LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

Fabrication of Al-Si-Sc alloy bearing AlSi2Sc2 phase using ultrasonically assisted molten salt electrolysis

Photo by aqaisieh from unsplash

Abstracts In this work, an Al-7Si-1.5Sc alloy bearing the strengthening AlSi2Sc2 phase was successfully prepared by the addition of Sc through ultrasonically assisted molten salt electrolysis. The ultrasound transforms the… Click to show full abstract

Abstracts In this work, an Al-7Si-1.5Sc alloy bearing the strengthening AlSi2Sc2 phase was successfully prepared by the addition of Sc through ultrasonically assisted molten salt electrolysis. The ultrasound transforms the lamellar and network-like AlSi2Sc2 phase into the short-bar shapes. The average size of AlSi2Sc2 phase reduces from ∼1500 μm down to ∼150 μm. The mechanical properties of the Al-7Si-Sc alloys have been greatly improved. The Vickers hardness of the Al-7Si-Sc alloy prepared with ultrasound assistance increase from 49 HV up to 85 HV. The ultrasound can enhance nucleation of the pre-existed Al3Sc nuclei that serve as the nucleating substrates for the ternary AlSi2Sc2 phase (through peritectic reaction). Furthermore, the pre-existed Al3Sc nuclei get dispersed under the ultrasound-enhanced melt flow and mass transfer. The final ternary strengthening AlSi2Sc2 phase correspondingly disperse in the Al based matrix. It provides a potential shorter and more effective approach to fabricate Al based alloys with uniformly distributed and refined strengthening particles.

Keywords: alsi2sc2 phase; ultrasonically assisted; molten salt; assisted molten; phase; alloy bearing

Journal Title: Journal of Alloys and Compounds
Year Published: 2019

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.