镍基高温合金的SEM和TEM研究

Research of Nickel Base Superalloy Based on SEM and TEM

本文利用扫描电子显微镜(SEM)和透射电子显微镜(TEM)两种手段对GH4169镍基高温合金进行了微观形貌分析、微区成分分析、单晶电子衍射花样标定分析等。结合试样表面丰富的等轴韧窝和微气孔、裂纹形貌的证据,判断该试样在力学行为下发生延性断裂。SEM结合能谱仪(EDS)反映了试样不同区域的成分差异,电子衍射花样标定探究出试样的物相。对镍基高温合金的相关研究起到一定参考作用。

Scanning Electron Microscope(SEM)and Transmission Electron Microscope(TEM)were used to analyze the morphology,micro composition and single crystal electron diffraction pattern of GH4169 nickel-based superalloy.Based on the evidence of abundant equiaxial dimples,micropores and crack morphology,it is concluded that ductile fracture occurs in the sample under mechanical behavior.SEM combined with energy dispersive spectrometer(EDS)reflected the composition difference of different regions of the sample,and the phase of the sample was explored by electron diffraction pattern calibration.It can be used as a reference for related research of nickel base superalloy.