Plastic flow, structure and mechanical properties in pure Al deformed by twist extrusion

Autor:	Nobuhiro Tsuji, Yan Beygelzimer, Dmitry Orlov, Zenji Horita, Sergey Synkov, Viktor Varyukhin
Rok vydání:	2009
Předmět:	Materials science Mechanical Engineering Isotropy Plasticity Condensed Matter Physics law.invention Optical microscope Mechanics of Materials law Ultimate tensile strength Vickers hardness test General Materials Science Extrusion Severe plastic deformation Composite material Ductility
Zdroj:	Materials Science and Engineering: A. 519:105-111
ISSN:	0921-5093
DOI:	10.1016/j.msea.2009.06.005
Popis:	Twist extrusion (TE) is known as one of newly developed, but still moderately studied severe plastic deformation methods. This research was initiated to conduct a detailed study of structure-properties relationship evolution during TE processing. The evolution of macrostructure, Vickers hardness and tensile properties was studied in 99.99% purity aluminum during twist extrusion processing at room temperature up to 4 TE passes (total average equivalent strain of ∼4.8). The process resulted in almost homogeneously refined structure that cannot be resolved optically. Significant increase in Vickers hardness, yield strength and ultimate tensile strength with moderate degradation in ductility of Al was observed. Apart from some structural inhomogeneity, all the mechanical properties were almost homogeneous and isotropic after four TE passes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f18f9c261ce297132529aef4b26a1ff5 https://doi.org/10.1016/j.msea.2009.06.005 Zobrazit plný text záznamu Full Text from ScienceDirect