本文研究了G-X12CrMoWVNbN10 1 1钢在700℃长时间等温处理过程中的组织演变.通过DTA曲线,分析得到该钢种在加热和冷却过程中的各相转变温度.采用光学显微镜、扫描电镜和能谱分析,研究不同时间等温处理后的组织.结果表明:M3C型碳化物优先在原奥氏体晶界附近析出,此后,碳化物聚集长大导致出现两相区.随着等温处理时间的增加,两相区的转变量近似以S形规律增加,基体硬度则线性降低.
参考文献
| [1] | Fujimitsu MASUYAMA .History of Power Plants and Progress in Heat Resistant Steels[J].ISIJ International,2001(6):612-625. |
| [2] | Torsten-Ulf KERN;Marc STAUBLI;Brendon SCARLIN .The European Efforts in Material Development for 650 deg C USC Power Plants-COST522[J].ISIJ International,2002(12):1515-1519. |
| [3] | Ennis P J;Quandakkers W J.9-12% Chromium Steels:Application Limits and Potential for Further Development[A].London:Institute of Materials,2000:265-275. |
| [4] | Ryu S H;Yu J;Ku B S.Effects of Alloying Elements on the Creep Rupture Strength of 9-12%Cr Steels[A].London:Institute of Materials,2000:472-484. |
| [5] | Schuster F A;Hanus R;Cerjak H.Foundry experience in large turbine casings and valve bodies made of steel castings P91 and G-X12CrMoWVNbN 10 11[A].London:Mechanical Engineering Publication Limited for the Institution of Mechanical Engincers,1996:11-22. |
| [6] | Schonfeld K H;Wagner H.Experience in Manufacturing and Mechanical Properties of Turbine Rotor Forgings and Discs in Improved 10%CrMoWVNbN Steel[A].London:IOM Communications Ltd,1999:375-385. |
| [7] | Mayer K H;Kern T U;Staubli M;Tolksderf E.Long-Term Investigation of Specimens of 24 Production Components Manufactured from Advanced Martensitic 10% Cr-Stcels for 600℃Steam Turbines[A].London:Institute of Materials,2000:372-385. |
| [8] | Harms R F;Schonfeld K H;Wagner H.Transformation of Knowledge and Technology from Research and Development to the Commercial Production of Heavy Steel Castings and Forgings for Power Engineering,Made of Advanced Creep Resistant Steels[A].London:Institute of Materials,2000:348-371. |
| [9] | Zeiler G;Meyer W;Spiradek K;Wosik J.Experiences in Manufacturing and Long-Term Mechanical & Microstructural Testing on 9-12%Chromium Steel Forgings for Power Generation Plants[A].Ohio:ASM International,2005 |
| [10] | Igarashi M;Muneki S;Kutsumi T;Itagaki T Fujitsuna N and Abe F.A New Concept for Strengthening of Advanced Ferritic Steels for USC Power Plant[A].London:Institute of Materials,2000:334-347. |
| [11] | 章守华.合金钢[M].北京:冶金工业出版社,1981:25. |
| [12] | Janovee J;Svoboda M;Blach J .Evolution of secondary phases during quenching and tempering 12%Cr steel[J].Materials Science and Engineering,1998,A249:184-189. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%