| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Applications II
|
| Presentation Title |
Study Of Transition In Mechanical Properties Of A356/316L Additively Manufactured Interpenetrating Phase Composites |
| Author(s) |
Jiahao Cheng, Xiaohua Hu, Maxim N. Gussev, Derek A. Splitter, Amit Shyam |
| On-Site Speaker (Planned) |
Jiahao Cheng |
| Abstract Scope |
A356/316L interpenetrating phase composites, fabricated by infiltrating additively-manufactured 316L lattices with molten A356, have shown diverse mechanical properties that are controllable by adjusting volume-fraction and/or topology of 316L reinforcement. Under uniaxial tension, the composites with 40 vol% 316L showed two times higher ductility and tensile-strength compared to the 20 vol% 316L sample at the cost of 27% density increase. Transition from localized deformation and fracture to delocalized damage is observed from 20 vol% to 40 vol% 316L, accompanied with four times increase in energy absorption capacity. This transition makes possible the fabrication of hybrid structural components of tailored properties and weight by printing spatially varying 316L reinforcement. Finite-element analysis was conducted and compared to in-situ digital image correlation to study the mechanism dominating evolution of properties. Inspection of specimens suggested that exceptional damage tolerance is a result of interpenetrating structure. The influence of interface-bonding and altering lattice-structure will be discussed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |