About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
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Additive Manufacturing Modeling and Simulation: Microstructure, Mechanics, and Process
|
Presentation Title |
Ductile Fracture of Ti-6Al-4V Made by Powder Bed Fusion Additive Manufacturing |
Author(s) |
Allison M. Beese, Alexander Wilson-Heid |
On-Site Speaker (Planned) |
Allison M. Beese |
Abstract Scope |
Additively manufactured Ti-6Al-4V manufactured via laser powder bed fusion (L-PBF) was subjected mechanical tests to investigate the impacts of microstructure on deformation and fracture behavior. To study the material’s plasticity and fracture behavior under multiaxial loads, tests were performed over a wide range of tension and tension/shear stress states, and in two material directions. A plasticity model was calibrated and validated, which enabled the study of ductile fracture. An experimental/computational approach was used to identify the loading history of stress state and strain accumulation to the point of fracture under the stress states studied. This presentation will describe the fracture models used to capture these data as well as the impact of defects on fracture of this alloy. |