Relieving micro-strain by introducing macro-strain in a polycrystalline metal surface by cavitation shotless peening

H. Soyama, N. Yamada

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Peening using cavitation impact is called "cavitation shotless peening CSP", since there is no requirement for shot in the process. Micro- and macro-strain of polycrystalline metal peened by CSP were evaluated using X-ray diffraction methods, as the full width at half maximum (FWHM) of the X-ray diffraction profile from the peened surface was decreased, although compressive residual stress was introduced. It was found that CSP reduced the micro-strain in the surface, but simultaneously introduced compressive residual stress, i.e., a macro-strain. The results demonstrate that the micro-strain is relieved by CSP without the need for heat treatment, and is, therefore, a sort of annealing. Thus, CSP can renew the metallic material while the shape itself is maintained.

本文言語English
ページ(範囲)3564-3566
ページ数3
ジャーナルMaterials Letters
62
20
DOI
出版ステータスPublished - 2008 7 31

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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