Microstructure Evolution in Pure Al Processed with Twist Extrusion

Autor:	Nobuhiro Tsuji, Sergey Synkov, Zenji Horita, Yan Beygelzimer, Viktor Varyukhin, Dmitry Orlov
Rok vydání:	2009
Předmět:	Materials science Mechanical Engineering Metallurgy Condensed Matter Physics Microstructure Grain size law.invention Cross section (physics) Optical microscope Mechanics of Materials law Perpendicular General Materials Science Extrusion Grain boundary Severe plastic deformation
Zdroj:	MATERIALS TRANSACTIONS. 50:96-100
ISSN:	1347-5320 1345-9678
DOI:	10.2320/matertrans.md200802
Popis:	High purity Al (99.99%) was subjected to severe plastic deformation through twist extrusion at room temperature. Microstructures were examined for 1 pass and 4 passes on the cross section perpendicular to the longitudinal axis of billets using optical microscopy and electron back scatter diffraction analysis. It was shown that a vortex-like material flow was observed on the cross section and this became more intense with increasing number of the pressing. After one pass, subgrain structures with low angle grain boundaries were developed throughout the section but after 4 passes, the microstructure consisted of grains surrounded by high angle boundaries with fraction of 70% in the edge parts. The average grain size at the edge parts is refined to1.6μm. © 2009 The Japan Institute of Metals. (Less)
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::18ef2dc85643a9fb3ebbacfeadc9c789 https://doi.org/10.2320/matertrans.md200802 Zobrazit plný text záznamu