| INTRODUCTION TO INCONEL ALLOY 740: AN ALLOY DESIGNED FOR SUPERHEATER TUBING IN COAL-FIRED ULTRA SUPERCRITICAL BOILERS |
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| 作者姓名： | S.J. Patel |
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| 作者单位： | Special Metals |
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| 摘 要： | 1. IntroductionW hile w orldw ide environm entalrestrictionsare requiring pow ercom paniesto reduce SO x,N O x andCO 2 em issions, econom ic pressuresare sim ultaneously necessitating im provem entsin the therm aleffi-ciency ofallcoal-fired plants. A ddin…
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INTRODUCTION TO INCONEL ALLOY 740: AN ALLOY DESIGNED FOR SUPERHEATER TUBING IN COAL-FIRED ULTRA SUPERCRITICAL BOILERS |
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| S.J. Patel.INTRODUCTION TO INCONEL ALLOY 740: AN ALLOY DESIGNED FOR SUPERHEATER TUBING IN COAL-FIRED ULTRA SUPERCRITICAL BOILERS[J].Acta Metallurgica Sinica(English Letters),2005,18(4). |
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| Authors: | SJ Patel Special Metals Corporation Huntington WV USA |
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| Affiliation: | S.J. Patel Special Metals Corporation,Huntington,WV 25705,USA |
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| Abstract: | Chinese utilities as well as those worldwide are facing increased demand for additional electricity, reduced plant emissions and greater efficiency. To meet this challenge will require increasing boiler temperature, pressure and coal ash corrosion resistance of the materials of boiler construction of future coal-fired boilers. A new nickel-based tube alloy, INCONELR alloy 740, is described aiming at meeting this challenge. Emphasis will be on describing the alloy's mechanical properties, coal-ash and steam corrosion resistance. Microstructural stability as a function of temperature and time is addressed as well as some of the early methodology employed to arrive at the current chemical composition. |
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| Keywords: | ultrasupercritical boiler tubing INCONEL coal-fired |
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