|Lower-temperature aluminizing behaviors of a ferritic-martensitic steel processed by means of surface mechanical attrition treatment|
|S.; Wang Guo, Z. B.; Wang, L. M.; Lu, K.
|Source Publication||Surface & Coatings Technology
|Abstract||By means of surface mechanical attrition treatment (SMAT), a gradient nanostructured surface layer was fabricated on a ferritic-martensitic (F-M) steel plate. Its aluminizing behaviors were investigated during a packed aluminization process and a subsequent diffusion annealing treatment at lower temperatures. In comparison with the initial sample, a much thicker Al5Fe2 layer was formed on the SMAT sample after the packed aluminization, with a growth constant of similar to 3 times higher at 600 degrees C. The transformation kinetics from Al5Fe2 phase into AlFe phase and alpha-(Fe,Al) solid solution are also enhanced in the subsequent annealing treatment at similar to 700 degrees C. The enhanced aluminizing kinetics originates from the increased atomic diffusivities by numerous grain boundaries and a higher concentration of vacancies in the nanostructured surface layer. With the determined growth kinetics, a duplex aluminizing process was demonstrated for achieving a gradient surface layer with lower-Al containing aluminides below the tempering temperature of F-M steel. (C) 2014 Elsevier B.V. All rights reserved.|
; wang, z. b.
; wang, l. m.
; lu, k.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.
; wang, zb (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china.
Surface Mechanical Attrition Treatment (Smat)
S.,Wang Guo, Z. B.,Wang, L. M.,et al. Lower-temperature aluminizing behaviors of a ferritic-martensitic steel processed by means of surface mechanical attrition treatment[J]. Surface & Coatings Technology,2014,258:329-336.
S.,Wang Guo, Z. B.,Wang, L. M.,&Lu, K..(2014).Lower-temperature aluminizing behaviors of a ferritic-martensitic steel processed by means of surface mechanical attrition treatment.Surface & Coatings Technology,258,329-336.
S.,et al."Lower-temperature aluminizing behaviors of a ferritic-martensitic steel processed by means of surface mechanical attrition treatment".Surface & Coatings Technology 258(2014):329-336.
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