@article{2eef3b8cfba3476ba079913c571eec4d,
title = "Effect of small pre-strain on the resistance of molybdenum [100] single crystal to high strain rate deformation and fracture",
abstract = "The evolution of shock compressive pulses and dynamic tensile (spall) strength of pristine and pre-strained (0.6% and 5.4% compression) samples of pure [100]-oriented molybdenum single crystals were studied in a series of planar impact tests accompanied by continuous monitoring of the free surface velocity of the samples by an optic velocimeter. The impact loading of Mo samples of different thicknesses was produced by copper impactors accelerated in the smooth bore gun up to a velocity of about 350 m/s. Analyzing the recorded waveforms showed that pre-straining results in a substantial decrease of the molybdenum Hugoniot elastic limit while the dynamic tensile (spall) strength increases with pre-straining. The spall fracture of all tested (and spalled) samples was found to be brittle and characterized by a weak dependence of spall strength on the tensile strain rate. The obtained results are discussed in the terms of generally accepted theories of elastic precursor decay in ductile and spall fracture in brittle solids.",
author = "Kanel, {G. I.} and Garkushin, {G. V.} and Savinykh, {A. S.} and Razorenov, {S. V.} and Paramonova, {I. V.} and Zaretsky, {E. B.}",
note = "Funding Information: We express our gratitude to the head of the Department of Growth of Monocrystalline Materials and Materials Science Research at the LUCH Research and Production Association, Research and Development Institute, Federal State Unitary Enterprise, Fedoseev Roman for growing a single crystal of molybdenum as well as for the research conducted to quantify the density of dislocations. The work was carried out within the frame-work of the research and development project “Investigation of the rate dependences of the plastic flow stress of reactor steel and the dynamic strength of concrete, rocks and materials at different strain rates” under No. 17706413348200001060/226/2871-D dated July 31, 2020, and within the State Assignment No. AAAA-A19-119071190040-5 using the equipment of the Moscow Regional Explosive Center for Collective Use of the Russian Academy of Sciences. SEM was carried out as part of the fulfillment of the State Assignment No. 075-00460-21-00 for conducting fundamental scientific research at JIHT RAS. Publisher Copyright: {\textcopyright} 2022 Author(s).",
year = "2022",
month = mar,
day = "7",
doi = "10.1063/5.0082267",
language = "English",
volume = "131",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics",
number = "9",
}