- Tytuł:
- Crystallization Behavior and Properties of Hypereutectic Al-Si Alloys with Different Iron Content
- Autorzy:
-
Deev, V.
Prusov, E.
Prikhodko, O.
Ri, E.
Kutsenko, A.
Smetanyuk, S. - Powiązania:
- https://bibliotekanauki.pl/articles/1837865.pdf
- Data publikacji:
- 2020
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
aluminium-silicon alloys
hypereutectic alloy
iron-rich compounds
intermetallics phase
crystallization
mechanical properties
stop aluminiowo-krzemowy
stop nadeutektyczny
fazy międzymetaliczne
krystalizacja
właściwości mechaniczne - Opis:
- Understanding the influence of iron impurity on the formation of the structure and the properties of hypereutectic aluminum-silicon alloys are important for achieving the required quality of castings, especially those obtained from secondary materials. In the present work, the influence of different iron contents (0.3, 1.1, and 2.0 wt.%) on the crystallization process, microstructure and mechanical properties of the Al-15% Si alloy was studied. It is shown that the presence of iron impurity in the Al-15% Si alloy leads to increasing the eutectic crystallization time from 6.2 to 7.6 s at increasing the iron content from 0.3 wt.% to 1.1 wt.%, changing the structure of the alloy eutectic in the solid state. The primary silicon and β-Al5SiFe phase coexist in the structure of the Al-15% Si alloys at a temperature below 575°C in the range of iron concentrations from 0 to 2 wt.% in equilibrium conditions. In the experimental alloys structure, the primary crystals of the β-phase were metallographically detected only in the alloys containing 1.1 and 2 wt.% of iron impurity. Increase of the iron content up to 2 wt.% significantly reduces the mechanical properties of the Al-15% Si alloy due to the formation of large platelet-like inclusions of β-Al5SiFe phase.
- Źródło:
-
Archives of Foundry Engineering; 2020, 20, 4; 101-107
1897-3310
2299-2944 - Pojawia się w:
- Archives of Foundry Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł