Restirring and Reheating Effects on Microstructural Evolution of Al-Zn-Mg-Cu Alloy during Underwater Friction Stir Additive Manufacturing.

ABSTRACT: Friction stir additive manufacturing (FSAM) can be potentially used for fabricating high-performance components owing to its advantages of solid-state processing. However, the inhomogeneous microstructures and mechanical properties of the build attributed to the complex process involving restirring and reheating deserve attention. This study is based on the previous research of the underwater FSAMed 7A04 aluminum alloy and adopts a quasi in situ experimental method, i.e., after each pass of the underwater FSAM, samples were taken from the build for microstructural observation to investigate the restirring and reheating effects on microstructural evolution during the underwater FSAM. Fine-grain microstructures were formed in the stir zone during the single-pass underwater FSAM. After restir

SUBMITTER: Li Y 

PROVIDER: S-EPMC9181392 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature