TY - JOUR

T1 - Direct measurement of vacancy relaxation by dilatometry

AU - Kotzurek, Jaromir A.

AU - Steyskal, Eva-Maria

AU - Oberdorfer, Bernd

AU - Hohenwarter, Anton

AU - Pippan, Reinhard

AU - Sprengel, Wolfgang

AU - Würschum, Roland

PY - 2016/7/14

Y1 - 2016/7/14

N2 - A model is proposed for directly determining the volume of lattice vacancies by means of dilatometric measurements of the anisotropic irreversible length change which occurs during annealing of lattice vacancies at grain boundaries of shape-anisotropic crystallites. The model is tested using nanocrystalline Ni after the high-pressure torsion deformation which exhibits excess concentration of lattice vacancies and elongated crystallite shape. Different length changes upon annealing parallel and perpendicular to the elongation axis occur from which a vacancy volume can be derived.

AB - A model is proposed for directly determining the volume of lattice vacancies by means of dilatometric measurements of the anisotropic irreversible length change which occurs during annealing of lattice vacancies at grain boundaries of shape-anisotropic crystallites. The model is tested using nanocrystalline Ni after the high-pressure torsion deformation which exhibits excess concentration of lattice vacancies and elongated crystallite shape. Different length changes upon annealing parallel and perpendicular to the elongation axis occur from which a vacancy volume can be derived.

UR - http://www.scopus.com/inward/record.url?scp=84978511544&partnerID=8YFLogxK

U2 - 10.1063/1.4958895

DO - 10.1063/1.4958895

M3 - Article

AN - SCOPUS:84978511544

VL - 109.2016

JO - Applied physics letters

JF - Applied physics letters

SN - 0003-6951

IS - 2

M1 - 021906

ER -