Issue 42

T.V. Tetyakova et alii, Frattura ed Integrità Strutturale, 42 (2017) 303-314; DOI: 10.3221/IGF-ESIS.42.32 312 (a) (b) Figure 10 : The load-displacement curves (a) and inhomogeneous local strain rate and temperature fields (b) for the specimen with 13.5 c l  mm ( 1 ‒ 37 a  mm, 2 ‒ 20 a  mm, 3 ‒ 10 a  mm). Figure 11 : Set of the profiles of the longitudinal strain ( ε yy ), drew along the gauge part ( 1 ) and the peripheral parts ( 2 , 3 ) of the specimen with complicated geometry during the uniaxial tension test C ONCLUSION omplex experimental investigation of the temporal instabilities and the spatial localization due to the Lüders behavior, the Portevin–Le Chatelier effect and the shoulder or necking effect of aluminum-magnesium alloy and carbon steel was carried out on the base of combined use of the advanced test equipment, high-effect measuring systems and high-accuracy facilities. The results provide an important database for the development of the theoretical and numerical description of the material behavior in conditions of the serrated flow appearance, especially of the mechanisms and regularities of the Lüders and PLC bands nucleation and propagation. C