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Title:Spremljanje usmerjenega strjevanja evtektične zlitine Pb-Sn
Authors:ID Brunčko, Mihael (Author)
ID Anžel, Ivan (Author)
ID Križman, Alojz (Author)
Files:.pdf Materiali_in_tehnologije_2002_Bruncko,_Anzel,_Krizman_Spremljanje_usmerjenega_strjevanja_evtekticne_zlitine_Pb-Sn.pdf (601,97 KB)
MD5: 1010179A98B3A4282659550CCB45532C
 
URL http://mit.imt.si/Revija/izvodi/mit026/bruncko.pdf
 
Language:Slovenian
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:Formiranje mikrostrukture med strjevanjem, ki je odvisno predvsem od hitrosti strjevalne fronte vSF in temperaturnega gradienta GSF v njeni bližini, močno vpliva na mehanske in druge lastnosti lite zlitine. Zato je za doseganje želenih lastnosti strjenih zlitin potrebno poznanje odvisnosti med vplivnimi parametri strjevanja ter nastajajočo mikrostrukturo. Merilne metode, ki omogočajo sprotno in neporušno spremljanje teh parametrov že v fazi formiranja mikrostrukture, so velik izziv pri razvoju modernih inženirskih materialov. V prispevku obravnavamo možnosti uporabe sprotnega merjenja spremembe električne upornosti med usmerjenim strjevanjem za določitev položaja in hitrosti strjevalne fronte vSF. Spremembo električne upornosti smo merili med usmerjenim strjevanjem vzorca evtektične zlitine Pb-Sn pri različnih hitrostih pomika vzorca iz grelne cone ter konstantnem temperaturnem gradientu peči. Tako dobljene vrednosti hitrosti strjevalne fronte vSF smo primerjali s tistimi, ki smo jih določili pri enakih pogojih strjevanja z meritvijo spremembe temperature s termočleni, nameščenimi v notranjosti vzorca.
Keywords:usmerjeno strjevanje, meritve električne upornosti, evtektična zlitina Pb-Sn
Publication status:Published
Publication version:Version of Record
Year of publishing:2002
Number of pages:str. 367-374
Numbering:Letn. 36, št. 6
PID:20.500.12556/DKUM-53115 New window
ISSN:1580-2949
UDC:669.45:669.6:537.311
ISSN on article:1580-2949
COBISS.SI-ID:268202 New window
NUK URN:URN:SI:UM:DK:EPLQFDP9
Publication date in DKUM:10.07.2015
Views:1771
Downloads:122
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
BRUNČKO, Mihael, ANŽEL, Ivan and KRIŽMAN, Alojz, 2002, Spremljanje usmerjenega strjevanja evtektične zlitine Pb-Sn. Materiali in tehnologije [online]. 2002. Vol. 36, no. 6, p. 367–374. [Accessed 25 March 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=53115
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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:Monitoring of the eutectic Pb-Sn alloy during directional solidification
Abstract:Microstructure evolution during solidification primarily depends on the velocity vSF and the temperature gradient GSF of the solidification front. It has a great influence on the mechanical and other properties of the cast alloys. It is therefore important to know the relationship between the influential solidification parameters and the evolving microstructure if the desired properties of solidified alloys are to be achieved. Thus, the measurement methods that allow online and nondestructive monitoring of these parameters represent a great challenge in the evolution of modern engineering materials. In this paper we discuss the usability of in-situ measurements of electrical resistance changes during the directional solidification for tracing the position and the velocity of the solidification front vSF. The electrical resistance changes were measured during directional solidification on a sample of the Pb-Sn eutectic alloy at different pulling velocities for displacing samples from the heating zone and at a constant temperature gradient of the furnace. The obtained values of the solidification front velocities vSF were subsequently compared with the values determined during the same solidification conditions by measuring the temperature changes with thermocouples, placed inside the sample.
Keywords:directional solidification, electrical resistance measurements, eutectic Pb-Sn alloy


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