| Aging Precipitates and Strengthening Mechanism of T122 Boiler Steel |
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| 作者姓名： | Han-Sheng BAO Shi-chang CHENG Zheng-dong LIU Shu-ping TAN |
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| 作者单位： | 钢铁研究总院结构材料研究所 钢铁研究总院结构材料研究所 钢铁研究总院结构材料研究所 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | T122 steel has been used to produce superheater or reheater of ultra supercritical boilers. With the help of chemical phase extraction and microstructure characterization, the authors of the paper investigated the performance of aging precipitates of T122 steel, such as M23C6 carbide, Laves phase, MX phase and cu-rich phase, discussed the strengthening mechanism of the steel, and calculated athermal yield stress of lath substructure, dislocations and precipitates of the steel. It was found that lath substructure and dislocations dominate the strengthening attribution and precipitation hardening goes second to the strengthening attribution.
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| 关 键 词： | 锅炉再热器 时效析出 强化机制 强化钢 位错亚结构 Laves相 M23C6 化学物相 |
| 收稿时间： | 2009-3-24 |
Aging Precipitates and Strengthening Mechanism of T122 Boiler Steel |
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| Han-Sheng BAO Shi-chang CHENG Zheng-dong LIU Shu-ping TAN.Aging Precipitates and Strengthening Mechanism of T122 Boiler Steel[J].Journal of Iron and Steel Research,2010,17(2):67-73. |
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| Authors: | BAO Han-sheng CHENG Shi-chang LIU Zheng-dong TAN Shu-ping |
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| Affiliation: | [1]Institute of Structure Materials, Central Iron and Steel Research Institute, Beijing 100081, China [2]School of Astronautics, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China |
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| Abstract: | T122 steel has been used to produce superheater or reheater of ultra supercritical boilers. With the help of chemical phase extraction and microstructure characterization, the authors of the paper investigated the performance of aging precipitates of T122 steel, such as M23C6 carbide, Laves phase, MX phase and cu-rich phase, discussed the strengthening mechanism of the steel, and calculated athermal yield stress of lath substructure, dislocations and precipitates of the steel. It was found that lath substructure and dislocations dominate the strengthening attribution and precipitation hardening goes second to the strengthening attribution. |
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| Keywords: | T122 heat resistant steel strengthening precipitate substructure dislocation |
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