R.M. Wang
,
C.Z. Li
,
S. W. Zhang and M.G.Yan(1)Institute of Aeronautical Materials
,
Beijing 100095
,
China 2)Laboratory of Atomic Imaging of Solids
,
Institute of Metal Research
,
Chinese Academy of Sciences
,
Shenyang 110015
,
China 3)Beijing Laboratory of Electron Microscopy
,
Chinese Academy of Sciences
,
Beijing 100080
,
China Manuscript received 26 August 1996)
金属学报(英文版)
The microstructures of the grain boundary phases in Fe-Ni-Co-Nb-Ti superalloy have been studied by high resolution electron microscopy (HREM).Besides the Laves phase,three other grain boundary phases have been found and analyzed. The ε phase particles are needle-like with some stacking faults along the(0001) direction. The dominant phase at the grain boundaries is the orthorhombic phase that is also rod-like. High reselution image also confirms the existence of the triclinic phase at the grain boundaries that is irregular and scarce.
关键词:
:high resolution electron microscopy
,
null
,
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