Plastic deformation of CoO single crystals

J. Castaing , M. Spendel , J. Philibert , A. Dominguez Rodriguez , R. Marquez

Constant strain rate compressions along < 001 > have been performed on CoO single crystals (ε ∼ 6 x 10-5 s-1). Yield stresses and work hardening rates have been measured between 77 K and 1 400 K; CoO is very strong when compared to similar compounds. Vickers indentations have been performed on { 100 }, { 110 } and {111 } faces around the Néel temperature, i.e. between 0 °C and 40 °C. Hardness values are low if compared to constant strain rate deformation characteristics; they show a minor anomaly at the Néel temperature.

Mots clés: cobalt compounds; hardness; CoO single crystals; strain rate compressions; work hardening; Vickers indentations; Neel temperature; constant strain rate deformation characteristics; plastic deformation; yield stress

Domaines: Articles anciens

J. Castaing, M. Spendel, J. Philibert, A. Dominguez Rodriguez, R. Marquez. Plastic deformation of CoO single crystals. Revue de Physique Appliquée, 1980, 15 (2), pp.277-283. ⟨10.1051/rphysap:01980001502027700⟩. ⟨jpa-00244726⟩