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Mechanism for the formation of Z-phase in 25Cr-20Ni-Nb-N austenitic stainless steel

Journal Article


Abstract


  • Precipitation behavior of Z-phase (NbCrN) is investigated in 25Cr-20Ni-Nb-N austenitic stainless steel during long-term aging. The early precipitation of secondary NbN appears when the steel is aged for 100 h, and the secondary NbCrN precipitates adhere to the pre-existing NbN particles during the subsequent aging. A semi-coherent relation between (1 1 1)NbN and (1 1 2)NbCrN is identified, which provides favorable sites for the nucleation of secondary NbCrN on secondary NbN. Subsequently, secondary NbN will dissolve to supply niobium and nitrogen for the growth of secondary NbCrN.

Publication Date


  • 2018

Citation


  • Li, Y., Liu, Y., Liu, C., Li, C., & Li, H. (2018). Mechanism for the formation of Z-phase in 25Cr-20Ni-Nb-N austenitic stainless steel. Materials Letters, 233, 16-19. doi:10.1016/j.matlet.2018.08.141

Scopus Eid


  • 2-s2.0-85052203227

Start Page


  • 16

End Page


  • 19

Volume


  • 233

Issue


Place Of Publication


Abstract


  • Precipitation behavior of Z-phase (NbCrN) is investigated in 25Cr-20Ni-Nb-N austenitic stainless steel during long-term aging. The early precipitation of secondary NbN appears when the steel is aged for 100 h, and the secondary NbCrN precipitates adhere to the pre-existing NbN particles during the subsequent aging. A semi-coherent relation between (1 1 1)NbN and (1 1 2)NbCrN is identified, which provides favorable sites for the nucleation of secondary NbCrN on secondary NbN. Subsequently, secondary NbN will dissolve to supply niobium and nitrogen for the growth of secondary NbCrN.

Publication Date


  • 2018

Citation


  • Li, Y., Liu, Y., Liu, C., Li, C., & Li, H. (2018). Mechanism for the formation of Z-phase in 25Cr-20Ni-Nb-N austenitic stainless steel. Materials Letters, 233, 16-19. doi:10.1016/j.matlet.2018.08.141

Scopus Eid


  • 2-s2.0-85052203227

Start Page


  • 16

End Page


  • 19

Volume


  • 233

Issue


Place Of Publication