试验采用光学显微镜、X射线衍射仪（XRD）、透射电镜（TEM）及能谱分析（EDS）等手段，研究不同铬含量的超级马氏体不锈钢在相同热处理工艺下逆变奥氏体含量、组织形貌及生长规律的异同。结果表明，13Cr和15Cr两试验钢经淬火＋回火后的显微组织为回火马氏体和逆变奥氏体，两试验钢中逆变奥氏体含量及尺寸均随着回火温度升高先增加再减小，且在650～700℃时达到最大。两试验钢内的逆变奥氏体在回溶过程中会对基体组织产生细化作用。通过对比发现，15Cr钢中的逆变奥氏体含量更多，尺寸更大，回溶时对基体的细化作用更明显。
The effect of adding different content of Cr to the super martensitic stainless steel (SMSS) on formation of re-versed austenite subjected to quenching and tempering by using optical microscope(OM),X-ray diffraction (XRD),trans-mission electron microscope (TEM) and energy dispersive spectrometer(EDS) was studied. The experimental results indi-cate that the microstructures of two tested steels were tempered martensite and reversed austenite after tempering. The vol-ume fraction and grain size of reversed austenite in two tested steels increased first and then decreased with the increase of tempering temperature,which reached the maximum at 650-700℃. When the reversed austenite re-dissolved and trans-formed to martensite,there was an effect of refinement on the matrix. Compared with 13Cr steels,the reversed austenite in 15Cr steels was more and the size was bigger. The effect of refinement on the matrix was more obvious.
参考文献
| [1] | Rodrigues C A D,Lorenzo P L D,Sokolowski A,et al . Devel-opment of a supermartensitic stainless steel microalloyed with niobium[J].J ASTM,2006,3(5):1.,2006. |
| [2] | ZOU De-ning,HAN Ying,ZHANG Wei,FANG Xu-dong.Influence of Tempering Process on Mechanical Properties of 00Cr13Ni4Mo Supermartensitic Stainless Steel[J].钢铁研究学报（英文版）,2010(08):50-54. |
| [3] | Linne C P,Blanchard F,Guntz G C,et al. Corrosion perfor-mances of modified 13Cr for OCTG in oil and gas environments [C]//Corrosion 97. Texas:NACE,1997:28.,1997. |
| [4] | Bilmes P D,Solari M,Llorente C L . Characteristics and ef-fects of austenite resulting from tempering of 13Cr-NiMo mar-tensitic steel weld metals[J].Materials Characterization,2001,46(4):285.,2001. |
| [5] | Hubackova J,Cihal V,Mazanec K . Two-stage tempering of steel 13%Cr6%Ni[J].Materialwissenschaft und Werkstofftech-nik,1984,15(12):411.,1984. |
| [6] | LIU Yu-rong,YE Dong,YONG Qi-long,SU Jie,ZHAO Kun-yu,JIANG Wen.Effect of Heat Treatment on Microstructure and Property of Cr13 Super Martensitic Stainless Steel[J].钢铁研究学报：英文版,2011(11):60-66. |
| [7] | 朱绪祥,刘东升.低C含7.7％Ni低温钢经两相区淬火后的组织性能[J].钢铁,2013(11):72-78,83. |
| [8] | JIANG Wen,ZHAO Kun-yu,YE Dong,LI Jun,LI Zhi-dong,SU Jie.Effect of Heat Treatment on Reversed Austenite in Cr15 Super Martensitic Stainless Steel[J].钢铁研究学报（英文版）,2013(05):61-65. |
| [9] | YE Dong,LI Jun,JIANG Wen,et al . Effect of Cu addition on microstructure and mechanical properties of 15%Cr super mar-tensitic stainless steel[J].Materials&Design,2012,41 |
| [10] | 杨汉,王西霞,曲锦波.硼对低焊接裂纹敏感性高强钢组织性能的影响[J].钢铁,2013(12):80-84. |
| [11] | 罗素娟. 0015CrNi6Mo2AlNb钢中逆转变奥氏体的测定[J].宇航材料工艺,1982(6):34.,1982. |
| [12] | Tomota Y,Morioka Y,Nakagawara W . Epsilon martensite to austenite reversion and related phenomena in Fe-24Mn and Fe-24Mn-6Si alloys[J].Acta Materials,1998,46(4):1419.,1998. |
| [13] | Dyson D J,Holmes B . Effect of alloying additions on the lattice parameter of austenite[J].Iron and Steel Institute,1970,208(5):469.,1970. |
| [14] | Monkman F C,Cuff F B,Grant N J . Computation of Ms for stainless steels[J].Metals Progress,1957,71 |
| [15] | Eichelman G H,Hull F C . The effect of composition on the tem-perature of spontaneous transforamtion of austenite or martens-ite in 18-8 type stainless steel[J].Transactions of the ASM,1953,45 |
| [16] | 雍岐龙.钢铁材料中的第二相[M].北京:冶金工业出版社,2006.,2006. |
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