Microstructure characterisation and stress analysis of the Ti 48Al 2Ag coating on the near-α titanium alloy

The microstructure and phase composition of the protective Ti 48Al 2Ag coating produced on Timetal 834 by magnetron sputtering have been examined by scanning and analytical transmission electron microscopy (SEM, TEM). TEM investigations revealed that Ti 48Al 2Ag coating consists of two sublayers: ou...

Full description

Saved in:
Bibliographic Details
Published in:Surface & coatings technology 2007-06, Vol.201 (18), p.7635-7640
Main Authors: Moskalewicz, T., Schaffer, B., Manescu, A., Rustichelli, F., Czyrska-Filemonowicz, A.
Format: Article
Language:English
Subjects:
Applied sciences
Coatings
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metals. Metallurgy
Microstructure
Physics
Production techniques
Residual stresses
Surface treatment
Surface treatments
Titanium alloy
Transmission Electron Microscopy (TEM)
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The microstructure and phase composition of the protective Ti 48Al 2Ag coating produced on Timetal 834 by magnetron sputtering have been examined by scanning and analytical transmission electron microscopy (SEM, TEM). TEM investigations revealed that Ti 48Al 2Ag coating consists of two sublayers: outer columnar γ-TiAl and amorphous Ti 5Al 3O 2. Energy-dispersive synchrotron radiation diffraction was applied for stress analysis. The results show that there are tensile residual stresses present within the Timetal 834 substrate and compressive residual stresses within the γ-TiAl sublayer.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2007.02.035