| 新型耐热钢HR3C在超超临界机组高温服役、25000h后的性能研究 |
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| 引用本文： | 殷尊,蔡晖,刘鸿国. 新型耐热钢HR3C在超超临界机组高温服役、25000h后的性能研究[J]. 中国电机工程学报, 2011, 31(29) |
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| 作者姓名： | 殷尊 蔡晖 刘鸿国 |
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| 作者单位： | 1. 西安热工研究院有限公司,陕西省西安市,710032
2. 华能玉环电厂,浙江省台州市,317604 |
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| 摘 要： | 通过对材料性能、金相、扫描电镜（scanning electron microscope，SEM）、能谱（energy disper sespectrum，EDS）、氧化皮、碳化物萃取、透射电镜（transmission electron microscope，TEM）等的分析，对在超超临界机组运行5400和25000h的新型奥氏体耐热钢HR3C进行老化研究，经研究表明HR3C运行25000h后性能的变化主要表现为向火侧室温抗拉强度上升4％，屈服强度下降10％；650℃拉伸性能略有下降；压扁时有脆化，硬度明显提高，表明已发生时效强化；内外壁氧化皮形成致密的Cr2O3层；组织无明显老化，析出物主要为Z相、M23C6和M6C型，碳化物沿晶界较明显析出；运行25000h后析出的碳化物中M6C和M23C6含量明显高于运行5400h后析出的含量，表明已有M23C6型碳化物向M6C型碳化物过渡。
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| 关 键 词： | 超超临界 新型奥氏体 HR3C 性能 析出物 |
Performance on New Heat-resistant Steel HR3C in the Ultra-supercritical Units After Service at High Temperature for 25000 Hours |
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| YIN Zun,CAI Hui,LIU Hongguo. Performance on New Heat-resistant Steel HR3C in the Ultra-supercritical Units After Service at High Temperature for 25000 Hours[J]. Proceedings of the CSEE, 2011, 31(29) |
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| Authors: | YIN Zun CAI Hui LIU Hongguo |
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| Affiliation: | YIN Zun1,CAI Hui1,LIU Hongguo2(1.Xi'an Thermal Power Research Institute,Xi'an 710032,Shaanxi Province,China,2.Huaneng Yuhuan Power Plant,Taizhou 317604,Zhejiang Province,China) |
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| Abstract: | Through the analysis of the performance,metallographic,scanning electron microscope(SEM),energy disperse spectrum(EDS),oxide,carbide extraction,and transmission electron microscope(TEM)methods,the aging research of the new austenitic heat-resistant steel HR3C was conducted in ultra-supercritical units after service for 5 400 hours and 25 000 hours.The research shows that after service for 25 000 hours the performance of HR3C changes: the main tensile strength increases by 4%,yield strength decreases by 10%;... |
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| Keywords: | ultra-supercritical units new austenite HR3C performance precipitate |
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