曾立英,杨冠军,洪权,赵永庆

• 1:西安建筑科技大学冶金工程学院
• 2:西北有色金属研究院

摘要(Abstract)：

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。

关键词(KeyWords)： Ti-600高温钛合金;应力指数;蠕变激活能;稳态蠕变速率;变形机制

Abstract:

Keywords:

基金项目(Foundation): 国家“973”计划资助项目(2007CB613807);; 国家科技支撑计划资助项目(2007BAE07B01)

作者(Author): 曾立英,杨冠军,洪权,赵永庆

DOI: 10.13289/j.issn.1009-6264.2011.02.017

参考文献(References)：

• [1]Boyer R R.An overview on the use of titanium in the aerospace industry[J].Mater Sci Eng A,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 Z L,Wu W T,Wang Q J,et al.Effect of coatings on oxidation resistance and mechanical performance of Ti60 alloy[J].Mater Sci Eng A,1998,255(1-2):133-138.
• [6]Cui W F,Liu C M,Zhou L,et al.Characteristics of microstructures and second-phase particles in Y-bearing Ti-1100 alloy[J].Material Science andEngineering A,2002,323:192-197.
• [7]Zeng L Y,Hong Q,Yang G J,et al.Tensile and creep properties of Ti-600 alloy[J].Trans Nonferrous Met Soc 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,2003,32(2):117-120.Wang Min-min,Zhao Yong-qing,Zhou Lian.High temperature creep behavior of Ti40 alloys[J].Rare Metal Materials and Engineering,2003,32(2):117-120.
• [9]师昌绪.材料大词典[M].北京:化学工业出版社,1994.
• [10]Mukherjee A K.An examination of the constitutive equation for elevated temperature plasticity[J].Materials Science and Engineering A,2002,322:1-22.
• [11]Reis D A P,Moura Neto C.Silva R M,et al.Effect of coating on the creep behavior of the Ti6Al4V alloy[J].Materials Science and EngineeringA,2008,486(1-2):421-426.
• [12]Barboza M J R,Perez E A C,Medeiros M M,et al.Creep behavior of Ti-6Al-4V and a comparison with titanium matrix composites[J].MaterialsScience and Engineering A,2006,428:319-326.
• [13]Mishra H,Satyanarayana D V V,Nandy T K,et al.Effect of trace impurities on the creep behavior of a nearαtitanium alloy[J].ScriptaMaterialia,2008,59(6):591-594.

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