研究了700和900℃时效高温合金IN792组织的演变规律和持久寿命的变化情况.700℃时,随着时效时间延长,γ＇和碳化物的形貌、尺寸与分布没有发生变化；持久寿命保持稳定.900℃时,时间延长,γ ＇发生粗化,并形成条状;且在1007 h之后,条状γ ＇的形态基本不变;但时效到2014 h时析出少量的针状TCP相；与热处理状态相比(61 h),时效500h时持久寿命下降到30h,降低50％左右;时效到1007 h之后,直至2014h,持久寿命不再随时间延长而变化.
参考文献
| [1] | Johnson W C .[J].Acta Metallurgica,1984,32:465. |
| [2] | McLean D .[J].Materials Science,1984,18:249. |
| [3] | Ardell R J;Nicholson R B .[J].Acta Metallurgica,1966,14:1295. |
| [4] | Ardell A J .[J].Metallurgical and Materials Transactions,1970,1:525. |
| [5] | Ardell A J .[J].Acta Metallurgica,1972,20:61. |
| [6] | Tawancy T .[J].Journal of Materials Science,1983,18:2976. |
| [7] | Lai G Y .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1978,9A:827. |
| [8] | Rae C M F;Reed R C .[J].Acta Materialia,2001,49:4413. |
| [9] | Rae CMF;Hook MS;Reed RC .The effect of TCP morphology on the development of aluminide coated superalloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):231-239. |
| [10] | Simontti M;Caron P .[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1998,254:1. |
| [11] | Liu Y;Zhao X;Liu Z .[J].China J Met Sci Technol,1990,6(08):319. |
| [12] | Ross E W .[J].Journal of Metals,1967,19:12. |
| [13] | Miyazaki T;Nakamura K;Mori H .[J].Journal of Materials Science,1979,14:1827. |
| [14] | Nabarro F R N .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1996,27A:513. |
| [15] | Footner P K;Richards B P .[J].Journal of Materials Science,1982,17:2141. |
| [16] | Yang J X;Zheng Q;Zhang H Y et al.[J].Materials Science and Engineering A,2010,527:1016. |
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%