进行了不同温度、频率和应力比条件下喷射成形GH738合金紧凑拉伸(CT)试样的疲劳裂纹扩展试验,分析了相应条件下的疲劳裂纹扩展速率及其对疲劳裂纹扩展行为的影响规律.结果表明:随着温度的升高,裂纹扩展速率略有加快;加载频率降低,疲劳裂纹扩展加速;裂纹扩展速率da/dN随应力比R的增大而增大.疲劳断口呈现多裂纹源特征,裂纹稳定扩展为疲劳条带机制.
参考文献
| [1] | SHEN G,SEMIATIN S L,SHIVPURI R .Modeling microstructural development during the forging of Waspaloy[J].Metallurgical and Materials Transactions:A,1995,26 |
| [2] | LIU N,LI Z,ZHANG G Q .Hot deformation behavior and microstructure evolution of spray formed GH738 superalloy[J].Rare Metals,2011,30 |
| [3] | YUAN H,LIZ,ZHANGG Q,et al .The study of microstructures and properties of spray formed superalloy GH738 ring[J].Journal of Iron and Steel Research,2011,23 |
| [4] | 孙剑飞,沈军 .喷射成形镍基高温合金的研究进展[J].材料导报,1999,13(2):10-12.SUN J F,SHEN J.Development of spray formed nickel base superalloys[J].Materials Review,1999,13(2):10-12.,1999. |
| [5] | DAVIDSON D L,TRYON R G,OJA M,et al .Fatigue crack initiation in Waspaloy at 20℃[J].Metallurgical and Materials Transactions:A,2007,38 |
| [6] | LIU X B,MA L Z,CHANG K M,et al .Fatigue crack propagation of Ni-base superalloys[J].Acta Metallurgica Sinica:A,2005,18 |
| [7] | XU W Y,ZHANG G Q,LI Z .Low cycle fatigue behavior of spray formed superalloy rings[J].Advanced Materials Research,2012,399 |
| [8] | YANG D Y,XU W Y,LI Z,et al .Quantitative analysis on fatigue fracture of spray formed GH738 alloy[J].Materials Science Forum,2013,747 |
| [9] | 钟群鹏,赵子华.断口学[M].北京:高等教育出版社,2006.268-270.,2006. |
| [10] | 赵荣国,罗希延,任璐璐,李红超,李秀娟,刘学晖.航空发动机涡轮盘用GH4133B合金疲劳裂纹扩展行为研究[J].机械工程学报,2011(18):55-65. |
| [11] | 刘维维,唐定中,李嘉荣,刘世忠,熊继春.抽拉速率对DD6单晶高温合金650℃低周疲劳性能的影响[J].航空材料学报,2012(02):8-12. |
| [12] | LIAW P K,SAXENA A,SWAMINATHAN V P,et al .Effects of load ratio and temperature on the near-threshold fatigue crack propagation behavior in a CrMoV steel[J].Metallurgical and Materials Transactions:A,1983,14(8):1631-1640.,1983. |
| [13] | 高文柱,吴欢,赵永庆.金属材料疲劳裂纹扩展研究综述[J].钛工业进展,2007(06):33-37. |
| [14] | GHONEM H,FOERCH R .Frequency effects on fatigue crack growth behavior in a near-α titanium alloy[J].Materials Science and Engineering:A,1991,138(1):69-81.,1991. |
| [15] | 沙桂英,韩玉,刘腾,李朝华,王杰.应力幅对退火态Mg-3Al-2Sc合金疲劳行为的影响[J].材料工程,2012(12):24-28. |
| [16] | 刘新灵,张峥,陶春虎.疲劳断口定量分析[M].北京:国防工业出版社,2010.78-80.,2010. |
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%