Effect of laser cladding process parameters on clad quality and in-situ formed microstructure of Fe–TiC composite coatings

Over the past decade, researchers have demonstrated interest in tribology and prototyping by the laser cladding process. In-situ laser cladding enables the formation of a uniform clad by melting the powder to form desired composition from pure powder component. In this research pure Ti, graphite, an...

Full description

Saved in:
Bibliographic Details
Published in:Surface & coatings technology 2010-12, Vol.205 (7), p.2007-2015
Main Authors: Emamian, Ali, Corbin, Stephen F., Khajepour, Amir
Format: Article
Language:English
Subjects:
Applied sciences
Cladding
Coating
Composite coating
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
In-situ laser cladding
Iron
Laser beam cladding
Lasers
Materials science
Mathematical models
Melting
Metallic coatings
Metals. Metallurgy
Microstructure
Particulate composites
Physics
Production techniques
Surface treatment
Surface treatments
Titanium carbide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Over the past decade, researchers have demonstrated interest in tribology and prototyping by the laser cladding process. In-situ laser cladding enables the formation of a uniform clad by melting the powder to form desired composition from pure powder component. In this research pure Ti, graphite, and Fe with max particle sizes of 40μm (0.04mm) are used for in-situ laser cladding on a steel substrate. The effects of laser parameters on the quality of an in-situ formed TiC–Fe based composite clad are investigated. Laser parameters have an important role in clad quality and crack formation. They affect the bonding between clad/substrate and cooling rate. Diverse microstructures have been detected in the clad. Finally a model is developed in order to explain the formation and morphology of TiC. The melting and solidification stages of TiC formation and matrix confirm the suggested model. TiC particles increase the clad hardness to an average of four times greater than substrate's hardness. Experimental methods such as, XRD and SEM are used for phases characterization.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2010.08.087