Gradient structure formation by severe plastic deformation

M. Danylenko, V. Gorban, Yu Podrezov, S. Firstov, O. Rosenberg, S. Shejkin, F. Morito, Y. Yamabe-Mitarai

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

Severe plastic deformation (SPD) techniques are the best for producing of massive nanostructured materials. The methods of equal channel angular pressure (ECAP) and twist extrusion (TE) are realized by simple shear uniform deformation without change of cross-section sizes of sample. In the case of roll forming (RF) the shear strain is localized in the near-surface layer of metal. Intensity of shear strain in the near-surface layer depends on variation of parameters of deformation and conditions of friction in a contact. Steel 65G (0.65C, 0.3Si, 0.6Mn, 0.3Cr, and 0.3Ni) was deformed by roll forming. Transmission electron microscopy (TEM) of "cross-section" samples was used for studying of gradient structure of deformed material. TEM investigation shown that cell substructure in a near-surface layer have been formed. The depth of deformed layer is approximately 40 micrometers. Average cell size in cross-section direction is about 100 - 200 nm. Thin nanostracture layer with cell size about 20-30 nm was detected. In our opinion such substructure formed due to effect of "good" impurities.

本文言語English
ホスト出版物のタイトルNanomaterials by Severe Plastic Deformation, NanoSPD3 - Proceedings of the 3rd International Conference on Nanomaterials by Severe Plastics Deformation
出版社Trans Tech Publications Ltd
ページ787-792
ページ数6
ISBN(印刷版)0878499857, 9780878499854
DOI
出版ステータスPublished - 2006
外部発表はい
イベント3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3 - Fukuoka, Japan
継続期間: 2005 9月 222005 9月 26

出版物シリーズ

名前Materials Science Forum
503-504
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

Other

Other3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3
国/地域Japan
CityFukuoka
Period05/9/2205/9/26

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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