Open AccessФормирование упругопластических фронтов и откольное разрушение в сплаве АМг6 при ударных воздействиях
Author(s) -
Н.В. Савельева,
Ю.В. Баяндин,
А.С. Савиных,
Г.В. Гаркушин,
С.В. Разоренов,
О.Б. Наймарк
Publication year - 2018
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2018.18.46610.17411
Subject(s) - spall , materials science , shock wave , shock (circulatory) , laser , amplitude , optics , composite material , mechanics , physics , medicine
Full wave profiles were monitored by the laser interferometry method by means of a VISAR laser Doppler velocimeter under shock-wave loading of samples of AMg6 aluminum alloy. Analysis of these profiles was used to study the laws of elastic precursor formation and its amplitude variation during elastic–plastic transition front propagation in samples loaded by a shock wave of variable intensity. Critical stresses leading to the spall fracture of samples were determined as dependent on the strain rate under unloading.