The influences of thermal stabilization of austenitic on the onset temperature for a martensite transformation in T91 ferritic heat-resistant steel were studied by high-resolution differential dilatometer. The phase trans-formation kinetic information was obtained by adopting lever rule from the recorded dilatometric curves. The results show that an inverse stabilization, featured by the damage of "the atmosphere of carbon atoms" and the increase of the starting temperature for martensite transformation takes place when the T91 ferritic steel is isothermally treated above the Ms point, and it becomes strong with increasing the holding time. While the continued temperature for martensite transformation decreases gradually when isothermally holding at a temperature below Ms point. The observed inverse stabilization behavior could be attributed to the relatively high temperature of Ms point in the explored T91 ferritic heat-resistant steel.
参考文献
| [1] | M. Yoshizawa;M. Igarashi .Long-term creep deformation characteristics of advanced ferritic steels for USC power plants[J].International Journal of Pressure Vessels and Piping,2007(1/2):37-43. |
| [2] | M B Jáos .[J].Progress in Energy and Combustion Science,2007,33(02):107. |
| [3] | A Zeman;L Debarberis;J Kocik;E Keilová .[J].Journal of Nuclear Materials,2007,362(2-3):259. |
| [4] | R L Klueh;N Hashimoto;P J Maziasz .[J].Scripta Materialia,2005,53(03):275. |
| [5] | F. Abe;M. Taneike;K. Sawada .Alloy design of creep resistant 9Cr steel using a dispersion of nano-sized carbonitrides[J].International Journal of Pressure Vessels and Piping,2007(1/2):3-12. |
| [6] | T Watanabe;M Tabuchi;M Yamazaki .[J].Int J Pressure Vessels Pip,2006,83(01):63. |
| [7] | G Gupta;Z Jiao;A N Ham .[J].J Nud Mater,2006,351(1-3):162. |
| [8] | K. Kimura;S. Yamaoka .Influence of high pressure normalizing heat treatment on microstructure and creep strength of high Cr steels[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(0):628-632. |
| [9] | Y Yi;B Lee;S Kim .[J].Materials Science and Engineering A,2006,429(1-2):161. |
| [10] | M. MacKenzie;A.J. Craven;C.L. Collins .Nanoanalysis of Very Fine VN Precipitates in Steel[J].Scripta materialia,2006(1):1-5. |
| [11] | J. Onoro .Weld metal microstructure analysis of 9-12 percent Cr steels[J].International Journal of Pressure Vessels and Piping,2006(7):540-545. |
| [12] | H.S. Cho;H. Ohkubo;N. Iwata;A. Kimura;S. Ukai;M. Fujiwara .Improvement of compatibility of advanced ferritic steels with super critical pressurized water toward a higher thermally efficient water-cooled blanket system[J].Fusion engineering and design,2006(8/14):1071-1076. |
| [13] | S Spigarelli;E Quadrini .[J].Materials & Design,2002,23(06):547. |
| [14] | H.C. Furtado;L.H. de Almeida;I. Le May .Precipitation in 9Cr-lMo steel after creep deformation[J].Materials Characterization,2007(1):72-77. |
| [15] | M. YOSHINO;Y. MISHIMA;Y. TODA .Phase equilibrium between austenite and MX carbonitride in a 9Cr-1 Mo-V-Nb steel[J].ISIJ International,2005(1):107-115. |
| [16] | M Tamura;H Iida;H Esaka .[J].ISIJ International,2003,43(11):1807. |
| [17] | Zuyao XU .[J].Heat Treatment,2004,19(02):1. |
| [18] | Liancheng ZHAO;Yunxu LIU.Fundamentals of Metal Heat Treatment[M].北京:机械工业出版社,1982:122-125. |
| [19] | Guangli HU;Xiweng XIE.Steel Heat Treatment[M].西安:西北工业大学出版社,1996:106-109. |
| [20] | Y. C. Liu;F. Sommer;E. J. Mittemeijer .Abnormal austenite-ferrite transformation behaviour in substitutional Fe-based alloys[J].Acta materialia,2003(2):507-519. |
| [21] | Kefu YAO;Bin QIAN;Wei SHI;Chuncheng LIU and Zhuang LIU .[J].ACTA METALLURGICA SINICA,2003,39(08):892. |
| [22] | Zuyao XU.Martensitic Phase Transformation & Martensite[M].北京:科学出版社,1999:593-596. |
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