Original title: Creep Behaviour and Microstructure of Ultrafine Grained Iron Processed by ECAP
Authors: Král, Petr ; Dvořák, Jiří ; Kvapilová, Marie ; Svoboda, Milan ; Sklenička, Václav
Document type: Papers
Conference/Event: Nanocon 2011, Brno (CZ), 2011-09-21 / 2011-09-23
Year: 2011
Language: eng
Abstract: Pure iron (99.99%) was subjected to equal-channel angular pressing (ECAP) with a die having an internal channel of 90°. The subsequent extrusion passes were performed by route A up to 4 passes. The microstructures of UFG iron were investigated using EBSD (electron back scatter diffraction) and transmission el. microscopy (TEM). Tension creep tests were performed on the as-pressed samples at temperature of 773 K and under applied load 60 MPa. For comparison purposes the same creep test was performed also on the unpressed state. The effect of number ECAP passes on creep behavior of pure Fe was investigated. Results showed that the creep resistance of pure Fe after ECAP is improved in comparison with the unpressed state.
Keywords: creep behaviour; equal-channel angular pressing; ultrafine-grained materials
Project no.: CEZ:AV0Z20410507 (CEP), GPP108/10/P469 (CEP)
Funding provider: GA ČR
Host item entry: NANOCON 2011. Conference Proceedings, ISBN 978-80-87294-23-9

Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0201832

Permalink: http://www.nusl.cz/ntk/nusl-80772


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