The Characterization of Phase Transformations in Rapidly Solidified Al-Fe and Cu-Fe Alloys through Measurements of the Electrical Resistance and DSC

For the characterization of the phase transformations in the alloys during the heat treatment the various methods of the thermal analyses are available. Thermogravimetry, differential thermal analysis (DTA) and the differential scanning calorimetry (DSC) are the most frequently used methods. The pha...

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Main Authors: Bizjak, M., Kosec, L., Kosec, B., Anžel, I.
Format: Article
Language:English
Published: Croatian Metallurgical Society 2006-01-01
Series:Metalurgija
Subjects:
Online Access:http://public.carnet.hr/metalurg/Metalurgija/2006_vol_45/No_4/MET_45_4_281_286_Bizjak.pdf
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author Bizjak, M.
Kosec, L.
Kosec, B.
Anžel, I.
author_facet Bizjak, M.
Kosec, L.
Kosec, B.
Anžel, I.
author_sort Bizjak, M.
collection DOAJ
description For the characterization of the phase transformations in the alloys during the heat treatment the various methods of the thermal analyses are available. Thermogravimetry, differential thermal analysis (DTA) and the differential scanning calorimetry (DSC) are the most frequently used methods. The phase transformations proceed in two stages, i.e. nucleation and the growth of the new phase. Both processes are closely linked with the movement of the atoms. Rapidly solidified alloys often contain the elements with the low diffusivity. During the transition from the unstable to the stable state the energy changes are small, therefore the characterization of the changes by DTA, DSC is very difficult and could not be measured. During the heat treatment the phase transformations of the rapidly solidified alloys of Al-Fe and Cu-Fe were successfully detected by the simultaneous measurements of the electrical resistance, and were compared by the DSC method. By determination of the temperature regions of the phase transitions or temperatures, where the dynamics of the changes is maximal, the samples were heat treated and analysed by the scanning and transmission electron microscopy respectively.
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spelling doaj.art-61490b347be3493b94da1ab17d2709912022-12-21T22:47:22ZengCroatian Metallurgical SocietyMetalurgija0543-58461334-25762006-01-01454281286The Characterization of Phase Transformations in Rapidly Solidified Al-Fe and Cu-Fe Alloys through Measurements of the Electrical Resistance and DSCBizjak, M.Kosec, L.Kosec, B.Anžel, I.For the characterization of the phase transformations in the alloys during the heat treatment the various methods of the thermal analyses are available. Thermogravimetry, differential thermal analysis (DTA) and the differential scanning calorimetry (DSC) are the most frequently used methods. The phase transformations proceed in two stages, i.e. nucleation and the growth of the new phase. Both processes are closely linked with the movement of the atoms. Rapidly solidified alloys often contain the elements with the low diffusivity. During the transition from the unstable to the stable state the energy changes are small, therefore the characterization of the changes by DTA, DSC is very difficult and could not be measured. During the heat treatment the phase transformations of the rapidly solidified alloys of Al-Fe and Cu-Fe were successfully detected by the simultaneous measurements of the electrical resistance, and were compared by the DSC method. By determination of the temperature regions of the phase transitions or temperatures, where the dynamics of the changes is maximal, the samples were heat treated and analysed by the scanning and transmission electron microscopy respectively.http://public.carnet.hr/metalurg/Metalurgija/2006_vol_45/No_4/MET_45_4_281_286_Bizjak.pdfrapidly solidified Al-Fe and Cu-Fe alloystransformationselectrical resistancedifferential scanning calorimetry
spellingShingle Bizjak, M.
Kosec, L.
Kosec, B.
Anžel, I.
The Characterization of Phase Transformations in Rapidly Solidified Al-Fe and Cu-Fe Alloys through Measurements of the Electrical Resistance and DSC
Metalurgija
rapidly solidified Al-Fe and Cu-Fe alloys
transformations
electrical resistance
differential scanning calorimetry
title The Characterization of Phase Transformations in Rapidly Solidified Al-Fe and Cu-Fe Alloys through Measurements of the Electrical Resistance and DSC
title_full The Characterization of Phase Transformations in Rapidly Solidified Al-Fe and Cu-Fe Alloys through Measurements of the Electrical Resistance and DSC
title_fullStr The Characterization of Phase Transformations in Rapidly Solidified Al-Fe and Cu-Fe Alloys through Measurements of the Electrical Resistance and DSC
title_full_unstemmed The Characterization of Phase Transformations in Rapidly Solidified Al-Fe and Cu-Fe Alloys through Measurements of the Electrical Resistance and DSC
title_short The Characterization of Phase Transformations in Rapidly Solidified Al-Fe and Cu-Fe Alloys through Measurements of the Electrical Resistance and DSC
title_sort characterization of phase transformations in rapidly solidified al fe and cu fe alloys through measurements of the electrical resistance and dsc
topic rapidly solidified Al-Fe and Cu-Fe alloys
transformations
electrical resistance
differential scanning calorimetry
url http://public.carnet.hr/metalurg/Metalurgija/2006_vol_45/No_4/MET_45_4_281_286_Bizjak.pdf
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