Interpass rolling of Ti-6Al-4V wire + arc additively manufactured features for microstructural refinement

By A. McAndrew, M. A. Rosales, Paul A. Colegrove, J. Hönnige, A. Ho, R. Fayolle, Kamal Eyitayo, I. Stan, Punyawee Sukrongpang, Antoine Crochemore and 1 more. 2018

235 citations recorded by the source corpus.

Abstract In-process deformation methods such as rolling can be used to refine the large columnar grains that form when wire + arc additively manufacturing (WAAM) titanium alloys. Due to the laterally restrained geometry, application to thick walls and intersecting features required the development of a new ‘inverted profile’ roller. A larger radii roller increased the extent of the recrystallised area, providing a more uniform grain size, and higher loads increased the amount of refinement. Electron backscatter diffraction showed that the majority of the strain is generated toward the edges of the rolled groove, up to 3 mm below the rolled surface. These results will help facilitate future optimisation of the rolling process and industrialisation of WAAM for large-scale titanium components.

Subfields: Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/b5d643ae24bfb3a24d83073d0a40de8d4abb108a

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In Materials Chemistry

In Mechanical Engineering

Citations in the corpus

Review: The Impact of Metal Additive Manufacturing on the Aerospace Industry (2019, methodology): “fed configuration, as shown in Figure 5 [48,49].”
Wire Arc Additive Manufacturing of Stainless Steels: A Review (2020, unknown): “1 [31].”
Criticality of porosity defects on the fatigue performance of wire + arc additive manufactured titanium alloy (2019, background): “Recent advances on the application of in-situ rolling [18] and inter-pass rolling techniques [19,20] have shown promising results in homogenising the microstructure by making the prior β grains equiaxed and more importantly, eliminating the process-induced defects in the build stage.”