| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document

Title:Characterization of cast Al86Mn3Be11 alloy
Authors:Bončina, Tonica (Author)
Markoli, Boštjan (Author)
Zupanič, Franc (Author)
Files:URL http://dx.doi.org/10.1111/j.1365-2818.2009.03135.x
 
Language:English
Work type:Unknown ()
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:An Al86Mn3Be11 alloy cast into copper mould was subjected to metallographic investigation. The as-cast microstructure consisted of a quasicrystalline icosahedral phase (i-phase), Be4AlMn phase and, occasionally, a hexagonal phase. Al-rich solid solution represented the dominant phase. The chemical compositions of phases were determined using AES. The composition of the Be4AlMn slightly deviated from the stoichiometric composition, whereas the composition of the i-phase was approximately Al52Mn18Be30, containing an appreciable amount of Be. The average composition of the hexagonal phase was Al66Mn21Be13. Deep etching and particle extraction provided a deep insight into the three-dimensional morphology of the i-phase and the hexagonal phase, whereas Be4AlMn was slightly attacked by the etchant. The i-phase was present predominantly in the form of dendrites and a rodlike eutectic phase. The hexagonal phase was primarily in the form of hexagonal platelets, whereas Be4AlMn was rather irregular in shape. The morphology of the i-phase can be explained by predominant growth in 3-fold directions and the lowest energy of the 5-fold planes, leading to the faceting and adopting a pentagonal dodecahedron shape. The brightnesses of phases in the backscattered electron images were rationalized by determining their backscattering coefficients. TEM investigation showed considerable phason strain in the i-phase, and the polycrystalline nature of the Be4AlMn phase.
Keywords:aluminium alloys, deep etching, metallography, particle extraction, quasicrystal
Year of publishing:2009
UDC:620.18
ISSN on article:0022-2720
COBISS_ID:13052182 Link is opened in a new window
NUK URN:URN:SI:UM:DK:7RBBITSZ
Views:1166
Downloads:62
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:Misc.
:
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:AddThis
AddThis uses cookies that require your consent. Edit consent...

Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Record is a part of a journal

Title:Journal of Microscopy
Shortened title:J. Microsc.
Publisher:Blackwell Scientific Publications Ltd
ISSN:0022-2720
COBISS.SI-ID:25765376 New window

Secondary language

Language:English
Keywords:aluminijeve zlitine, globoko jedkanje, metalografija, ekstrakcija delcev, kvazikristali


Comments

Leave comment

You have to log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica