Abstract
Laser powder deposition of thick metallic coatings is a surface engineering technique that provides coatings resistant against high loading impact, severe wear and corrosion at high temperatures. In this work Orientation Imaging Microscopy (OIM) based on Electron Back Scatter Diffraction in a Scanning Electron Microscope was employed as a very powerful instrument for the study of the relationship between processing parameters and the microstructure of individual and overlapping laser tracks at different processing speeds.
OIM provided new insights into the microstructure of laser clad coatings and very useful information concerning the directional grows of individual grains, the solidification texture and the shape of the solidification front during laser processing. Strong correlations between the microstructure, processing parameters as well as mechanical performance were found.
| Original language | English |
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| Title of host publication | TMS 2010 139TH ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS, VOL 2: MATERIALS CHARACTERIZATION, COMPUTATION AND MODELING AND ENERGY |
| Place of Publication | WARRENDALE |
| Publisher | The Minerals, Metals & Materials Society |
| Pages | 601-608 |
| Number of pages | 8 |
| ISBN (Print) | 978-0-87339-752-0 |
| Publication status | Published - 2010 |
| Event | TMS 2010 Annual Meeting Supplemental Proceedings on Materials Processing and Properties - Duration: 14-Feb-2010 → 18-Feb-2010 |
Other
| Other | TMS 2010 Annual Meeting Supplemental Proceedings on Materials Processing and Properties |
|---|---|
| Period | 14/02/2010 → 18/02/2010 |
Keywords
- laser cladding
- microstructure
- orientation imaging microscopy
- COBALT-BASED ALLOY