Surface Hardening and Nitride Precipitation in the Nitriding of Fe-M1-M2 Ternary Alloys Containing Al, V, or Cr

Goro Miyamoto, Shotaro Suetsugu, Kunio Shinbo, Tadashi Furuhara

研究成果: Article査読

13 被引用数 (Scopus)

抄録

Nitride precipitation and resultant surface hardening in nitrided Fe-M1-M2 ternary alloys containing Cr, Al, or V were investigated using transmission electron microscopy and three-dimensional atom probe tomography. The (Al, Cr) and (Cr, V) mixed nitrides are formed by the co-precipitation of these elements during the nitriding of Fe-Al-Cr or Fe-Cr-V alloys. However, the precipitation of V nitrides precedes Al nitride precipitation during the nitriding of the Fe-Al-V alloy, which results in two-step hardening behavior. The addition of Cr or V to the Fe-Al alloy accelerates the precipitation kinetics of Al nitrides by promoting the nucleation of Al nitrides, which leads to substantial surface hardening.

本文言語English
ページ(範囲)5011-5020
ページ数10
ジャーナルMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
46
11
DOI
出版ステータスPublished - 2015 11 1

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • 金属および合金

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