| HCM2S(T23)钢显微组织结构特征及强化机理分析 |
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| 引用本文： | 于在松,王弘喆,聂铭,周荣灿,唐丽英,张红军.HCM2S(T23)钢显微组织结构特征及强化机理分析[J].铸造技术,2011,32(4). |
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| 作者姓名： | 于在松 王弘喆 聂铭 周荣灿 唐丽英 张红军 |
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| 作者单位： | 1. 西安热工研究院有限公司,陕西西安,710032
2. 广东电网公司电力科学研究院,广东广州,510600 |
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| 摘 要： | 通过OM、TEM、SEM和EDS等方法对供货态、正火态和正火+回火态T23钢试样的显微组织结构进行了分析.通过对比不同状态T23钢显微组织结构特征,探讨了T23钢的强化机理.研究结果显示,正火态T23钢为粒状贝氏体组织,以固溶强化、M/A小岛的弥散强化,以及粒状贝氏体基体的晶界和亚结构的强化作用为主,同时微量B也起到-定程度的强化作用;正火+回火状态T23钢为回火粒状贝氏体组织,大部分M/A组元分解消失,沉淀相大量沉淀析出,第2相主要为M23C6和MX,回火不充分的情况下会有亚稳过渡相M3C和M7C3型碳化物存在,强化机理包括固溶强化、沉淀强化,以及贝氏体基体的晶界和亚结构等强化作用.
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| 关 键 词： | HCM2S(T23)钢 粒状贝氏体 M/A岛 强化机理 |
Microstructure and Strengthening Mechanisms of HCM2S(T23) Steel |
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| YU Zai-song,WANG Hong-zhe,NIE Ming,ZHOU Rong-can,TANG Li-ying,ZHANG Hong-jun.Microstructure and Strengthening Mechanisms of HCM2S(T23) Steel[J].Foundry Technology,2011,32(4). |
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| Authors: | YU Zai-song WANG Hong-zhe NIE Ming ZHOU Rong-can TANG Li-ying ZHANG Hong-jun |
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| Affiliation: | YU Zai-song1,WANG Hong-zhe1,NIE Ming2,ZHOU Rong-can1,TANG Li-ying1,ZHANG Hong-jun1(1.Xi'an Thermal Power Research Institute Co.,Ltd.,Xi'an 710032,China,2.Electric Power Research Inst.of Guangdong Power Grid Corp.Guangzhou 510600,China) |
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| Abstract: | Microstructure and strengthening mechanisms of T23 steel used for superheater tube has been investigated by means of carbon replica method,transmission electron microscopy,SEM and EDS.The results showed that the microstructure of T23 by normalizing processing is granular bainite.For granular bainite steel,not only grain boundary and substructure strengthening,solution strengthen,but also dispersion strengthening of M/A island are effective.The microstructure of T23 under tempered after normalizing condition... |
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| Keywords: | HCM2S(T23) steel Granular bainite M/A island Strengthening mechanism |
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