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Title:The influence of cooling rate on the microstructure of an Al-Mn-Be alloy
Authors:Rozman, Niko (Author)
Bončina, Tonica (Author)
Anžel, Ivan (Author)
Zupanič, Franc (Author)
Files:.pdf Materiali_in_tehnologije_2008_Rozman_et_al._The_influence_of_cooling_rate_on_the_microstructure_of_an_Al-Mn-Be_alloy.pdf (138,43 KB)
MD5: 74D96B0D80FB18EF1DBB98B8779D467C
URL http://mit.imt.si/Revija/izvodi/mit082/rozman.pdf
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:In ternary Al-Mn-Be alloys a metastable quasicrystalline phase can form at relatively low cooling rates (≈ 100 K/s); however, besides the quasicrystalline phase other phases can also be present. We found that the investigated alloy is very prone to the formation of metastable phases, which are also quasicrystalline. Using different investigation methods we determined the type of phases, their shape, morphology, chemical composition and distribution. Special attention was given to the micro- and nano-sized quasicrystalline particles. When using slow cooling, Al10Mn3 and Be4AlMn were present; however, with a faster cooling rate a quasicrystal approximant and a quasicrystalline phase were formed.
Keywords:aluminium, quasicrystals, cooling rate, microstructure
Year of publishing:2008
Number of pages:str. 65-68
Numbering:Letn. 42, št. 2
ISSN on article:1580-2949
COBISS_ID:675242 New window
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Record is a part of a journal

Title:Materiali in tehnologije
Shortened title:Mater. tehnol.
Publisher:Inštitut za kovinske materiale in tehnologije
COBISS.SI-ID:106193664 New window

Secondary language

Title:Vpliv ohlajevalne hitrosti na mikrostrukturo zlitine Al-Mn-Be
Abstract:V ternarnem zlitinskem sistemu Al-Mn-Be lahko nastane metastabilna kvazikristalna faza pri relativno majhni ohlajevalni hitrosti (≈ 100 K/s), vendar lahko poleg nje nastanejo še druge kristalne faze (predvsem intermetalne faze). Z uporabo različnih raziskovalnih metod smo ugotovili vrsto nastalih faz, kemijsko sestavo in porazdelitev. Ugotovili smo, da je zlitina nagnjena k nastanku metastabilnih faz (tudi kvazikristalnih). Predvsem so zanimivi kvazikristalni delci, ki se pojavljajo v mikro- in nanometrskih velikostih. S počasnim ohlajanjem so nastale faze Al10Mn3 in Be4AlMn, pri hitrem ohlajanju pa so se namesto njih pojavili kvazikristalni aproksimanti in kvazikristalne faze.
Keywords:aluminij, kvazikristali, ohlajevalna hitrost, mikrostruktura


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