Influence of Ga on the formation of phases in cast Al–Mn-based alloys

Naglič, Iztok (author), Leskovar, Blaž (author), Samardžija, Zoran (author), Markoli, Boštjan (author)

This work deals with the influence of gallium addition on the constitution and formation of the phases in the Al-rich corner of the Al–Mn system during casting. Al-rich binary Al–Mn and ternary Al–Mn–Ga alloys were cast into a copper mould with a cavity diameter of 5 mm. The microstructures of the produced alloys were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, electron backscatter diffraction and X-ray diffraction. The characterization revealed the presence of α$_{Al}$, Al$_6$Mn, λ-Al$_4$Mn, L-Al$_4$Mn, icosahedral quasicrystals (IQCs) and decagonal quasicrystals (DQCs). As the amount of gallium in the synthesized alloys increased, the proportion of the phases varied and IQCs and DQCs were formed. Microanalysis revealed that IQCs contained more gallium and less manganese than DQCs.

• Language: English
• Keywords: casting, microstructure, X-ray diffraction, electron backscatter diffraction, scanning electron microscopy
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: NTF - Faculty of Natural Sciences and Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: 6 str.
• Numbering: Vol. 136, art. 107263
• PID: 20.500.12556/RUL-138684
• UDC: 669
• ISSN on article: 0966-9795
• DOI: 10.1016/j.intermet.2021.107263
• COBISS.SI-ID: 69218563
• Publication date in RUL: 09.08.2022

Record is a part of a journal

• Title: Intermetallics
• Shortened title: Intermetallics
• Publisher: Elsevier
• ISSN: 0966-9795
• COBISS.SI-ID: 15363589

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P1-0195
• Name: Geookolje in geomateriali