kondo, Hiroshi Kimura, and Minoru Sato. "Oxidation Rate of Advanced Heat-Resistant Steels for Ultra-Supercritical Boilers in Pressurized Superheated Steam." Journal of Pressure Vessel Technology 123, no. 3 (February 28, 2001): 391–97. http://dx.doi.org/10.1115/1.1373656.

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Oxidation kinetics of recently developed ferritic heat-resistant steels, HCM12A, NF616, and HCM2S, were investigated in a superheated steam to evaluate the effects of chemical composition of the steels, testing temperature (560–700°C), steam pressure (1–10 MPa), and degrees of microstructural evolution by aging on oxidation. The contribution of alloyed Cr to oxidation resistance was pronounced above 600°C, while no material dependency was found at 600°C or lower. The apparent activation energy of the oxidation rate clearly changed at around 600°C for NF616 and HCM12A. In contrast, HCM2S showed single activation energy over the range of temperatures. Although temperature and chemical composition were the major factors, steam pressure also showed a clear negative effect on the oxidation rate in the lower temperature range, 570–600°C.

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26

Fukuda, Yuji. "Development of Advanced Ultra Supercritical Fossil Power Plants in Japan: Materials and High Temperature Corrosion Properties." Materials Science Forum 696 (September 2011): 236–41. http://dx.doi.org/10.4028/www.scientific.net/msf.696.236.

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Japanese government project of the A-USC technology was started in 2008 August. 700°C class boiler, turbine and valve technologies, which include high temperature material technology, will be developed. This report provides the present state of the art and technical background of this development effort for A-USC in Japan, especially focusing the high temperature corrosion and the steam oxidation behavior of available and developmental materials for boiler.

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27

Fan, Haojie, Zhongxiao Zhang, Jiancong Dong, and Wei Xu. "China’s R&D of advanced ultra-supercritical coal-fired power generation for addressing climate change." Thermal Science and Engineering Progress 5 (March 2018): 364–71. http://dx.doi.org/10.1016/j.tsep.2018.01.007.

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28

Peng, Ng Guat, Badrol Ahmad, Mohd Razali Muhamad, and Mohd Ahadlin. "Microstructure Characterization for P92 Steels Subjected to Short Term Overheating above Critical Transformation Temperatures." Applied Mechanics and Materials 625 (September 2014): 114–17. http://dx.doi.org/10.4028/www.scientific.net/amm.625.114.

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Advanced ferritic steels containing 9 wt% Cr are widely used for nuclear and fossil energy applications, especially in the construction of supercritical and ultra supercritical boiler components. The microstructure of the as supplied 92 materials consists of a tempered martensite matrix, a fine dispersion of intergranular chromium rich M23C6 precipitates and intragranular carbonitrides MX particles rich in V and Nb. This steel requires post weld heat treatment (PWHT) to produce a tempered microstructure after welding to develop excellent creep strength for high temperature service. The short excursion to high temperature beyond Ac1 and Ac3 would have resulted in the formation of deleterious phases, for example, soft α-ferrite which has a poor creep strength and hard martensite which has a low toughness. In this study, the microstructure evolution as a result of short exposure to various peak temperatures above Ac1 and Ac3 is analyzed. Creep rupture database for overheated condition will be established after the completion of uninterrupted creep testing.

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29

Zhong, Z. H., Y. F. Gu, Y. Yuan, and Z. Shi. "A new wrought Ni–Fe-base superalloy for advanced ultra-supercritical power plant applications beyond 700°C." Materials Letters 109 (October 2013): 38–41. http://dx.doi.org/10.1016/j.matlet.2013.07.060.

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30

Pavan, A. H. V., K. S. N. Vikrant, R. Ravibharath, and Kulvir Singh. "Corrigendum to “Development and evaluation of SUS 304H – IN 617 welds for advanced ultra supercritical boiler applications”." Materials Science and Engineering: A 651 (January 2016): 165–66. http://dx.doi.org/10.1016/j.msea.2015.10.049.

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31

Zhang, Jian, Zhongxiao Zhang, Haojie Fan, Xueli Ge, Jiancong Dong, and Wei Xu. "Experimental study of heat transfer characteristics in a coal-fired test facility under advanced ultra-supercritical conditions." Fuel 267 (May 2020): 117255. http://dx.doi.org/10.1016/j.fuel.2020.117255.

