About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Physical Modeling
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Presentation Title |
Development of Temperature History Profiles for Production of Ti-6Al-4V Using a 1D Layer Model |
Author(s) |
Lonnie Smith, Amit K Verma, Andrew (Drew) Huck, Petrus C. Pistorius, Anthony D. Rollett |
On-Site Speaker (Planned) |
Petrus C. Pistorius |
Abstract Scope |
Directed energy deposition (DED) is an additive process that uses a laser beam to melt a feed of hot wire, which creates a melt pool on the surface of a metallic substrate. The work here seeks to generate temperature history profiles for layer-wise development of parts built using Ti-6Al-4V (Ti64). By utilizing an explicit transient finite-difference method, a simple, 1D layer model that incorporates system parameters and multiple modes of heat transfer, including convective heat loss, is used to produce plausible temperature history profiles. The results achieved with this model are obtained quickly (in comparison to finite element based solutions) and will be used to develop predictions of the fraction of phases that form in the creation of Ti64 parts via DED. Validation of the simulations is achieved by calibrating the model against metallographic information obtained from etching the cross sections of fabricated samples. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |