Characterization of γ′-Fe4N precipitates in a compound layer formed by austenitic nitrocarburizing treatment

  • Wang Y
  • Rong Y
  • Chen X
 et al. 
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Abstract

The precipitation of γ′-Fe4N phase from the ε-matrix in a quenched and aged compound layer of 0.2%C steel formed by austenitic nitrocarburizing treatment has been investigated through transmission electron microscopy. The orientation relationship between the γ′ phase and the ε matrix is determined to be "0001"ε// "111"γ′and 〈12̄10〉ε// 〈011〉γ′. The γ′ precipitates appearing in thin plates in the "0001" planes of ε matrix are sometimes observed to be 180 ° related to each other. The mechanism of age-hardening in the compound layer is also discussed. © 1995.

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Authors

  • Yongrui Wang

  • Yonghua Rong

  • Xingkang Chen

  • Gengxiang Hu

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