The Role of Interface in Additively Manufactured Interpenetrating Composites

Conference · Mon Nov 01 00:00:00 EDT 2021

OSTI ID:1833952

Allen, Jason  ^[1]; Cheng, Jiahao  ^[1]; Hu, Xiaohua ^[1]; Splitter, Derek  ^[1]; Gussev, Maxim N.  ^[1]; Shyam, Amit  ^[1]

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1. ORNL

Additively Manufactured Interpenetrating Composites (AMIPCs) are a relatively new metal-metal chain composite in development for use in high energy absorption systems. In this system, reinforcing phase of additively manufactured continuous lattice configurations 316L austenitic stainless-steel is in melt infiltrated with a matrix phase of A356 aluminum-silicon casting alloy. Measurements and observations of this material system have shown that weakly bonded or open/porous interface between the reinforcement and matrix phases exhibits dramatically different mechanical properties of AMIPCs, which is not currently well understood. In this work, Finite Element Models (FEM) are used to model the effects of interfaces between the composite phases. Mechanical tensile tests measurements of various composite volume fractions and varying degrees of casting infiltration are also examined and used to show consistency with the FEM results. The outcome provides insight into material design criteria and performance predictions for new hybrid material systems with exceptional damage tolerance.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1833952
• Resource Relation: Conference: 2021 Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference (SFF Symposium) - Austin, Texas, United States of America - 8/2/2021 8:00:00 AM-8/4/2021 8:00:00 AM
• Country of Publication: United States
• Language: English