EBSD Investigation of Crystallographic Orientation in TiB₂-Ni Cermet

Abstract

We have investigated the orientation relationship between TiB₂ particles and Ni binder phase in TiB₂-15 vol.%Ni cermet. About 25 % TiB₂ particles showed the six types of orientation relationships with Ni. These TiB₂/Ni interfaces were delimited by prismatic or basal plane of TiB₂, and the most frequently observed relationship was (0 0 0 1)_TiB2 // (1 1 1)_Ni, [1 1 −2 0]_TiB2 // [−1 1 0]_Ni. This orientation relationship comprised about 50 % of the observed orientation relationships.