Aluminizing Low Carbon Steel at Lower Temperatures

J Mater Sci Technol ›› 2009, Vol. 25 ›› Issue (04): 433-436.

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Aluminizing Low Carbon Steel at Lower Temperatures

Xiao Si^1)†, Bining Lu²⁾ , Zhenbo Wang¹⁾

1) Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
2) The High School A±liated to Renmin University of China, Beijing 100080, China

Received:2009-03-09 Revised:2009-03-30 Online:2009-07-28 Published:2009-10-10
Contact: X. Si
Supported by:
the National Science Foundation of China (Nos. 50701044 and 50890171)
the Ministry of Science and Technology of China (No. 2005CB623604)

Abstract

Abstract:

This study reports the significantly enhanced aluminizing behaviors of a low carbon steel at temperatures far below the austenitizing temperature, with a nanostructured surface layer produced by surface mechanical attrition treatment (SMAT). A much thicker iron aluminide compound layer with a much enhanced growth kinetics of η-Fe₂Al₅ in the SMAT sample has been observed relative to the coarse-grained steel sample. Compared to the coarse-grained sample, a weakened texture is formed in the aluminide layer in the SMAT sample. The aluminizing kinetics is analyzed in terms of promoted diffusivity and nucleation frequency in the nanostructured surface layer.

Key words: Nanostructured materials, Surface mechanical attrition treatment, Aluminizing,
Diffusion, Nucleation

Xiao Si,Bining Lu,Zhenbo Wang. Aluminizing Low Carbon Steel at Lower Temperatures[J]. J Mater Sci Technol, 2009, 25(04): 433-436.

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Aluminizing Low Carbon Steel at Lower Temperatures

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