Microstructure-deformation relationship of additive friction stir-deposition Al–Mg–Si

By B. J. Phillips, D. Avery, Tian Liu, O. Rodriguez, C. Mason, J. Jordon, L. Brewer, P. Allison. Materialia, 2019

195 citations recorded by the source corpus.

Abstract This research provides the first description of the process parameter relationship to the microstructure/nanostructure and mechanical properties of Aluminum Alloy 6061 AFS-D deposits. The solid-state, additive friction stir-deposition, process provides a new path for coating, joining, and additively manufacturing materials with high deposition rates (20–30 lb/hour) while avoiding liquid-solid phase transformation defects. As-deposited samples revealed the AFS-D process reduced the average grain size by an order of magnitude over a range of processing conditions. Transmission Electron Microscopy (TEM) and Atom Probe Tomography (APT) analysis established β″ precipitates were dissolved by the AFS-D process and re-precipitated as Mg–Si solute clusters.

Subfields: Aerospace Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/71b1e71858d926d7adc50d61e6b997628a13e146

Citations in the corpus

• In situ investigation into temperature evolution and heat generation during additive friction stir deposition: A comparative study of Cu and Al-Mg-Si (2020, unknown): “The accompanied continuous or discontinuous dynamic recrystallization gives rise to re fi ned, equiaxed grains and excellent mechanical properties [6,10,21] in the as-printed state.”