Microstructural study of an age hardenable martensitic steel deformed by equal channel angular pressing

M. Iranpour Mobarake, M. Nili-Ahmadabadi, B. Poorganji, A. Fatehi, H. Shirazi, T. Furuhara, Habibi Parsa, S. Hossein Nedjad

研究成果: Article査読

22 被引用数 (Scopus)

抄録

Effect of large-strain deformation by equal channel angular pressing on the microstructure of a martensitic age hardenable steel, namely 18 Ni (3 0 0) maraging steel, was studied by means of transmission electron microscopy. Equal channel angular pressing was carried out on the solution-annealed steel up to four passes at room temperature through the route Bc using a die with an inner angle of 90°. It was found that the initial martensitic structure of the solution-annealed steel evolves to a heterogeneously deformed structure consisting of ultrafine grains and lamellar dislocation cell blocks. Selected-area electron diffraction patterns revealed large orientation spread within the deformed structure. High density of dislocations and elastic lattice distortions were found in the deformed and aged microstructures.

本文言語English
ページ(範囲)172-176
ページ数5
ジャーナルMaterials Science and Engineering A
491
1-2
DOI
出版ステータスPublished - 2008 9 15

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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