在Gleeble-3500热模拟实验机上对Delta工艺Inconel 718合金进行高温压缩实验,研究其高温压缩变形的流变应力行为.结果表明:δ相时效态Inconel 718合金在本实验条件下具有正的应变速率敏感性,流变应力随着应变速率的降低和变形温度的升高而减小,动态再结晶是合金重要的软化机制.δ相时效态Inconel 718合金的热变形激活能为497.407kJ/mol,高温压缩峰值流变应力与变形温度和应变速率的关系可用双曲正弦函数表示.
参考文献
| [1] | 庄景云,杜金辉,邓群.GH4169合金及其锻件晶粒形貌的特点[J].钢铁研究学报,2003(z1):44-48. |
| [2] | 刘东,罗子健.GH4169合金锻件的混晶组织[J].热加工工艺,2004(09):3-5. |
| [3] | CAI D Y;ZHANG W H;NIE P L;LIU W C YAO M .Dissolution kinetics of δ phase and its influence on the notch sensitivity of Inconel 718[J].Materials Characterization,2007,58(03):220-225. |
| [4] | 洪班德;伊晓;孟庆昌 .δ-Ni3Nb对Inconel 718合金低周疲劳断裂行为的影响[J].金属学报,1991,27(01):55-60. |
| [5] | 周晓虎.GH4169合金涡轮盘锻件粗晶质量分析和控制[J].锻压技术,2004(05):9-11. |
| [6] | Huang Y;Langdon TG .The evolution of delta-phase in a superplastic Inconel 718 alloy[J].Journal of Materials Science,2007(2):421-427. |
| [7] | G. Muralidharan;R. G. Thompson .EFFECT OF SECOND PHASE PRECIPITATION ON LIMITING GRAIN GROWTH IN ALLOY 718[J].Scripta materialia,1997(7):755-761. |
| [8] | RUIZ C;OBABUEKI A;GILLESPIE K.Evaluation of the microstructure and mechanical properties of delta-processed alloy 718[A].Warrendale:TMS,1992:33-42. |
| [9] | A. Thomas;M. El-Wahabi;J.M. Cabrera .High temperature deformation of Inconel 718[J].Journal of Materials Processing Technology,2006(1/3):469-472. |
| [10] | Kashyap B.P.;Chaturvedi M.C. .ACTIVATION ENERGY FOR SUPERPLASTIC DEFORMATION OF IN718 SUPERALLOY[J].Scripta materialia,2000(5):429-433. |
| [11] | Y. Wang;W.Z. Shao;L. Zhen;L. Yang;X.M. Zhang .Flow behavior and microstructures of superalloy 718 during high temperature deformation[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):479-486. |
| [12] | Y. Wang;L. Zhen;W.Z. Shao .Hot working characteristics and dynamic recrystallization of delta-processed superalloy 718[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):341-346. |
| [13] | DIX A W;HYZAK J M;SINGH R P.Application of ultra fine grain alloy 718 forging billet[A].Warrendale:TMS,1992:23-32. |
| [14] | BHOWAL P R;SCHIRRA J J.Full scale GatorizingTM of fine grain Inconel 718[A].Warrendale:TMS,2001:193-201. |
| [15] | 吕宏军,姚草根,张凯峰,贾新朝.GH4169合金细晶成形工艺与机理及其性能研究[J].机械工程材料,2003(01):15-17,50. |
| [16] | ZENER C;HOLLOMON J H .Effect of strain-rate upon the plastic flow of steel[J].Applied Physics A:Materials Science and Processing,1944,15(01):22-27. |
| [17] | WANG Y;LIND L .A correlation between tensile flow stress and Zener-Hollomon factor in TiAl alloy at high temperatures[J].Materials Science,2000,19:1185-1188. |
| [18] | Shi H;McLaren AJ;Sellars CM;Shahani R;Bolingbroke R .Constitutive equations for high temperature flow stress of aluminium alloys[J].Materials Science and Technology: MST: A publication of the Institute of Metals,1997(3):210-216. |
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%