柴禄,黄继华,侯金保,郎波,王立

• 1:北京科技大学材料科学与工程学院
• 2:北京航空制造工程研究所航空发动机工艺研究室

摘要(Abstract)：

采用自制镍基非晶箔片KNi3A对N5单晶高温合金进行过渡液相扩散连接,连接工艺为真空环境中1513 K保温0.25~24 h,对性能样品进行标准热处理。利用扫描电镜对接头的组织结构进行观察和分析,研究焊缝组织随保温时间延长的变化规律,阐述焊缝和母材中γ'相长大和球化机制,并对接头进行高温持久性能测试。结果表明,接头区域由连接区、扩散区和母材区组成;随保温时间的延长,上述3区的界线由于等温凝固过程而逐步变得不明显,并最终得到趋于一致的微观组织,热处理后接头1000℃在125 MPa持久寿命可达母材的90%以上。

关键词(KeyWords)： 单晶高温合金;过渡液相扩散连接;组织;性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 柴禄,黄继华,侯金保,郎波,王立

DOI: 10.13289/j.issn.1009-6264.2014.11.022

参考文献(References)：

• [1]李晓红,毛唯,郭万林,等.DD6单晶合金过渡液相扩散焊工艺[J].焊接学报,2005,26(4):51-54.LI Xiao-hong,MAO Wei,GUO Wan-lin,et al.Transient liquid phase diffusion bonding of a single crystal superalloy DD6[J].Transactions of the China Welding Institution,2005,26(4):51-54.
• [2]叶雷,毛唯,谢永慧,等.定向凝固高温合金IC10瞬态液相(TLP)扩散焊接头组织研究[J].材料工程,2004(3):42-44.YE Lei,MAO Wei,XIE Yong-hui,et al.Research on TLP diffusion bonded joint microstructure of directionally solidfied superalloy IC10[J].Journal of Materials Engineering,2004(3):42-44.
• [3]曹健,宋晓国,郑祖金,等.扩散时间对DD6单晶高温合金TLP接头界面组织的影响[J].焊接学报,2011,32(7):13-16.CAO Jian,SONG Xiao-guo,ZHENG Zu-jin,et al.Effect of diffusion time on interfacial microstructure of TLP joints of DD6 single crystal superalloy[J].Transactions of the China Welding Institution,2011,32(7):13-16.
• [4]郎波,侯金保,吴松.DD32单晶高温合金过渡液相扩散连接[J].材料工程,2010(10):32-37.LANG Bo,HOU Jin-bao,WU Song.Transient liquid phase diffusion bonding of DD32 single crystal superalloy[J].Journal of Materials Engineering,2010(10):32-37.
• [5]Liu J D,Jin T,Zhao N R,et al.Microstructural study of transient liquid phase bonded DD98 and K465 superalloys at high temperature[J].Materials Characterization,2011,62(5):545-553.
• [6]李文,金涛,孙晓峰,等.镍基单晶高温合金TLP连接[J].金属学报,2001,37(11):1165-1168.LI Wen,JIN Tao,SUN Xiao-feng,et al.TLP bonding of Ni-base single crystal superalloy[J].Acta Metallurgica Sinica,2001,37(11):1165-1168.
• [7]Giamei A F,Salkeld R W,Hayes C W.Energy efficient engine high-pressures turbine single crystal vane and blade fabrication technology report[R].NASA-CR-165400,1981.
• [8]Nishimoto K,Saida K,Kim D.et al.Transient liquid phase bonding of Ni-base single crystal superalloy,CMSX-2[J].ISIJ International,1995,35(10):1298-1306.
• [9]Zhou Y,Gale W F,North T H.Modelling of transient liquid phase bonding[J].International Materials Reviews,1995,40(5):181-196.
• [10]陈思成,李长荣,杜振民,等.Ni基高温合金共格强化相平衡形状的能量分析[J].材料热处理学报,2012,33(12):147-151.CHEN Si-cheng,LI Chang-rong,DU Zhen-min,et al.Energetic analysis of equilibrium shapes of coherent precipitates in Ni-base superalloys[J].Transactions of Materials and Heat Treatment,2012,33(12):147-151.
• [11]姚志浩,董建新,陈旭,等.GH738高温合金长期时效过程中γ'相演变规律[J].材料热处理学报,2013,34(1):31-37.YAO Zhi-hao,DONG Jian-xin,CHEN Xu,et al.Gamma prime phase evolution during long-time exposure for GH738 superalloy[J].Transactions of Materials and Heat Treatment,2013,34(1):31-37.
• [12]于秋颖,董建新,张麦仓.GH710高温合金长期时效中的组织演变[J].材料热处理学报,2013,34(3):84-88.YU Qiu-ying,DONG Jian-xin,ZHANG Mai-cang.Microstructure evolution of GH710 superalloy after long time aging[J].Transactions of Materials and Heat Treatment,2013,34(3):84-88.
• [13]肖纪美.合金相与相变[M].北京:冶金工业出版社,2004.

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