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Title:Effect of cooling rate on the microstructure of an Al94Mn2Be2Cu2 alloy
Authors:Bončina, Tonica (Author)
Markoli, Boštjan (Author)
Zupanič, Franc (Author)
Files:.pdf Metalurgija_2012_Boncina,_Markoli,_Zupanic_Effect_of_cooling_rate_on_the_microstructure_of_an_Al94Mn2Be2Cu2_alloy.pdf (231,30 KB)
MD5: 5B1CBC73C7CA076BDD7B32AB5725AF49
URL http://hrcak.srce.hr/74837
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:In this study the effect of the cooling rate on the microstructure of Al94 Mn2 Be2 Cu2 alloy was investigated. The vacuum induction melted and cast alloy was exposed to different cooling rates. The slowest cooling rate was achieved by the DSC (10 K·min^−1), the moderate cooling rate succeeded by casting in the copper mould (≈1 000 K·s−1) and the rapid solidification was performed by melt spinning (up to 10^6 K·s^−1). The microstructure of the DSC-sample consisted of α-Al matrix, and several intermetallics: τ1-Al29 Mn6 Cu4 , Al4 Mn, θ-Al2 Cu and Be4 Al(Mn,Cu). The microstructures of the alloy at moderate and rapid cooling consisted of the α-Al matrix, i-phase and θ-Al2 Cu. Particles of i-phase and θ-Al2 Cu were much smaller and more uniformly distributed in melt-spun ribbons.
Keywords:Al-alloy, metallography, microstructure, cooling rate, solidification
Year of publishing:2012
Number of pages:str. 167-174
Numbering:št. 2, Letn. 51
ISSN on article:1334-2576
COBISS_ID:1173343 New window
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Record is a part of a journal

Publisher:Hrvatsko metalurško društvo
COBISS.SI-ID:524301593 New window


License:CC BY 4.0, Creative Commons Attribution 4.0 International
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

Title:Utjecaj brizne hlađenja na mikrostrukturu legure Al94Mn2Be2Cu2
Abstract:U ovoj je studiji istraživan utjecaj brzine hlađenja na mikrostrukturu legure Al94Mn2Be2Cu2. Legura sintetizirana vakuumskim indukcionim taljenjem i postupkom lijevanja bila je izložena različitim brzinama hlađenja. Najsporije je bilo hlađenje kod DSC (10 K•min-1), umjerene brzine hlađenja prilikom lijevanja u bakreni kalup (≈1 000 K•s-1) a najviše brzine skrućivanja postignute su pomoću metode melt spinning (do 106 K•s-1). Mikrostruktura DSC uzoraka sastoji se od matrice α-Al i nekoliko intermetalnih faza: τ1-Al29Mn6Cu4, Al4Mn, θ-Al2Cu i Be4Al(Mn,Cu). Mikrostruktura legura umjereno i brzo hlađenih sastoji se od matrice α-Al, i-faze i θ-Al2Cu. Čestice i-faze i θ-Al2Cu mnogo su manje i ravnomjerno raspoređene u trakama izrađenima metodom melt spinning.
Keywords:Al-zlitina, metalografija, mikrostruktura, hitrost ohlajanja, strjevanje


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