研究不同固溶处理温度和时效处理温度对SRR99镍基单晶高温合金的微观组织和持久性能的影响.利用扫描电镜和光学金相显微镜对显微组织进行表征和分析,利用GWT304常载拉伸蠕变试验机测试其持久性能.结果表明:随着一次时效温度的提高,二次γ′相尺寸逐渐增大,γ′相体积分数先增加后降低;随着固溶温度的提高,合金中残余共晶含量减少,偏析逐渐降低,在1050℃/150MPa条件下,合金的持久寿命呈现先增加后降低的趋势.
参考文献
| [1] | 胡壮麒,刘丽荣,金涛,孙晓峰.镍基单晶高温合金的发展[J].航空发动机,2005(03):1-7. |
| [2] | 陈荣章.单晶高温合金发展现状[J].材料工程,1995(08):3. |
| [3] | KHAN T.High temperature alloys for gas turbines and other application1986[M].Holland:D Reidel Publishing Company,1986:21-30. |
| [4] | 孔样鑫.第四代战斗机及其动力装置[J].航空科学技术,1994(05):21-23. |
| [5] | 陈金国.军用航空发动机的发展趋势[J].航空科学技术,1994(05):9-12. |
| [6] | FOSTER S M;NIELSEN T A;NAGY P.Development of a new single crystal superalloy for industry gas turbines[A].New York:The Metallurgical Society,1988:245-254. |
| [7] | Diologent F;Caron P .On the creep behavior at 1033 K of new generation single-crystal superalloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):245-257. |
| [8] | MURAKUMO T;KOBAYASHI T;KOIZUMI et al.Creep behaviour of Ni-base single crystal superalloys with various γ′ volume fraction[J].Acta Materialia,2004,52:3737-3744. |
| [9] | CARON P .On the effects of heat treatment on the creep behavior of a single crystal superalloy[J].Scripta Metallurgica,1986,20(06):875-880. |
| [10] | EBERT L J;MACKAY R A .The development of γ-γ lamellar structures in a nickel-base superalloy during elevated temperature mechanical testing[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1985,16:1969-1982. |
| [11] | WIDMER R;ALLEN S M;PELLOUX R M.Advanced hightemperature alloys:processing and properties[M].Ohio:ASM,1986:41-50. |
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%