Open AccessОткольная прочность и динамический предел текучести гафния
Author(s) -
А.М. Молодец,
А.С. Савиных,
А.А. Голышев,
Г.В. Гаркушин
Publication year - 2019
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2019.02.47219.17555
Subject(s) - spall , hafnium , materials science , lithium fluoride , spallation , composite material , polymethyl methacrylate , shock (circulatory) , deformation (meteorology) , shock wave , metallurgy , chemistry , zirconium , inorganic chemistry , medicine , physics , quantum mechanics , neutron , polymer , engineering , aerospace engineering
The spall strength and dynamic yield stress of polycrystalline hafnium have been measured in a series of plane-wave shock loading experiments using flat sample–transparent window composite targets, with the transparent windows representing polymethyl methacrylate or lithium fluoride plates arranged on the rear side of a hafnium sample. The front side of the target was subjected to shock impact of a copper striker, the rear surface velocity was measured, and the sample was recovered for subsequent metallographic examination. The results were also used for evaluation of the accuracy of spall strength measurements and the analysis of features of high-rate deformation of hafnium.