Structure and mechanical behavior of submicrocrystalline α-Fe

Abstract

Structural state, character of plastic flow at various scale levels and mechanical properties of α-Fe subjected to equichannel angular pressing by different deformation routes with subsequent annealing were studied with transmission electron, optical and scanning tunnelling microscopes. It was determined that submicrocrystalline structure causes great localization of deformation near the ends of the specimen. At the same time the most of working part of the specimens remains almost undeformed. Plastic flow is realized by the development of localized deformation meso- and macrobands. The character of propagation of meso- and macrobands governs the shape of stress-strain curves. The annealing of submicrocrystalline α-Fe specimens in the temperature range [523-723] K results in delocalization of plastic deformation.

Original language	English
Title of host publication	Proceedings - KORUS 2003
Subtitle of host publication	7th Korea-Russia International Symposium on Science and Technology
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	123-128
Number of pages	6
Volume	1
ISBN (Electronic)	8978686176, 9788978686174
Publication status	Published - 1 Jan 2003
Event	7th Korea-Russia International Symposium on Science and Technology, KORUS 2003 - Ulsan, Korea, Republic of Duration: 28 Jun 2003 → 6 Jul 2003

Conference

Conference	7th Korea-Russia International Symposium on Science and Technology, KORUS 2003
Country	Korea, Republic of
City	Ulsan
Period	28.6.03 → 6.7.03

Keywords

Annealing
Electron optics
Image motion analysis
Mechanical factors
Optical microscopy
Plastics
Pressing
Scanning electron microscopy
Transmission electron microscopy
Tunneling

ASJC Scopus subject areas

Building and Construction
Pollution
Biotechnology
Social Sciences (miscellaneous)
Medicine (miscellaneous)
Education

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Structure and mechanical behavior of submicrocrystalline α-Fe. / Son, A.; Panin, A.; Ivanov, Y.; Kopylov, V.

Proceedings - KORUS 2003: 7th Korea-Russia International Symposium on Science and Technology. Vol. 1 Institute of Electrical and Electronics Engineers Inc., 2003. p. 123-128 1222412.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Son, A, Panin, A, Ivanov, Y & Kopylov, V 2003, Structure and mechanical behavior of submicrocrystalline α-Fe. in Proceedings - KORUS 2003: 7th Korea-Russia International Symposium on Science and Technology. vol. 1, 1222412, Institute of Electrical and Electronics Engineers Inc., pp. 123-128, 7th Korea-Russia International Symposium on Science and Technology, KORUS 2003, Ulsan, Korea, Republic of, 28.6.03.

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N2 - Structural state, character of plastic flow at various scale levels and mechanical properties of α-Fe subjected to equichannel angular pressing by different deformation routes with subsequent annealing were studied with transmission electron, optical and scanning tunnelling microscopes. It was determined that submicrocrystalline structure causes great localization of deformation near the ends of the specimen. At the same time the most of working part of the specimens remains almost undeformed. Plastic flow is realized by the development of localized deformation meso- and macrobands. The character of propagation of meso- and macrobands governs the shape of stress-strain curves. The annealing of submicrocrystalline α-Fe specimens in the temperature range [523-723] K results in delocalization of plastic deformation.

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