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32

Tramošljika, Branimir, Paolo Blecich, Igor Bonefačić, and Vladimir Glažar. "Advanced Ultra-Supercritical Coal-Fired Power Plant with Post-Combustion Carbon Capture: Analysis of Electricity Penalty and CO2 Emission Reduction." Sustainability 13, no. 2 (January 15, 2021): 801. http://dx.doi.org/10.3390/su13020801.

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This article presents the performance analysis of a 700 MW future planned advanced ultra-supercritical (A-USC) coal-fired power plant fitted with post-combustion carbon capture and storage (CCS) technology. The reference A-USC unit without CCS achieves a net efficiency of 47.6% with CO2 emissions of 700 kgCO2/MWh. Relatively to subcritical units, the net efficiency of the A-USC is 8%-pts higher while CO2 emissions are 16.5% lower. For a CO2 removal rate of 90%, the net efficiency of the CCS integrated A-USC unit is 36.8%. The resulting net efficiency loss is 10.8%-pts and the electricity output penalty is 362.3 kWhel/tCO2 for present state CCS technology. The study continues with the assessment of interface quantities between the capture unit and the steam cycle affecting the performance of the A-USC. Improved CO2 absorbents could alleviate the net efficiency loss by 2–3%-pts, and enhanced CO2 compression strategies and advanced heat integration could further reduce the efficiency loss by 0.5–1.2%-pts and 0.4–0.6%-pts, respectively. The total efficiency gain from CCS technology upgrades is estimated at 3.6%-pts, thus bringing down the net efficiency loss to 7.2%-pts and the electricity output penalty to 241.7 kWhel/tCO2.

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33

Hao, Xian Chao, Long Zhang, Xiu Juan Zhao, Tian Liang, Ying Che Ma, and Kui Liu. "Microstructure and Mechanical Properties of a New Ni-Cr-Fe-W-Al Alloy for Advanced Ultra-Supercritical Power Plants." Materials Science Forum 816 (April 2015): 586–93. http://dx.doi.org/10.4028/www.scientific.net/msf.816.586.

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Optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermodynamic calculation were used to study the phase stability and precipitation in a Ni-Cr-Fe-W-Al alloy. Mechanical properties were also studied. The major precipitates after standard heat treatment or prolonged aging at 725 oC and 800 oC were M23C6 and γ′. M23C6 precipitated intergranularly. P-phase was not detected after thermal exposure, which was different from the results of thermodynamic calculation. The average diameter of γ′ increased with the increasing exposure temperature and time, and could be depicted by the LSW theory. Specimens in solution-annealed condition exhibited excellent ductility. During the prolonged exposure at 725 oC, tensile strength and ductility at room and elevated temperatures kept well, which means this alloy possessed good microstructural stability after a long time exposure.

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34

Jiang, He, Jianxin Dong, Maicang Zhang, Lei Zheng, and Zhihao Yao. "Oxidation Behavior and Mechanism of Inconel 740H Alloy for Advanced Ultra-supercritical Power Plants Between 1050 and 1170 °C." Oxidation of Metals 84, no. 1-2 (February 22, 2015): 61–72. http://dx.doi.org/10.1007/s11085-015-9543-6.

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35

Guan, Shuai, and Chuan-Yong Cui. "A Newly Developed Wrought Ni–Fe–Cr-based Superalloy for Advanced Ultra-Supercritical Power Plant Applications Beyond 700 °C." Acta Metallurgica Sinica (English Letters) 28, no. 9 (July 21, 2015): 1083–88. http://dx.doi.org/10.1007/s40195-015-0298-5.

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36

Abe, Fujio, H. Kutsumi, H. Haruyama, and H. Okubo. "Improvement of oxidation resistance of 9 mass% chromium steel for advanced-ultra supercritical power plant boilers by pre-oxidation treatment." Corrosion Science 114 (January 2017): 1–9. http://dx.doi.org/10.1016/j.corsci.2016.10.008.

