Transmission electron microscopy study of plastic deformation in NiZr2
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Plastic deformation mechanisms in the body centred tetragonal (C16-structure) NiZr2 compound have been studied using transmission electron microscopy. Dislocations, stacking faults and microtwins have been characterized. Four families of dislocations have been identified: screw-type (b=[0 0 1]), edge-type ([0 0 1](1 1 0) and  (1¯10) systems) and mixed-type (1/2[1¯11] (110) system). Partial dislocations associated with stacking faults have also been detected and analysed. The plane of the faults is shown to be (1¯10) and the fault vectors 1/4 [1 1 1] and 1/4 [11¯1]. A hard-sphere model illustrating the formation mechanism of these stacking faults is proposed. The microtwins are found to be 60° rotation twins around the [1¯10]* direction and can be described by the stacking faults scheme.
KeywordsPolymer Microscopy Electron Microscopy Transmission Electron Microscopy Plastic Deformation
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- 5.H. Bakker, L. M. Di and D. M. L. R. Cascio, in “Proceedings of the international symposium on mechanical alloying”, Kyoto, Japan, Materials Science Forum Vols 88–90 edited by P. H. Shingu (Trans. Tech Publications, Switzerland, 1992) p. 27.Google Scholar
- 8.D. Galy and L. Boulanger, Phys. Stat. Sol. a139 (1992) K81.Google Scholar