Processing Beta Titanium Alloys in Powder-Based Additive Manufacturing

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Advanced Metallic Systems CDT ProjectAdditive Manufacturing (AM) is a novel near-net-shape fabrication technique used to produce solid components by consolidating layers of powder, or wires or ribbons, by partial or full melting. The materials to be deposited are melted by a focussed heat source, provided by an electron beam (e-beam), laser, or plasma or welding arc. Each layer is a 2D section from a final 3D CAD component model i.e., the 3D geometry of a component is formed by building-up a stack of 2-D profiles, layer-by-layer, by local melting.Much of the hype surrounding additive manufacturing technologies has been made around advanced designs; however, a significant value proposition exists to manufacture materials in ways which are only able to be exploited using advanced microstructure control mechanisms. Additive manufacturing offers a unique way of microstructure control with a high degree of design freedom. In order to use this in design, a better understanding of process parameters influence on the microstructure during build is required. This project will use experimental and modelling techniques to understand and optimise the effects of processing parameters of parts manufactured from beta titanium alloys.