Acta Metallurgica Sinica (English Letters) ›› 1992, Vol. 5 ›› Issue (2): 76-81.

• Research paper • Previous Articles     Next Articles

SYMMETRICAL SISF IN DEFORMED Ni_3Al AND ITS FORMATION MECHANISM

YAN Wen Xi′an Institute of Technology,Xi′an,China   

  • Received:1992-04-25 Revised:1992-04-25 Online:1992-04-25 Published:2009-10-10

Abstract: The symmetrical superlattice intrinsic stacking faults(SISFs)formed on {111} planes are the predominant crystal defects in polycrystalline Ni_3AI after slight deformation at room temper- ature.The formation of this kind of SISF is resulted from the dipoles which are distributed on the neighboring {111} planes after reorientation,dissociation and annihilation under applied stress.

Key words: deformed Ni_3Al, symmetrical stacking fault, formation mechanism