Franc Zupanič (Author), Tonica Bončina (Author), Borivoj Šuštaršič (Author), Ivan Anžel (Author), Boštjan Markoli (Author)

Abstract

Microstructures of two alloys with the nominal compositions of Al92Mn3Be5 and Al89Mn6Be5 were characterized in the initial as-cast condition (after vacuum induction melting and casting) and after melt spinning. In the initial conditions, both alloys consisted of an aluminum-rich solid solution and two metastable intermetallic phases: Be4AlMn and Al10Mn3(Be). Both alloys melted over a rather large temperature range (between 230 °C and 310 °C). This was the main reason for the presence of unmelted particles in the melt-spun ribbons. Nonetheless, with the use of optimized melt-spinning parameters a microstructure composed of the Al-rich solid solution and finely dispersed quasicrystalline particles in ribbons with thicknesses ranging from 30-200 m was achieved. The dispersion of quasicrystalline particles was finest on the wheel side of the thinnest ribbons, attaining microhardness values between 250HV and 300 HV.

Keywords

preiskava materialov;litje na vrteče kovinsko kolo;metalografija;mikrostruktura;aluminijeve zlitine;trakovi;kvazikristali;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL NTF - Faculty of Natural Sciences and Engineering
UDC: 620.18:669.715
COBISS: 11868950 Link will open in a new window
ISSN: 1044-5803
Views: 1507
Downloads: 104
Average score: 0 (0 votes)
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Other data

Secondary language: English
Secondary keywords: melt spinning;metallography;microstructure;aluminium alloys;melt-spun ribbons;quasicrystalls;
URN: URN:SI:UM:
Pages: str. 1245-1251
Volume: ǂVol. ǂ59
Issue: ǂno ǂ9
Chronology: Sep. 2008
DOI: 10.1016/j.matchar.2007.10.007
ID: 8718590
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