Nanostructural and nanoelemental analysis of metastable M3C-type carbides with alloy-rich layer in heat resistant 2Cr-martensitic steel

K. Kaneko, K. Fujita, A. Sadakata, Y. Tomokiyo, S. Matsumura

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A combination of structural analysis and analytical investigation by transmission electron microscopy was employed to investigate precipitated carbides on 2Cr-steel. Spectral and image analysis by energy dispersive X-ray spectroscopy (EDS), and energy-filtered images in a transmission electron microscopy revealed compositions of precipitated carbides from both boundaries. The presence of concentration gradient of alloy elements within the precipitated carbide, were shown by EDS and energy-filtering transmission electron microscopy. The results indicate that the rate-controlling process should be governed by not only the diffusion of depletion layer but also that of alloy elements within the carbides. It is therefore necessary to consider these phenomena to model the rate-controlling process, for further discussion of the growth mechanisms of the carbides in steels.

Original languageEnglish
Pages (from-to)761-765
Number of pages5
JournalScripta Materialia
Volume48
Issue number6
DOIs
Publication statusPublished - Mar 1 2003

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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