|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||Investigating Strain Localization in DMLS TI-6Al-4V Using CPFE Modeling and DIC
||Kartik Kapoor, Todd Book, Michael D Sangid
|On-Site Speaker (Planned)
Ti-6Al-4V, an extensively used titanium alloy, produced via Additive Manufacturing (AM) techniques offers tremendous benefits over conventional manufacturing processes. However, there is inherent uncertainty associated with material properties, preventing their use as critical components. Since these uncertainties arise due to varying microstructures, there is a growing need to link the underlying microstructure to the properties of the final part. This work investigates Ti-6Al-4V produced via direct metal laser sintering (DMLS) by carrying out crystal plasticity finite element (CPFE) simulations and digital image correlation (DIC) on the samples. Possible sites for damage nucleation are identified, which correspond to regions of high plastic strain accumulation. Results indicate that prior beta boundaries play an important role in strain localization within the grains. This is significant as the size and orientation of the prior beta grains may be controlled via AM process parameters.
||Planned: Supplemental Proceedings volume