|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Deformation and Transitions at Interfaces
||The Effect of Microstructure on Strain Localisation in Two-phase Ti-alloys
||Michael Preuss, David Lunt, Joao Quinta da Fonseca
|On-Site Speaker (Planned)
Microstructural effects on mechanical properties are particularly pronounced in Ti-alloys due to the limited number of easy slip systems in the alpha phase.
Of fundamental importance here is the effect of the microstructure on strain localisation. For such comparison, high-resolution digital image correlation (HR-DIC) has been applied to monitor 2D deformation patterns. This technique now enables one to record strain maps with spatial resolutions better than 100 nm in combination with high strain resolution and across hundreds of grains enabling statistical analysis of strain localisation.
In the present paper we will use this experimental methodology to identify the role of various microstructure constituents in Ti-6Al-4V on strain localisation. In addition, the combination of grain orientation mapping based on EBSD and HR-DIC analysis has enabled us to compare shear strain contribution from the various slip systems during plastic deformation, which will be discussed in the presentation.