研究了Ti-600合金在550～650℃下的高温蠕变行为,实验应力为150～300 MPa.计算了合金在不同应力、不同温度下的稳态蠕变速率、应力指数及蠕变激活能,并在此基础上研究了其蠕变强化机制.蠕变应力为300 MPa时,Ti-600合金的蠕变激活能Q=490.1 kJ/mol;650 ℃,合金的蠕变应力指数n值在6.5～8.5之间变化,表明在实验温度范围内合金的蠕变变形以位错攀移为主,以位错的滑移为辅.
参考文献
| [1] | Boyer R R .An overview on the use of titanium in the aerospace industry[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1996,213:103-114. |
| [2] | Chandler H.Heat Treaters's Guide:Practices and Procedures for Nonferrous Alloys[M].ASM International,1996 |
| [3] | Bania P J .An advanced alloys for elevated temperature[J].Journal of Metals,1988,3:20-22. |
| [4] | 张均;李东.高温钛合金中的α2相[M].沈阳:东北大学出版社,2002 |
| [5] | Tang ZL.;Wu WT.;Wang QJ.;Li D.;Wang FH. .Effect of coatings on oxidation resistance and mechanical performance of Ti60 alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(1/2):133-138. |
| [6] | Cui WF.;Liu CM.;Zhou L.;Luo GZ. .Characteristics of microstructures and second-phase particles in Y-bearing Ti-1100 alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):192-197. |
| [7] | Zeng L Y;Hong Q;Yang G J.Tensile and creep properties of Ti-600 alloy[J].Transactions of Nonferrous Metals Society of China,2007(suppl):s522-s525. |
| [8] | 王敏敏,赵永庆,周廉.Ti40阻燃钛合金的高温蠕变行为[J].稀有金属材料与工程,2003(02):117-120. |
| [9] | 师昌绪.材料大词典[M].北京:化学工业出版社,1994 |
| [10] | Mukherjee AK. .An examination of the constitutive equation for elevated temperature plasticity[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1-2 Special Issue SI):1-22. |
| [11] | Reis, DAP;Neto, CM;Silva, CRM;Barboza, MJR;Neto, FP .Effect of coating on the creep behavior of the Ti-6Al-4V alloy[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):421-426. |
| [12] | M. J. R. Barboza;E. A. C. Perez;M. M. Medeiros;D. A. P. Reis;M. C. A. Nono;F. Piorino Neto;C. R. M. Silva .Creep behavior of Ti-6Al-4V and a comparison with titanium matrix composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):319-326. |
| [13] | H. Mishra;D. V. V. Satyanarayana;T. K. Nandy .Effect of trace impurities on the creep behavior of a near alpha titanium alloy[J].Scripta materialia,2008(6):591-594. |
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