Microstructural evolution of electron beam and wire-arc additively manufactured hypoeutectic and eutectic silumins

A.P. Zykova ORCID logo , A.R. Dobrovolsky, V.M. Semenchuk, A.V. Nikolaeva ORCID logo , V.R. Utyaganova, S.Yu. Nikonov, A.V. Chumaevskii, S.Yu. Tarasov ORCID logo show affiliations and emails
Received 28 March 2023; Accepted 31 May 2023;
Citation: A.P. Zykova, A.R. Dobrovolsky, V.M. Semenchuk, A.V. Nikolaeva, V.R. Utyaganova, S.Yu. Nikonov, A.V. Chumaevskii, S.Yu. Tarasov. Microstructural evolution of electron beam and wire-arc additively manufactured hypoeutectic and eutectic silumins. Lett. Mater., 2023, 13(3) 197-203
BibTex   https://doi.org/10.22226/2410-3535-2023-3-197-203

Abstract

The effects of heat input magnitude and adjustment on microstructure and mechanical characteristics of Al-5%Si and Al-12%Si alloys prepared using electron bean wire feed (EBAM ) and wire-arc additive manufacturing (WAAM) have been investigated.The effects of heat input magnitude and adjustment on microstructure and mechanical characteristics of Al-5 %Si and Al-12 %Si alloys prepared using electron beam wire feed (EBAM) and wire-arc additive manufacturing (WAAM) have been investigated. The effect of aging under cyclic reheating the previously deposited layers has been revealed as depended on the heat input. The most prominent effect of Al-Fe-Si intermetallic particle coarsening was observed on Al-5 %Si after EBAM at maximum used heat input. Less heat input in case of EBAM on Al-12 %Si resulted in formation of aged eutectic banding structures which contributed to the anisotropy of their mechanical characteristics. The spheroidization and coarsening effect of WAAM Al-Si eutectics was less intensive as compared to that of EBAM since it related only to the Al-Fe-Si particle morphology.

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Funding

1. Government research assignment for ISPMS SB RAS - project FWRW-2021-0012