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The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys

Prelaz sa ravnog fronta kristalizacije na ćelijski i dendritni rast kod kristalizacije legure Al-Cu

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2006
0352-51390603303R.pdf (255.5Kb)
Authors
Radojević, Vesna
Valčić, Andreja
Nikolić, Slobodanka
Golubović, Aleksandar
Article (Published version)
Metadata
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Abstract
The evolution of the crystallization front from a planar to a dendritic one as a function of the G L/(Rc 0) parameter was investigated during the crystallization of Al-Cu alloys by the vertical Bridgman method. Six series of alloys with different initial compositions of Cu were solidified at different growth rates. A mathematical model for the heat transfer during vertical Bridgmen crystal growth was developed. The model was solved using the finite element method. The temperature gradient in the melt at the beginning of crystal growth was calculated using the obtained model. Discrete stages of the crystallization front were identified in the experiments, as the ratio G L/(Rc 0) decreased.
U okviru ovog rada ispitivana je transformacija fronta kristalizacije od ravnog ka dendritnoj strukturi kao funkcija parametra GL/(Rc0) pri kristalizaciji legure Al-Cu metodom vertikalni Bridgman. U tom cilju izvedeni su eksperimenti sa šest serija uzoraka različitih početnih koncentracija i različitim brzinama rasta. Izveden je i matematički model procesa rasta kristala metodom vertikalni Bridgman korišćenjem metode konačnih elemenata. Na osnovu matematičkog modela izračunat je temperaturni gradijent u rastopu u trenutku kada započinje rast kristala. U okviru eksperimentalnog opsega sa sniženjem vrednosti parametra GL/(Rc0) dolazi do postepenog razvoja fronta kristalizacije po etapama.
Keywords:
vertical Bridgman / interface shape / crystallization / Cu-Al alloy
Source:
Journal of the Serbian Chemical Society, 2006, 71, 3, 303-312
Publisher:
  • Serbian Chemical Society, Belgrade

ISSN: 0352-5139

WoS: 000237324500012

Scopus: 2-s2.0-33646803842
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_technorep_1006
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1006
Collections
  • Radovi istraživača / Researchers’ publications (TMF)
Institution/Community
Tehnološko-metalurški fakultet
TY  - JOUR
AU  - Radojević, Vesna
AU  - Valčić, Andreja
AU  - Nikolić, Slobodanka
AU  - Golubović, Aleksandar
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1006
AB  - The evolution of the crystallization front from a planar to a dendritic one as a function of the G L/(Rc 0) parameter was investigated during the crystallization of Al-Cu alloys by the vertical Bridgman method. Six series of alloys with different initial compositions of Cu were solidified at different growth rates. A mathematical model for the heat transfer during vertical Bridgmen crystal growth was developed. The model was solved using the finite element method. The temperature gradient in the melt at the beginning of crystal growth was calculated using the obtained model. Discrete stages of the crystallization front were identified in the experiments, as the ratio G L/(Rc 0) decreased.
AB  - U okviru ovog rada ispitivana je transformacija fronta kristalizacije od ravnog ka dendritnoj strukturi kao funkcija parametra GL/(Rc0) pri kristalizaciji legure Al-Cu metodom vertikalni Bridgman. U tom cilju izvedeni su eksperimenti sa šest serija uzoraka različitih početnih koncentracija i različitim brzinama rasta. Izveden je i matematički model procesa rasta kristala metodom vertikalni Bridgman korišćenjem metode konačnih elemenata. Na osnovu matematičkog modela izračunat je temperaturni gradijent u rastopu u trenutku kada započinje rast kristala. U okviru eksperimentalnog opsega sa sniženjem vrednosti parametra GL/(Rc0) dolazi do postepenog razvoja fronta kristalizacije po etapama.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys
T1  - Prelaz sa ravnog fronta kristalizacije na ćelijski i dendritni rast kod kristalizacije legure Al-Cu
EP  - 312
IS  - 3
SP  - 303
VL  - 71
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1006
ER  - 
@article{
author = "Radojević, Vesna and Valčić, Andreja and Nikolić, Slobodanka and Golubović, Aleksandar",
year = "2006",
abstract = "The evolution of the crystallization front from a planar to a dendritic one as a function of the G L/(Rc 0) parameter was investigated during the crystallization of Al-Cu alloys by the vertical Bridgman method. Six series of alloys with different initial compositions of Cu were solidified at different growth rates. A mathematical model for the heat transfer during vertical Bridgmen crystal growth was developed. The model was solved using the finite element method. The temperature gradient in the melt at the beginning of crystal growth was calculated using the obtained model. Discrete stages of the crystallization front were identified in the experiments, as the ratio G L/(Rc 0) decreased., U okviru ovog rada ispitivana je transformacija fronta kristalizacije od ravnog ka dendritnoj strukturi kao funkcija parametra GL/(Rc0) pri kristalizaciji legure Al-Cu metodom vertikalni Bridgman. U tom cilju izvedeni su eksperimenti sa šest serija uzoraka različitih početnih koncentracija i različitim brzinama rasta. Izveden je i matematički model procesa rasta kristala metodom vertikalni Bridgman korišćenjem metode konačnih elemenata. Na osnovu matematičkog modela izračunat je temperaturni gradijent u rastopu u trenutku kada započinje rast kristala. U okviru eksperimentalnog opsega sa sniženjem vrednosti parametra GL/(Rc0) dolazi do postepenog razvoja fronta kristalizacije po etapama.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys, Prelaz sa ravnog fronta kristalizacije na ćelijski i dendritni rast kod kristalizacije legure Al-Cu",
pages = "312-303",
number = "3",
volume = "71",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1006"
}
Radojević, V., Valčić, A., Nikolić, S.,& Golubović, A.. (2006). The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 71(3), 303-312.
https://hdl.handle.net/21.15107/rcub_technorep_1006
Radojević V, Valčić A, Nikolić S, Golubović A. The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys. in Journal of the Serbian Chemical Society. 2006;71(3):303-312.
https://hdl.handle.net/21.15107/rcub_technorep_1006 .
Radojević, Vesna, Valčić, Andreja, Nikolić, Slobodanka, Golubović, Aleksandar, "The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys" in Journal of the Serbian Chemical Society, 71, no. 3 (2006):303-312,
https://hdl.handle.net/21.15107/rcub_technorep_1006 .

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