Portal de Periódicos da CAPES

The stacking-fault energy of nickel

1977; Taylor & Francis; Volume: 35; Issue: 5 Linguagem: Inglês

10.1080/14786437708232942

0031-8086

C. B. Carter, S.M. Holmes,

Aluminum Alloy Microstructure Properties

Abstract The weak-beam method of electron microscopy has been used to study dis sociated edge dislocations and faulted dipoles in nickel. Micrographs have been compared with many-beam computed image profiles to deduce values for the dimensions of the defects, and these results are then used in conjunction with anisotropic elasticity theory to obtain the stacking-fault energy, γ, or an upper limit, γmax. The interpretation of these results is discussed and it is concluded that the true value of γ is most likely to lie in the range γ ∼120–130 mJ m−2.