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Title:The characterization of phase transformations in rapidly solidified Al-Fe and Cu-Fe alloys through measurements of the electrical resistance and DSC
Authors:ID Bizjak, Milan (Author)
ID Kosec, Ladislav (Author)
ID Kosec, Borut (Author)
ID Anžel, Ivan (Author)
Files:.pdf Metalurgija_2006_Bizjak_et_al._The_Characterization_of_Phase_Transformations_in_Rapidly_Solidified_Al-Fe_and_Cu-Fe_Alloys_Through_Measur.pdf (1,71 MB)
MD5: E8D92A4E8754347FB9BDA62A400C9C2B
PID: 20.500.12556/dkum/c836404c-e45e-4d5d-bf5f-4792d5707494
 
URL http://hrcak.srce.hr/6467
 
Language:English
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract: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.
Keywords:rapidly solidified Al-Fe alloy, rapidly solidified Cu-Fe alloy, transformations, electrical resistance, differential scanning calorimetry
Publication status:Published
Publication version:Version of Record
Year of publishing:2006
Number of pages:str. 281-286
Numbering:Letn. 45, št. 4
PID:20.500.12556/DKUM-66584 New window
ISSN:1334-2576
UDC:669
ISSN on article:1334-2576
COBISS.SI-ID:639071 New window
NUK URN:URN:SI:UM:DK:YHMSKKTL
Publication date in DKUM:03.07.2017
Views:2113
Downloads:195
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Metalurgija
Publisher:Hrvatsko metalurško društvo
ISSN:1334-2576
COBISS.SI-ID:524301593 New window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:03.07.2017

Secondary language

Language:Croatian
Title:Karakterizacija faznih transformacija brzo skrutnutih Al-Fe i Cu-Fe slitine pomoću mjerenja električne otpornosti i diferencijalno skenirajuće kalorimetrije
Abstract:Za karakterizaciju faznih transformacija slitina tijekom toplinske obrade koriste se različite metode toplinske analize (DTA). Najčešće korištene metode su termogravimetrija, diferencijalno toplinska analiza i diferencijalna skenirajuća kalorimetrija (DSK). Fazne se transformacije odvijaju u dva stadija, tj. nukleacija i rast nove faze. Oba su procesa usko povezana s gibanjem atoma. Brzo skrutnute slitine često sadrže elemente niske difuznosti. Tijekom prijelaza iz nestabilnog u stabilno stanje energetske su promjene male i zato je karakterizacija promjena pomoću DTA i DSK veoma teška i ne mjerljiva. Za vrijeme toplinske obrade mikrostrukturne transformacije brzo skrutnutih Al-Fe i Cu-Fe slitina uspješno su detektirane istodobnim mjerenjem električnog otpora. Određivanjem temperaturnih područja faznih prijelaza ili temperatura, gdje su dinamičke promjene maksimalne, uzorci su toplinski obrađeni i analizirani pomoću skener i transmisijske elektronske mikroskopije.
Keywords:metalurgija, hitro strjena zlitina Al-Fe in Cu-Fe, transformacije, električna upornost, diferencijalna skening kalorimetrija


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