Local Strain Imaging during Mechanical Loading of Lamellar Microstructures in Titanium Based Alloys

L. Babout; J. Quinta Da Fonseca; Michael Preuss

doi:10.4028/www.scientific.net/AMM.1-2.159

Paper Titles

Determination of Tensile and Compressive Stress Strain Curves from Bend Tests
p.133

Determination of Stress Intensity Factors for an Interfacial Crack in a Bi-Material by Digital Photoelasticity
p.139

Mechanical Property Mapping Using Image Correlation and Electronic Speckle Interferometry
p.147

Stress Analysis of Holes in Thick Plates
p.153

Local Strain Imaging during Mechanical Loading of Lamellar Microstructures in Titanium Based Alloys
p.159

Industrial Applications of Thermoelastic Stress Analysis
p.165

Photoelastic Investigation of Friction and Residual Stress in Shrink-Fitted Shafts and Hubs
p.171

Development of Metallic Digital Strain Gauges
p.179

Detecting Damage in Graphite/Epoxy Composites Using Impedance-Based Structural Health Monitoring
p.185

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 1-2Local Strain Imaging during Mechanical Loading of...

Local Strain Imaging during Mechanical Loading of Lamellar Microstructures in Titanium Based Alloys

Abstract:

In this work optical microscopy in situ tensile testing has been carried out to study the localisation of surface strain in fully lamellar titanium alloys. The localised strain was measured by analysing the recorded optical micrographs using image correlation, and the orientation of the a lamellae colony was determined by using Electron Back Scatter Diffraction (EBSD). The results show a localisation of strain, which seems to depend on the crystallographic orientation of the a lamellae colony in the lamellar microstructure. No significant strain was observed in the former b grain boundary region.