Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Solidification behaviour of bulk glass-forming alloy systems
Date
2005-1
Author
Akdeniz, Mahmut Vedat
Mehrabov, Amdulla
Metadata
Show full item record
Item Usage Stats
372
views
0
downloads
Cite This
The solidification behaviour and resultant microstructures of bulk glass forming ferrous (Fe60CoSZr10Mo5W2B15) and non-ferrous (Zr65Al10Ni10Cu15) alloy systems have been investigated. It was shown that the suppression of the eutectic reaction during solidification ultimately leads to the formation of an amorphous structure. The characteristic DSC pattern of melting involving a sequence of eutectic and pefitectic like reactions with a high inapitude of reaction enthalpies ratio (AHp/AH,). appear to be essential parameters for high hulk- glass forming ability.
Subject Keywords
Amorphous materials
,
Liquid quenching
,
Thermal analysis
URI
https://hdl.handle.net/11511/28302
Journal
Journal of Alloys and Compounds
DOI
https://doi.org/10.1016/j.jallcom.2004.06.019
Collections
Department of Metallurgical and Materials Engineering, Article
Suggestions
OpenMETU
Core
Solidification and crystallization behaviour of bulk glass forming alloys
Aybar, Sultan; Akdeniz, Mahmut Vedat; Department of Metallurgical and Materials Engineering (2007)
The aim of the study was to investigate the crystallization kinetics and solidification behaviour of Fe60Co8Mo5Zr10W2B15 bulk glass forming alloy. The solidification behaviour in near-equilibrium and non-equilibrium cooling conditions was studied. The eutectic and peritectic reactions were found to exist in the solidification sequence of the alloy. The bulk metallic glass formation was achieved by using two methods: quenching from the liquid state and quenching from the semi-state. Scanning electron microsc...
Solidification behavior, glass forming ability and thermal characteristics of soft magnetic Fe-Co-B-Si-Nb-Cu bulk amorphous alloys
AYKOL, Muratahan; Akdeniz, Mahmut Vedat; Mehrabov, Amdulla (2011-09-01)
The effect of varying Cu content on the bulk glass forming ability (GFA) of (Fe(0.36)Co(0.36)B(0.192)Si-(0.048)Nb(0.04))(100-X)Cu(X) alloys (X = 0, 0.5, 0.75 and 1.0) is revealed by investigating the thermal behaviors and phase competitions upon solidification. The changes in GFA are interpreted in terms of suppression of consecutive solidification reactions via microstructural and thermal features. Instead of the type of the primary crystallization product originating from the prevalent atomic order in the...
Pyrolysis of poly(phenylene vinylene)s with polycaprolactone side chains
Nur, Yusuf; Çolak, Demet; Cianga, Ioan; Yagci, Yusuf; Hacaloğlu, Jale (2008-05-01)
The thermal degradation characteristics of a new macromonomer poly(epsilon-caprolactone) with central 4,4'-dicarbaldehyde terphenyl moieties and poly(phenylene vinylene)s with well defined (E-caprolactone), (PPV/PCL) as lateral substituents were investigated via direct pyrolysis mass spectrometry. The unexpectedly high thermal stability of the macromonomer was attributed to intermolecular acetylation of benzaldehyde yielding a hemiacetal and causing a crosslinked structure during the pyrolysis. Increased th...
Thermal degradation of polystyrene composites. Part II. The effect of nanoclay
KAYA, Hatice; Kaynak, Cevdet; Hacaloğlu, Jale (2016-07-01)
In this work, thermal degradation behavior polystyrene/organoclay nanocomposites containing tribromophenol end-capped brominated epoxy oligomer, (BE) with or without Sb2O3 were investigated systematically via direct pyrolysis mass spectrometry. Incorporation of organically modified montmorillonite into polystyrene, (PS) matrix not only increased thermal stability but also the probability of radical recombination, disproportionation and carbonization reactions causing increase in the char yield. Exfoliation ...
STRUCTURAL STABILITY AND ENERGETICS OF FCC METAL MICROCLUSTERS - EMPIRICAL MANY-BODY POTENTIAL-ENERGY FUNCTION CALCULATION
Erkoç, Şakir (Wiley, 1990-09-01)
The structural stability and energetics of microclusters containing 3 to 7 atoms of f.c.c. metal elements are investigated. A recently developed empirical many‐body potential function (PEF) is used in the calculations, which comprises two‐ and threebody atomic interactions. The PEF satisfies both, bulk cohesive energy and stability condition. It is found that the energetically most stable structures of microclusters are in compact form.
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
M. V. Akdeniz and A. Mehrabov, “Solidification behaviour of bulk glass-forming alloy systems,”
Journal of Alloys and Compounds
, pp. 185–191, 2005, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/28302.