Residual stress measurement of refractory coatings as a nondestructive evaluation
Due to their good resistance to wear and corrosion, TiC refractory coatings are increasingly applied in certain domains of the nuclear and aerospace industries. Quality control of materials being usually destructive, residual-stress measurements are suggested as a means of a nondestructive quality control. Based on the classical sin/sup 2//PSI/ method, residual stresses are measured for TiC coatings on cemented carbides and steel substrates. Medium tensile residual stresses are obtained in TiC on cemented carbide substrates, while rather large compressive residual stresses appear on steel substrates. A phenomenological interpretation of these stresses is given. The experimental results disprove the generally assumed two-dimensional stress system, confirming thus the existence of stress gradients in the third dimension, and of a threedimensional stress system in the volume sampled by the X-ray beams.
- Research Organization:
- Laboratoire Suisse de Recherches Horlogeres (LSRH), Neuchatel
- OSTI ID:
- 6488915
- Journal Information:
- J. Mater. Energy Syst.; (United States), Vol. 6:4
- Country of Publication:
- United States
- Language:
- English
Similar Records
State of residual stress in laser-deposited ceramic composite coatings on aluminum alloys
The effect of residual stresses on the debonding of coatings; 2: An experimental study of a thermally sprayed system
Related Subjects
REFRACTORIES
NONDESTRUCTIVE TESTING
RESIDUAL STRESSES
STRESS ANALYSIS
CORROSION RESISTANCE
PROTECTIVE COATINGS
STEELS
SUBSTRATES
TENSILE PROPERTIES
TITANIUM CARBIDES
WEAR RESISTANCE
X RADIATION
X-RAY RADIOGRAPHY
ALLOYS
CARBIDES
CARBON COMPOUNDS
COATINGS
ELECTROMAGNETIC RADIATION
INDUSTRIAL RADIOGRAPHY
IONIZING RADIATIONS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
RADIATIONS
STRESSES
TESTING
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties