NDLI: Fe-Based Amorphous Coatings on AISI 4130 Structural Steel for Corrosion Resistance

Content Provider	Springer Nature Link
Author	Katakam, Shravana Santhanakrishnan, S. Dahotre, Narendra B.
Copyright Year	2012
Abstract	The current study focuses on synthesizing a novel functional coating for corrosion resistance applications, via laser surface alloying. The iron-based (Fe$_{48}$Cr$_{15}$Mo$_{14}$Y$_{2}$C$_{15}$B) amorphous precursor powder is used for laser surface alloying on AISI 4130 steel substrate, with a continuous wave ytterbium Nd-YAG fiber laser. The corrosion resistance of the coatings is evaluated for different processing conditions. The microstructural evolution and the response of the microstructure to the corrosive environment is studied using x-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Microstructural studies indicate the presence of face-centered cubic Fe-based dendrites intermixed within an amorphous matrix along with fine crystalline precipitates. The corrosion resistance of the coatings decrease with an increase in laser energy density, which is attributed to the precipitation and growth of chromium carbide. The enhanced corrosion resistance of the coatings processed with low energy density is attributed to the self-healing mechanism of this amorphous system.
Starting Page	709
Ending Page	715
Page Count	7
File Format	PDF
ISSN	10474838
Journal	JOM
Volume Number	64
Issue Number	6
e-ISSN	15431851
Language	English
Publisher	Springer US
Publisher Date	2012-06-06
Publisher Institution	The Minerals, Metals & Materials Society (TMS)
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physics Environment Engineering Chemistry/Food Science Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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