Deformation behavior and spalling fracture of a heterophase aluminum alloy with ultrafine-grained and coarse-grained structure subjected to a nanosecond relativistic high-current electron beam

Autor:	S. A. Kitsanov, O. A. Kashin, G. P. Bakach, A. B. Skosyrskii, E. F. Dudarev, Alexander E. Mayer, G. P. Pochivalova, A. B. Markov, M. F. Zhorovkov, A. N. Tabachenko, N. V. Girsova
Rok vydání:	2011
Předmět:	Shock wave Materials science Alloy General Physics and Astronomy chemistry.chemical_element Nanosecond engineering.material Spall chemistry Aluminium Ultimate tensile strength engineering Fracture (geology) Composite material Deformation (engineering)
Zdroj:	ResearcherID
ISSN:	1573-9228 1064-8887
DOI:	10.1007/s11182-011-9674-4
Popis:	The results of a comprehensive experimental–theoretical investigation of the deformation behavior, regular features and mechanism of spalling fracture in an Al–Mg–Li–Zr heterophase aluminum alloy with ultrafineand coarse-grained structure subjected to a nanosecond high-current electron beam with the power density 7·109 W/cm2 are presented. The patterns of formation and propagation of a shock wave are discussed, and so is the behavior of the respective reflected wave, once the former is reflected from the back surface. Common regularities of variation in the thickness of the spalled layer and its plastic deformation degree are observed in the cases of ultrafine- and coarse-grained structure. It is shown that spalling resistance of the Al–Mg–Li–Zr heterophase alloy is controlled by the ultrafine-grained structure formed in the spalling zone under the tensile wave rather than by the initial grain structure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b15c1aa55668f2fbb6bdc5854056ccd https://doi.org/10.1007/s11182-011-9674-4 Zobrazit plný text záznamu Plný text ve formátu PDF