About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing of Metals: Applications of Solidification Fundamentals
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Presentation Title |
Effects of Nanoscale Compositional Inhomogeneity on the Mechanical Properties of a Cu-9Al Alloy Produced by Wire Arc Additive Manufacturing |
Author(s) |
Hao Wang, Bosheng Dong, Huijun Li, Simon Ringer, Xiaozhou Liao |
On-Site Speaker (Planned) |
Hao Wang |
Abstract Scope |
(MURI and AUSMURI Collaborative Research)
Wire arc additive manufacturing (WAAM) is a technique that uses metal wires as the feedstock and electric arc as the heating source. The manufacturing processes are highly non-equilibrium such that alloys are subjected to abrupt and complex thermal and stress gyrations that are far from those encountered in conventional metallurgical processing. It creates a wholly new process dynamic resulting in local compositional and microstructural inhomogeneity. Compositional homogenization would be a necessary materials processing step for components produced by WAAM. However, recent studies stuggest that nanoscale compositional inhomogeneity is benefitial for ductility retainsion in nanocrystalline alloys. Here, we use WAAM to produce a coarse-grained Cu-9Al alloy with a face-centred cubic structure. Systematic electron microscopy and atom probe tomography studies were conducted to reveal the degree of nanoscale compositional inhomogeneity in the as-fabricated samples. The impact of compositional inhomogeneity on mechanical properties is investigated in detail. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Solidification, Other |