A new type of 0 0 1 junction observed in a (B2) Fe-Al-Ni-B alloy by TEM in situ straining - Mines Saint-Étienne Access content directly
Journal Articles Journal of Alloys and Compounds Year : 2010

A new type of 0 0 1 junction observed in a (B2) Fe-Al-Ni-B alloy by TEM in situ straining

Abstract

Single crystal foils of an FeAl alloy containing Ni and B are strained at elevated temperatures in an in situ dedicated transmission electron microscope (TEM). The observed characteristic "fork-shaped" dislocation configurations are shown to be a kind of "0 0 1 junction". This junction comes from a reaction between two 1 1 1 superdislocations gliding on different {1 1 2} planes; it results in the presence of a long and sessile edge 0 0 1 dislocation along the intersection of the glide planes. Several hypothetical core structures of such a junction are proposed and their possible effects on macroscopic mechanical properties of the alloy are discussed.

Domains

Materials

Dates and versions

emse-00498558 , version 1 (07-07-2010)

Identifiers

Cite

Anna Fraczkiewicz, Brigitte Décamps, David Colas, Olivier Calonne, François Louchet. A new type of 0 0 1 junction observed in a (B2) Fe-Al-Ni-B alloy by TEM in situ straining. Journal of Alloys and Compounds, 2010, 499 (2), pp.176-182. ⟨10.1016/j.jallcom.2010.03.058⟩. ⟨emse-00498558⟩
222 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More