| REVIEW PAPER |
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| Research Progress of Austenitic Heat Resistant Steel Sanicro25 Used in Ultra Supercritical Unit |
| ZHU Chuanzhi1,2,YUAN Yong1,YIN Hongfei1,DANG Yingying1,ZHAO Xinbao1,YOU Caiyin2
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1 Xi’an Thermal Power Research Institute Co. Ltd., Xi’an 710032;
2 School of Materials Science and Technology, Xi’an University of Technology, Xi’an 710048 |
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Abstract Austenitic heat resistant steel Sanicro25 is a promising candidate for applications of super-heaters and re-heaters in 700 ℃ advanced ultra-supercritical power plants. This review briefly describes the chemical composition, microstructure and its evolution, mechanical properties, welding properties, steam oxidation and corrosion resistance of Sanicro25. The impact toughness of Sanicro25 decreases dramatically during long term thermal exposure, which may affect the safety of power plants. The future research directions on the performance improvement of the Sanicro25 are discussed.
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Published: 04 May 2018
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2017, Vol. 31 
