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Title:Faze v kvazikristalni zlitini $Al_{64,4}Cu_{22,5}Fe_{13,1}$
Authors:ID Bončina, Tonica (Author)
ID Markoli, Boštjan (Author)
ID Anžel, Ivan (Author)
ID Zupanič, Franc (Author)
Files:.pdf Materiali_in_Tehnologije_2007_Boncina_et_al._Faze_v_kvazikristalni_zlitini_Alsub(64,4)-Cusub(23,5)-Fesub(13,1).pdf (504,89 KB)
MD5: 843CD4CAA6B978C7C44FC78E3DB6B857
 
URL http://mit.imt.si/Revija/izvodi/mit076/boncina.pdf
 
Language:Slovenian
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:V ternarnem sistemu Al-Cu-Fe se pojavlja t.i. i-faza (ikozaedrični kvazikristal), ki je termodinamsko ravnotežna faza in s tem sestavni del ravnotežnega faznega diagrama. Na enofazno področje i-faze meji veliko število intermetalnih faz, ki so lahko glede na sestavo zlitine, razmere pri strjevanju in toplotni obdelavi v stabilnem ali metastabilnem ravnotežju z i-fazo. Sinteza enofazne kvazikristalne zlitine je mogoča samo v ozkem koncentracijskem območju in pri primernem načinu toplotne obdelave, zato je poznavanje in ugotavljanje faz ključnega pomena. V raziskavi smo izdelali zlitino $Al_{64,4}Cu_{22,5}Fe_{13,1}$ in vzorce toplotno obdelali na različne načine. Posamezne faze in druge mikrostrukturne značilnosti smo ugotovili z ustrezno metalografsko pripravo vzorcev in metodami svetlobne mikroskopije (SE), vrstične elektronske mikroskopije (SEM), mikrokemične analize (EDS), rentgenske fazne analize (XRD), presevne elektronske mikroskopije (TEM) ter mikrotrdote. Faze smo ločevali tudi glede na njihovo morfologijo in mikrotrdoto (nanoidentifikacija). Prisotnost i-faze smo potrdili z metodama XRD in TEM.
Keywords:Al-Cu-Fe, kvazikristali, metalografija
Publication status:Published
Publication version:Version of Record
Year of publishing:2007
Number of pages:str. 271-277
Numbering:Letn. 41, št. 6
PID:20.500.12556/DKUM-52821 New window
ISSN:1580-2949
UDC:669.71'3'1:620.18
ISSN on article:1580-2949
COBISS.SI-ID:11988502 New window
NUK URN:URN:SI:UM:DK:UU7SO7SC
Publication date in DKUM:10.07.2015
Views:1425
Downloads:136
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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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
ISSN:1580-2949
COBISS.SI-ID:106193664 New window

Secondary language

Language:English
Title:Phase in a quasicrystalline $Al_{64,4}Cu_{22,5}Fe_{13,1}$
Abstract:In the ternary system Al-Cu-Fe an i-phase (icosahedral quasicrystal) is present. It is thermodynamically stable and forms a part of the equilibrium phase diagram. However, according to the chemical composition and conditions during the solidification and heat treatment considerable number of intermetallic phases can take part in stabile or metastabile equilibrium with the i-phase. Consequently, synthesis of onephase quasicrystalline alloy is possible only in narrow concentration range after appropriate heat treatment. In the investigation alloy $Al_{64,4}Cu_{22,5}Fe_{13,1}$ was synthesized and heat treated to increase the fraction of the i-phase. The presence of phases and other microstructural characteristics were determined using appropriate metallographic preparation techniques, light microscopy (LM), scanning electron microscopy (SEM), microchemical analyses (EDS), X-ray diffraction (XRD), transmission electron microscopy (TEM) and nanoidentation measurements.The presence of quasicrystalline phase i was clearly confirmed using XRD and TEM.
Keywords:Al-Cu-Fe, quasicrystal, metallography


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