The plasticity of monoclinic Al13Fe4 particles grown in a spray-formed Al-Fe alloy was examined after being submitted to two deformation modes between 300 and 873K by specially designed semi-in situ compression tests; one was uniform and the other was by indentation. In the uniform mode, cracks propagate through the Al13Fe4 particles along the pentagonal column planes, leaving extremely thin and heavily deformed plastic zones along the cracked faces at 300 and 473K. In contrast, the generation of isolated dislocations and their motion govern the plastic deformation at 673 and 873K. In the indentation mode, local deformation was achieved exclusively by individual dislocations over the whole range of temperature explored. A possible mechanism of dislocation motion in monoclinic Al13Fe4 was discussed based on Burgers vector analyses coupled with the three-dimensional observation of dislocation configurations.

Plastic Deformation of a Monoclinic Al13Fe4 at 300-873K. S.Miyazaki, S.Kumai, A.Sato: Philosophical Magazine, 2010, 90[19], 2597-618