一种新型高铬铁素体钢的蠕变性能及显微组织
Creep Properties and Microstructure of A New High Chromium Ferric Steel
摘 要
对一种新型高铬铁素体钢在温度为650 ℃和110, 120, 130 MPa三种应力下的蠕变性能进行了研究, 并对该钢蠕变前后的显微组织进行了对比分析。结果表明:该钢具有良好抗蠕变性能, 在650 ℃下, 随着载荷从110 MPa增加到130 MPa, 其蠕变断裂时间从4 500 h降低到3 600 h, 蠕变速率从7.7×10-10 s-1提高到1.1×10-9 s-1, 其蠕变抗力在相同试验条件下优于T91、T92 和T122钢的;该钢的板条马氏体在颈缩变形区完全消失; 在均匀和颈缩区内的M23C6型碳化物都明显粗化, 同时形成了新的Fe2(W, Mo)金属间化合物相。
板条马氏体
蠕变
析出相
high chromium ferric
lath martensite
creep
precipitate
Abstract
The creep properties of a new high chromium ferric steel under 110, 120 and 130 MPa at 650 ℃ were investigated. Then the microstructure of the steel before and after creep was comparatively analyzed. The results show that the steel had good creep resistance. With increasing the loading from 110 MPa to 130 MPa at 650 ℃, the creep rupture time decreased from 4 500 h to 3 600 h, the creep rate increased from 7.7×10-10 s-1 to 1.1×10-9 s-1, whose creep resistance was better than that of the T91, T92 and T122 steels under the same test condition. The lath martensite of the steel disappeared completely in necking deformation area. The M23C6 carbides coarsened obviously in the uniform and necking deformation area. And a new Fe2(W, Mo) intermetallic phase formed.
中图分类号 TG142.23
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收稿日期 2010/2/21
修改稿日期 2010/12/14
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备注刘俊亮(1965-), 男, 上海人, 博士。
引用该论文: LIU Jun-liang. Creep Properties and Microstructure of A New High Chromium Ferric Steel[J]. Materials for mechancial engineering, 2011, 35(2): 54～57
刘俊亮. 一种新型高铬铁素体钢的蠕变性能及显微组织[J]. 机械工程材料, 2011, 35(2): 54～57
被引情况:
【1】沈喜训,刘俊亮,沈巍, "铜含量对高铬铁素体钢组织和蠕变性能的影响",机械工程材料 36, 12-16(2012)
【2】刘俊亮,单爱党, "新型铁素体耐热钢在650 ℃的蠕变特性及氧化行为",机械工程材料 36, 52-55(2012)
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参考文献
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【2】CHOUDHARY B K, PHANIRAJ C, BHANU S, et al. Creep deformation behaviour and kinetic aspects of 9Cr-1Mo ferritic steel[J].ISIJ International, 2001, 41(Suppl):73-80.
【3】SAKAKIBARA M, MASUMOTO H, OGAWA T, et al. High strength 9Cr-0.5Mo-1.8W steel (NF616) tubes for boi-lers[J].Thermal and Nuclear Power, 1987, 38:841-850.
【4】ISEDA A, SAWARAGI Y, KATO S, et al. Creep: characterization, damage and life assessment[C]//Proc 5th Int Conf Creep of Materials. Clevelend: ASM Int, Metal Park, 1992:389-293.FUTAMURA Y, TSUCHIYAMA S, TAKAK S, et al. Strengthening mechanism of Cu bearing heat resistant martensitic steels[J].ISIJ International, 2001, 41:106-110.
【5】MURATA Y, MORINAGA M, HASHIZUME R, et al. Effect of carbon content on the mechanical properties of 10Cr-5W ferritic steels[J].Material Science and Engineering A, 2000, 282:251-261.
【6】TSUCHIDA Y, OKAMOTO K, TOKUNAGA Y. Improvement of creep rupture strength of high Cr ferritic steel by addition of W[J].ISIJ International, 1995, 35:317-323.
【7】FUJIO A. Bainitic and martensitic creep-resistant steels[J].Current Opinion in Solid State and Materials Science, 2004, 8:305-311.
【8】MASUYAMA F. Histroy of power plants and progress in heat resistant steel[J].ISIJ International, 2001, 41:612-615.
【9】ENNIS P J, ZIELINSKA-LIPIEC A, WACHTER O, et al. Microstructural stability and creep rupture strength of the martensitic steel P92 for advanced power plant[J].Acta Metallurgica, 1997, 45:4901-4907.
【10】FROST H J, ASHBY M F. Deformation mechanism maps[M].Oxford: Pergamon Press, 1982:21-23.
【11】WANG Q J, TOSHIAKI T, HONG J, et al. Effect of Co addition on the microstructure and creep properties of 12%Cr heat-resistant steels[C]//Baosteel BAC. Shanghai: Baosteel Group Coorperation, 2008:197-201.
【12】DIMMLERG, WEINERT P, KOZESCHNIK E, et al. Quantification of the Laves phase in advanced 9-12% Cr steels using a standard SEM[J].Materials Characterization, 2003, 51:341-352.
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