Effect of niobium on microstructure and precipitation in As-annealed Sanicro 25 steel

Sheng Yao Huang, Jui Chao Kuo, Wen Ta Tsai, Dong Yih Lin, Yeong Tsuen Pan

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The chemical compositions of Sanicro 25 stainless steel added with different concentrations of niobium (Nb) (0, 0.29, 0.58, and 0.86 wt-%) were investigated. X-ray diffraction analysis showed that the matrix of all the prepared materials was austenite. The average grain size decreased from 426 to 90 µm with the increase in Nb content. Electron backscatter diffraction and energy dispersive X-ray spectroscopy analyses showed that Cr23C6 was the main precipitate in the Nb-free steel, whereas Nb(C, N) were the main precipitates in Nb-containing steel. The increase in Nb content also increased the volume fraction and average particle size of the precipitates.

Original languageEnglish
Pages (from-to)504-511
Number of pages8
JournalIronmaking and Steelmaking
Volume47
Issue number5
DOIs
Publication statusPublished - 2020 May 27

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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