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37

Guo, Xiaofeng, Wei Sun, Adib Becker, Andy Morris, Martyn Pavier, Peter Flewitt, Michael Tierney, and Christopher Wales. "Thermal and stress analyses of a novel coated steam dual pipe system for use in advanced ultra-supercritical power plant." International Journal of Pressure Vessels and Piping 176 (September 2019): 103933. http://dx.doi.org/10.1016/j.ijpvp.2019.103933.

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38

Guo, X. F., A. Benaarbia, W. Sun, A. Becker, A. Morris, M. Pavier, P. Flewitt, M. Tierney, and C. Wales. "Optimisation and thermo-mechanical analysis of a coated steam dual pipe system for use in advanced ultra-supercritical power plant." International Journal of Pressure Vessels and Piping 186 (September 2020): 104157. http://dx.doi.org/10.1016/j.ijpvp.2020.104157.

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39

Zhao, Xinbao, Yingying Dang, Hongfei Yin, Jintao Lu, Yong Yuan, Zhen Yang, Jingbo Yan, and Yuefeng Gu. "Effect of heat treatment on the microstructure of a Ni–Fe based superalloy for advanced ultra-supercritical power plant applications." Progress in Natural Science: Materials International 26, no. 2 (April 2016): 204–9. http://dx.doi.org/10.1016/j.pnsc.2016.03.013.

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40

Yuan, Y., Z. H. Zhong, Z. S. Yu, H. F. Yin, Y. Y. Dang, X. B. Zhao, Z. Yang, J. T. Lu, J. B. Yan, and Y. Gu. "Tensile and creep deformation of a newly developed Ni-Fe-based superalloy for 700 °C advanced ultra-supercritical boiler applications." Metals and Materials International 21, no. 4 (June 18, 2015): 659–65. http://dx.doi.org/10.1007/s12540-015-4627-z.

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41

Kasl, Josef, and Dagmar Jandová. "Metallography of CB2 Steel Used for Cast Turbine Components." Materials Science Forum 782 (April 2014): 179–85. http://dx.doi.org/10.4028/www.scientific.net/msf.782.179.

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Steel CB2 developed in frame of the COST actions belongs to the most promising steel for production of cast turbine components working at ultra-supercritical steam conditions. VZÚ Plzeň has participated on assessment of original trial melt CB2 as well as on testing of samples coming from one of pilot valves produced of steel CB2 in full scale. Recently VZÚ Plzeň has cooperated with Doosan Škoda Power in development of weld processes of advanced power energy steels including steel CB2. This contribution deals with a comparison of properties of the steel CB2 produced by four various steelmakers from point of view of their microstructure in relation with their mechanical and creep resistant properties. Evaluation is focused on chemical heterogeneity, porosity, content of non-metallic inclusions, in particular on an occurrence of coarse NB, microstructure and substructure using methods of light and electron microscopy.

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42

Xu, Yaxin, Jintao Lu, Wenya Li, Zhen Yang, and Yuefeng Gu. "Chromium-Dependent Effect on Oxidation Behavior of Ni-Fe-Based Superalloy for Ultra-Supercritical Steam Turbine Applications: Influence of Temperature and Pure Steam." Corrosion 76, no. 10 (July 14, 2020): 941–53. http://dx.doi.org/10.5006/3534.

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Three Ni-Fe-based superalloys with 16 wt% to 18 wt% Cr were designed for steam turbine components in advanced ultra-supercritical power plants. The oxidation behavior of these alloys was evaluated at 750°C to 850°C for 1,000 h to explore the chromium-dependent effect on the oxidation behavior in static air and pure steam. The results reveal that the oxidation rate of the alloys decreased as the Cr content increased in both the air and steam environment. However, such a beneficial effect of Cr was found to be temperature-dependent, which became less significant when the exposure temperature increased from 750°C to 850°C, leading to the formation of an additional NiFe2O4 layer and severe internal Al2O3/TiO2 oxide. The impact of temperature and pure steam on the oxidation resistance of the alloys were discussed based on the calculation of critical Cr concentration.

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43

Sivaji, Karna, and Gandham Phanikumar. "Microstructure and Precipitation Studies of Gas Tungsten Arc Welded Haynes 282 Superalloy." Materials Science Forum 1016 (January 2021): 666–71. http://dx.doi.org/10.4028/www.scientific.net/msf.1016.666.

