高温下DD6单晶气冷叶片模拟试样拉伸性能试验

何爱杰; 李世峰; 罗秋生; 曾军; 马健; 吴长波

高温下DD6单晶气冷叶片模拟试样拉伸性能试验

中国航空工业集团公司中国燃气涡轮研究院涡轮技术研究室, 成都 610500

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出版历程
- 收稿日期: 2011-04-13
- 修回日期: 2011-08-06
- 刊出日期: 2012-02-28

Experimental investigation on tension behavior of DD6 single crystal thin-walled cylindrical specimen under high temperature

Research Centre of Turbine Technology, China Gas Turbine Establishment, Aviation Industry Corporation of China, Chengdu 610500, China

摘要

摘要: 通过选晶法制备DD6单晶薄壁圆管模拟试样,对850℃和980℃两种温度下[001]晶体取向含与不含气膜孔的薄壁试管进行拉伸性能试验研究.结果表明:在850℃条件下,[001]取向含气膜孔的拉伸性能比[001]取向不含气膜孔的拉伸性能降低10.5%;在980℃条件下,[001]取向含气膜孔的拉伸性能与[001]取向不含气膜孔的拉伸性能水平相当,这表明温度越高,气膜孔对薄壁件拉伸性能的影响越不显著;但在980℃ 条件下,[001]取向通气状态的拉伸强度比不通气状态下的拉伸强度提高16%.同时,发现圆管表面状态及通气状态是影响单晶薄壁试样高温性能的重要因素,特别是通气状态的存在显著提高了其高温力学性能.
- DD6单晶 /
- 薄壁圆管 /
- 气膜孔 /
- 通气状态 /
- 拉伸性能
Abstract: The thin-walled simulative specimens of DD6 single crystal superalloy were prepared with selected-crystal method.The tensile properties of thin-walled tube with [001] crystallographic orientations were investigated at 850℃ and 980℃,and one half of the specimens were plates with film cooling holes.The results show that the [001] orientation tensile properties with film cooling holes are reduced by 10.5% than without film cooling holes at 850℃,and the [001] orientation tensile properties with film cooling holes correspond with those without film cooling holes at 980℃.It indicates that when the temperature is higher,the effect to tensile properties is more significant.However,the [001] orientation tensile properties with airing condition are increased by 16% than those without airing condition at 980℃.Therefore,the surface state and airing condition play a main role to affect the properties of single crystal thin-walled tube.Especially,it is the airing condition that the mechanical properties have obviously improved.
- DD6 single crystal /
- thin-walled tube /
- film cooling holes /
- airing condition /
- tensile properties

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参考文献(13)

[1]	Cetel A D,Duhl D N.Second generation nickel base single crystal super alloy.TMS Paper 88-GT-244,1988.
[2]	Gell M,Duhl D N,Giamei A F.The development of single crystal superalloy turbine blade.Champion,PA,United States:Superalloys,1980:205-214.
[3]	Harris K,Erickson G L,Sikkenga S L,et al.Development of the rhenium containing superalloys CMSX24 and CM186LC for single crystal blade and directionally solidified vane applications in advanced turbine engines.ASME Paper 92-GT-306,1992.
[4]	史振学,李嘉荣,刘世忠,等.DD6单晶高温合金横向拉伸性能及其断裂行为[J].航空材料学报,2009,29(2):101-104. SHI Zhenxue,LI Jiarong,LIU Shizhong,et al.Transverse tensile properties and fracture behaviour of DD6 single crystal superalloy[J].Journal of Aeronautical Materials,2009,29(2):101-104.(in Chinese)
[5]	LI J R,Zhong Z G,Tang D Z,et al.A low cost second generation single crystal superalloy DD6 //Pollock T M,Kissinger R D,Bowman R R,et al.Superalloys.Warrendale:TMS,2000:777-783.
[6]	Shah Q H,Homma H.Fracture criterion of materials subjected to temperature gradient [J].Int.J.Pressure Vessels and Piping,1995,62(10):59-68.
[7]	Hou N X,Wen Z X,Yue Z F.Tensile and fatigue behavior of thin-walled cylindrical specimens under tempera gradient condition[J].Journal of Materials Science,2007,43(6):1933-1938.
[8]	Liu L R,Jin T,Zhao N R,et al.Formation of carbidesand their effects on the stress rupture of a Ni-base single crystal superalloy[J].Materials Science and Engineering,2003,36(26):191-197.
[9]	卿华,江和甫,温卫东.DD6单晶合金循环蠕变性能研究[J].燃气涡轮试验与研究,2007,20(3):51-56. QING Hua,JIANG Hefu,WEN Weidong.Study on fatigue-creep properties of DD6 NI-base single crystal superalloy[J].Gas Turbine Experiment Reserch,2007 20(3):51-56.(in Chinese)
[10]	李嘉荣,刘世忠,王开国.第二代单晶高温合金DD6的拉伸性能[J].钢铁研究学报,2003,15(7):272-275. LIA Jiarong,LIU Shizhong,WANG Kaiguo.Tensile behavior of second generation single crystal superalloy DD6[J].Journal of Iron and Steel Reserch,2003,15(7):272-275.(in Chinese)
[11]	Lall C,Chin S,Pope D P.The orientation and temperature dependence of Yield stress of Ni₃(Al,Nb) single crystals[J].Metallurgical and Materials Transaction A,1988,10(9):1323-1332.
[12]	赵金乾,李嘉荣,刘世忠,等.第二代单晶高温合金DD6的横向拉伸性能[J].材料工程,2007,12(7):12-14. ZHAO Jinqian,LI Jiarong,LIU Shizhong,et al.Transverse tensile properties of second generation single crystal superalloy DD6[J].Journal of Materials Engineering,2007,12(7):12-14.(in Chinese)
[13]	李影,苏彬,吴学仁.DD6单晶高温合金的低周疲劳寿命估算[J].航空材料学报,2001,21(2):22-25. LI Ying,SU Bin,WU Xuerwen.Lowcycle fatigue behavior of DD6 single crystal[J].Journal of Aeronautical Materials,2001,21(2):22-25.(in Chinese)