Home Kovove Materialy-Metallic Materials 2016 Metallic Materials Vol. 54 (2016), no. 4, pp.227-232

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Metallic Materials Vol. 54 (2016), no. 4, pp.227-232

Title: Diffusion enhancement of low-temperature pack aluminizing on austenitic stainless steel AISI 304 by deep rolling process

Abstract: The deep rolling process is a mechanical surface treatment which plastically deforms only the surface and near-surface regions. The deep rolled AISI 304 austenitic stainless steel has been investigated to illustrate the near-surface plastic deformation effect on the aluminium diffusion rate in the low-temperature pack aluminizing process. Near-surface properties such as residual stresses and full width at half maximum (FWHM) values were measured using the X-ray diffractometer (XRD). The deep rolled, and non-deep rolled specimens were aluminized using powder pack method at the relatively low temperature of 550 °C for about 2–8 h. A scanning electron microscope (SEM) with energy dispersive X-ray spectrometer (EDS) and XRD were used to characterize the surface layers. It was found that the deep rolled condition shows the higher diffusion coefficient as compared to the non-deep rolled condition. Finally, it can be mentioned that the deep rolling process can enhance the diffusion rate of the pack aluminizing treatment at the temperature of 550 °C.

Keywords: stainless steel, aluminizing, deep rolling, diffusion, mechanical surface treatment
Published online: 08-Jul-2016
Year: 2016, Volume: 4, Issue: 4 Page From: 227, Page To: 232

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