利用DIL805A/D高精度差分膨胀仪,通过线膨胀行为测量与微观组织分析,获得T91铁素体耐热钢连续冷却转变过程中相关动力学信息,结合冷却后T91钢组织特征,确定了T91钢过冷奥氏体转变过程中的临界冷却速度.研究表明:T91钢过冷奥氏体连续冷却过程中只存在铁素体和马氏体转变区,而不出现贝氏体和珠光体转变.在冷却速度为10K/min时该钢获得完全板条马氏体组织,9K/min时组织中开始出现铁素体,即10K/min可以定为T91钢奥氏体向马氏体转变的上临界冷却速度;当冷却速度介于3～9K/min时为马氏体和铁素体的混合组织,冷却速度为2K/min时T91钢中不存在马氏体转变,室温组织为铁素体,即2K/min可以定为T91钢奥氏体向马氏体转变的下临界冷却速度.
参考文献
| [1] | Takashi Watanabe;Masaaki Tabuchi;Masayoshi .Creep damage evaluation of 9Cr-1Mo-V-Nb steel welded joints showing Type IV fracture[J].International Journal of Pressure Vessels and Piping,2006(1):63-71. |
| [2] | Sawada K;Ohba T;Kushima H;Kimura K .Effect of microstructure on elastic property at high temperatures in ferritic heat resistant steels[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):36-42. |
| [3] | Dionisio Laverde;Tomas Gomez-Acebo;Francisco Castro .Continuous and cyclic oxidation of T91 ferritic steel under steam[J].Corrosion Science,2004(3):613-631. |
| [4] | Gupta G;Jiao Z;Ham AN;Busby JT;Was GS .Microstructural evolution of proton irradiated T91[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2006(1/3):162-173. |
| [5] | Yongsun Yi;Byeonghak Lee;Sungho Kim;Jinsung Jang .Corrosion and corrosion fatigue behaviors of 9cr steel in a supercritical water condition[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):161-168. |
| [6] | M. MacKenzie;A.J. Craven;C.L. Collins .Nanoanalysis of Very Fine VN Precipitates in Steel[J].Scripta materialia,2006(1):1-5. |
| [7] | J. Onoro .Weld metal microstructure analysis of 9-12 percent Cr steels[J].International Journal of Pressure Vessels and Piping,2006(7):540-545. |
| [8] | Klueh RL;Hashimoto N;Maziasz PJ .Development of new nano-particle-strengthened martensitic steels[J].Scripta materialia,2005(3):275-280. |
| [9] | R. Agamennone;W. Blum;C. Gupta .Evolution of microstructure and deformation resistance in creep of tempered martensitic 9-12 percent Cr-2 percent W-5 percent Co steels[J].Acta materialia,2006(11):3003-3014. |
| [10] | TANEIKE M;ABE F;SAWADA K .Creep-strengthening of steel at high temperatures using nano-sized carbonitribe dispersions[J].Nature,2003,424(05):294-296. |
| [11] | 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. |
| [12] | GUPTA G;WAS G S .The role of grain boundary engineering on the high temperature of ferritic-martensitic alloy T91[J].Journal of ASTM International,2005,58(02):1-11. |
| [13] | F. Abe;T. Horiuchi;M. Taneike;K. Sawada .Stabilization of martensitic microstructure in advanced 9Cr steel during creep at high temperature[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):299-303. |
| [14] | Manabu TAMURA;Hirotaka IIDA;Hisao ESAKA .Solubility Product of VN in Austenite of High Cr Heat Resistant Steel[J].ISIJ International,2003(11):1807-1813. |
| [15] | LIU Y C;SOMMER F;MITTEMEIJER E J .Abnormal austenite ferrite transformation behaviour in substitute Fe-base alloys[J].Acta Materialia,2003,58(02):507-513. |
| [16] | 姚可夫,钱滨,石伟,刘春成,刘庄.马氏体回火过程中组织转变量预测的实验研究[J].金属学报,2003(08):892-896. |
| [17] | 胡光立;谢希文.钢的热处理[M].西安:西北工业大学出版社,1993 |
| [18] | 徐祖耀.马氏体相变与马氏体[M].北京:科学出版社,1999 |
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