| 高温服役后TP347HFG钢的组织与性能 |
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| 引用本文： | 宋涛,王志武.高温服役后TP347HFG钢的组织与性能[J].金属热处理,2020,45(4):60-62. |
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| 作者姓名： | 宋涛 王志武 |
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| 作者单位： | 1. 湖北大学知行学院 机械与自动化学院, 湖北 武汉 430011;2. 武汉大学 动力与机械学院, 湖北 武汉 430072 |
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| 摘 要： | 利用金相显微镜、SEM、EDS和万能试验机分析了过热器管TP347HFG钢高温运行1.2×104 h和7.5×104 h后的组织与性能。结果表明,高温服役1.2×104 h和7.5×104 h后,TP347HFG钢仍保持明显的孪晶特征,析出的NbC有利于保持材料的组织稳定性。TP347HFG钢高温服役后力学性能能够保持稳定,随服役时间增加,强度增加而塑性变化不大。
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| 关 键 词： | TP347HFG钢 高温服役 组织 析出相 力学性能 |
| 收稿时间： | 2019-09-25 |
Microstructure and properties of TP347HFG steel after high temperature service |
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| Song Tao,Wang Zhiwu.Microstructure and properties of TP347HFG steel after high temperature service[J].Heat Treatment of Metals,2020,45(4):60-62. |
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| Authors: | Song Tao Wang Zhiwu |
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| Affiliation: | 1. College of Machinery and Automation, Zhixing College of Hubei University, Wuhan Hubei 430011, China; 2. School of Power and Mechanical Engineering, Wuhan University, Wuhan Hubei 430072, China |
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| Abstract: | The microstructure and properties of superheater tube made of TP347HFG steel after running for 1.2×104 h and 7.5×104 h at high temperature was analyzed by means of metallographic microscope, SEM, EDS and universal testing machine. The results show that the TP347HFG steel after service for 1.2×104 h and 7.5×104 h at high temperature can still maintain obvious twin characteristics, the NbC precipitated is conducive to maintaining the structural stability of the material. The mechanical properties of the material can remain stable after service at high temperature, the strength increased with the serviced time extend while the plasticity changed little. |
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| Keywords: | TP347HFG steel high temperature service microstructure precipitates mechanical properties |
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