Title of article :
Mechanical characteristics, failure regularities, and dimple structures on failure surfaces of Ti–6Al–4V ‘ELI’ ultrafine-grained alloy at temperatures from 300 to 4.2 K
Author/Authors :
Tabachnikova، نويسنده , , Elena D. and Podolskiy، نويسنده , , Aleksey V. and Bengus، نويسنده , , Vladimir Z. and Smirnov، نويسنده , , Sergey N. and Bidylo، نويسنده , , Mikhail I. and Csach، نويسنده , , Kornel and Miskuf، نويسنده , , Jozef and Saitova، نويسنده , , Lilya R. and Semenova، نويسنده , , Irina P. and Valiev، نويسنده , , Ruslan Z.، نويسنده ,
Abstract :
Low temperature mechanical characteristics in quasistatic uniaxial tension and compression have been studied for ultrafine-grained structural states of Ti–6Al–4V ELI (extra-low interstitials content) alloy processed by equal channel angular pressing. Values of the yield stress and the uniform strain at 300, 77, and 4.2 K have been compared for structural states of the Ti–6Al–4V ELI alloy that differ in the average grain size and morphology of α and β phases. Microstructural regularities of failure surfaces and statistical distributions of dimple sizes on the failure surfaces have been studied for different structural states and temperatures.
Keywords :
mechanical properties , Dimples , cryogenic temperatures , Equal channel angular pressing
