Surface nanocrystalline metallic materials fabricated by near surface severe plastic deformation

Nobuhiro Tsuji, Masahide Sato, Yoritoshi Minamino, Yuichiro Koizumi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The present authors have succeeded in fabricating the surface nanocrystalline materials, in which only subsurface layers have nanocrystalline structures, by near surface severe plastic deformation (NS-SPD) process using simple wire-brushing. Nanocrystals with mean diameters smaller than 100 nm formed at surface layers of various kinds of metallic materials after the NS-SPD processing at ambient temperature. In case of a commercial purity aluminum, the depth of the nanocrystalline layer was about 15 nm from the surface. The surface nanocrystalline aluminum performed significantly higher proof stress than that of the coarse grained material without nanocrystalline surface. Possibility to fabricate surface non-equilibrium materials by the present NS-SPD was also examined.

Original languageEnglish
Title of host publicationMPMD Fifth Global Innovations Proceedings, Surfaces and Interfaces in Nanostructured Materials and Trends in LIGA, Miniaturization, and Nanoscale Materials
EditorsS.M. Mukhopadhyay, S. Seal, N. Dahotre, A. Agarwal, al et al
Pages93-101
Number of pages9
Publication statusPublished - 2004 Jul 15
EventMPMD Fifth Global Innovations Proceedings, Surfaces and Interfaces in Nanostructured Materials and Trends in LIGA, Miniaturization, and Nanoscale Materials - Charlotte, NC., United States
Duration: 2004 Mar 142004 Mar 18

Publication series

NameMPMD Fifth Global Innovations Proceedings, Surfaces and Interfaces in Nanostructured Materials and Trends in LIGA, Miniaturization, and Nanoscale Materials

Other

OtherMPMD Fifth Global Innovations Proceedings, Surfaces and Interfaces in Nanostructured Materials and Trends in LIGA, Miniaturization, and Nanoscale Materials
Country/TerritoryUnited States
CityCharlotte, NC.
Period04/3/1404/3/18

Keywords

  • Aluminum alloys
  • Mechanical property
  • Nanocrystals
  • Non-equilibrium phase
  • Structure
  • Wire-brushing

ASJC Scopus subject areas

  • Engineering(all)

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