UHPM - 95
J. Phys. IV France 05 (1995) C7-307-C7-313
Temperature and Orientation Dependence of Yield Stress and Plasticity in Molybdenum Single Crystals of High PurityD.V. Lotsko and Yu.V. Milman
Institute for Problems of Materials Science, Ukrainian Academy of Sciences, 3 Krgiganovsky str., 252180 Kiev, Ukraine
In order to study the influence of purification on the strength and plasticity of molybdenum single crystals in bending tests, the investigation was carried out on crystals of 6 orientations and two purity levels (r293K/r4.2K=95000 and 2000 respectively) in the temperature range from 77K to 373K. The dependence of yield stress and ductile-brittle transition temperature on crystal orientation and purity was established. The results are discussed in connection with the peculiarities of dislocation slip and multiplication in bending which are illustrated by X-ray epigrams.
© EDP Sciences 1995