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Improvement in efficiency of energy conversion requires the use of high temperature materials in thermal power plants. This has led to the development of new γ' strengthened nickel based superalloy (Haynes 282). This alloy is used for advanced ultra-supercritical (AUSC) plants which are operated under the service conditions of 760 oC temperature and 35 MPa pressure. Bead on plate gas tungsten arc welding experiments were done with optimized process parameters. Thermal cycle in heat affected zone was measured by K-type thermocouple attached to a data acquisition system. Welding simulations were carried out in simufact welding® by using experimental parameters and thermal field was established. Base metal is characterized with γ solid solution and randomly distributed MC carbides. SEM results showed that the carbides are of MC type. The carbide precipitate distribution correlates with the segregation pattern during solidification of the weld.

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44

Singh, R. K., J. K. Sahu, and S. Tarafder. "Strain rate effect on cyclic deformation behaviour of advanced ultra-supercritical boiler grade wrought Ni-based superalloy IN740H at 760 °C." Materials Science and Engineering: A 658 (March 2016): 272–79. http://dx.doi.org/10.1016/j.msea.2016.02.007.

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45

Sun, F., Y. F. Gu, J. B. Yan, Z. H. Zhong, and M. Yuyama. "Phenomenological and microstructural analysis of intermediate temperatures creep in a Ni–Fe-based alloy for advanced ultra-supercritical fossil power plants." Acta Materialia 102 (January 2016): 70–78. http://dx.doi.org/10.1016/j.actamat.2015.09.006.

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46

Hari, P. R., N. Arivazhagan, M. Nageswara Rao, and A. H. V. Pavan. "Hot Corrosion Studies on Alloy 617 OCC in the Context of Its Use in Advanced Ultra-Supercritical (A-USC) Power Plants." Transactions of the Indian Institute of Metals 70, no. 3 (February 21, 2017): 775–81. http://dx.doi.org/10.1007/s12666-017-1079-9.

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47

Ge, Xueli, Zhongxiao Zhang, Haojie Fan, Jian Zhang, and Degui Bi. "Unsteady-state heat transfer characteristics of spiral water wall tube in advanced-ultra-supercritical boilers from experiments and distributed parameter model." Energy 189 (December 2019): 116158. http://dx.doi.org/10.1016/j.energy.2019.116158.

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48

Lu, Jintao, Zhen Yang, Songqian Xu, Haiping Zhao, and Y. Gu. "Oxidation Behaviors of Inconel 740H in Air and Dynamic Steam." High Temperature Materials and Processes 35, no. 7 (August 1, 2016): 697–704. http://dx.doi.org/10.1515/htmp-2014-0242.

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Abstract:

AbstractInconel 740H alloy is a candidate material for 700°C advanced ultra-supercritical (A-USC) coal-fired power plants application as superheater/reheater tube. In this work, oxidation behavior of Inconel 740H alloy was studied in static air at 750°C and 850°C, and in dynamic pure steam at 750°C, respectively. The alloy was oxidized approximately following a parabolic law in three test environment. In the static air, the oxidation rate at 850°C was about 50 times of that at the 750°C. More NiCrMn spinal and TiO2 were detected after oxidation at 850°C. Cr2O3, however, was the main oxidation product at 750°C. In the pure steam, Cr2O3 was still the main oxidation product. The oxidation rate was about 2.6 times of that in static air, but the surface roughness was much smaller and edges of oxide particles were more blurred. There was no evidence of cracks or spallation in three test environments.

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Xu, Ya-Xin, Jin-Tao Lu, Jin-Yang Huang, Wen-Ya Li, Jing-Bo Yan, Xia-Wei Yang, and Lei Yao. "Impact of Iron and Chromium on Coal Ash Corrosion Behavior of Ni-Cr-Co Based Alloy for Advanced Ultra-Supercritical Power Plants." CORROSION 74, no. 12 (December 2018): 1446–56. http://dx.doi.org/10.5006/2998.

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50

Singh, R. K., and J. K. Sahu. "Yield strength anomaly and dynamic strain ageing behaviour of recently developed advanced ultra-supercritical boiler grade wrought Ni-based superalloy IN 740H." Materials at High Temperatures 36, no. 3 (August 31, 2018): 220–31. http://dx.doi.org/10.1080/09603409.2018.1513675.

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