| TP304H奥氏体不锈钢锅炉管长期高温运行后的组织变化分析和研究 |
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| 引用本文： | 胡平,王志武,李正刚.TP304H奥氏体不锈钢锅炉管长期高温运行后的组织变化分析和研究[J].广东电力,2010,23(5):16-19,22. |
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| 作者姓名： | 胡平 王志武 李正刚 |
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| 作者单位： | 1. 广东电网公司电力科学研究院,广东,广州,510080
2. 武汉大学,湖北,武汉,430072 |
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| 摘 要： | 对TP304H钢管在电厂长期高温运行后的组织变化和析出相进行了研究和分析,所得结果表明在长期高温、高压的运行过程中,TP304H钢管组织特征发生明显变化,析出相增加,主要是M23C6型碳化物和σ相,并随着析出物的增加,奥氏体耐热钢的机械性能下降,直至被破坏。为此,指出高温是影响析出相形成的主要因素。
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| 关 键 词： | TP304H奥氏体不锈铜 析出相 M23G型碳化物 σ相 组织变化 |
Analysis and Study on Microstructure Variation of TP304H Austenitic Stainless Steel Boiler Tube after Long-term High Temperature Using |
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| HU Ping,WANG Zhi-wu,LI Zheng-gang.Analysis and Study on Microstructure Variation of TP304H Austenitic Stainless Steel Boiler Tube after Long-term High Temperature Using[J].Guangdong Electric Power,2010,23(5):16-19,22. |
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| Authors: | HU Ping WANG Zhi-wu LI Zheng-gang |
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| Affiliation: | 1. Electric Power Test ＆ Research Inst. of Guangdong Power Grid Corp., Guangzhou, Guangdong 510080, China; 2 Wuhan Univ. , Wuhan, Hubei 430072, China) |
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| Abstract: | Microstructure variation and precipitate phase of TP304H steel tube after long-term high temperature using in power plant was investigated. The results showed that during long-term high temperature/pressure operation, TP304H steel tube underwent notable microstructure variation; the carbide M23 C6 and σ phase separated out; with the increase of precipitate, the mechanical performance of austenitic heat-resistant steel deteriorated until being destructed. It is indicated that high temperature is the major factor for precipitate phase to form. |
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| Keywords: | TP304H austenitic stainless steel precipitate phase M23C6 carbide σ phase microstructure variation |
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