Diffusion of Cr in nanostructured fe and low carbon steel produced by means of surface mechanical attrition treatment

Z. B. Wang, N. R. Tao, W. P. Tong, J. Lu, K. Lu, J. Philibert, D. Beke

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

By means of surface mechanical attrition treatment (SMAT), nanostructured (NS) surface layers were fabricated on a pure iron plate and a low carbon steel plate. Cr diffusion behaviors in the NS Fe phase and the SMAT low carbon steel were investigated. Experimental results showed the activation energy of Cr diffusion in the NS Fe is comparable to that of the GB diffusion, but the pre-exponential factor is much higher. A much thicker Cr-diffusion surface layer was obtained in the SMAT low carbon steel plate than in the coarse-grained one after the same chromizing treatment. The much enhanced diffusivities of Cr in the SMAT samples can be attributed to numerous GBs and triple junctions with a high excess stored energy in the NS surface layer.

Original languageEnglish
Pages (from-to)147-154
Number of pages8
JournalDefect and Diffusion Forum
Volume249
DOIs
Publication statusPublished - 2006

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comminution
low carbon steels
Low carbon steel
surface layers
Surface diffusion
diffusivity
activation energy
Iron
iron
Activation energy

Keywords

  • Diffusion
  • Grain boundary
  • High excess stored energy
  • Nanostructured
  • Surface mechanical attrition treatment

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Diffusion of Cr in nanostructured fe and low carbon steel produced by means of surface mechanical attrition treatment. / Wang, Z. B.; Tao, N. R.; Tong, W. P.; Lu, J.; Lu, K.; Philibert, J.; Beke, D.

In: Defect and Diffusion Forum, Vol. 249, 2006, p. 147-154.

Research output: Contribution to journalArticle

Wang, Z. B. ; Tao, N. R. ; Tong, W. P. ; Lu, J. ; Lu, K. ; Philibert, J. ; Beke, D. / Diffusion of Cr in nanostructured fe and low carbon steel produced by means of surface mechanical attrition treatment. In: Defect and Diffusion Forum. 2006 ; Vol. 249. pp. 147-154.
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AU - Wang, Z. B.

AU - Tao, N. R.

AU - Tong, W. P.

AU - Lu, J.

AU - Lu, K.

AU - Philibert, J.

AU - Beke, D.

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