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.

Identyfikatory

DOI

10.24425/afe.2020.133355

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

aluminium-silicon alloys; hypereutectic alloy; iron-rich compounds; intermetallics phase; crystallization; mechanical properties

PL

stop aluminiowo-krzemowy; stop nadeutektyczny; fazy międzymetaliczne; krystalizacja; właściwości mechaniczne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2020
• Tom: Vol. 20, iss. 4
• Strony: 101--107
• Opis fizyczny: Bibliogr. 35 poz., rys., tab., wykr.

Twórcy

autor

Deev V.

• Wuhan Textile University, China
• National University of Science and Technology «MISIS», Russia

autor

Prusov E.

• Vladimir State University named after Alexander and Nikolay Stoletovs, Russia

autor

Prikhodko O.

• Siberian State Industrial University, Russia

autor

Ri E.

• Pacific National University, Russia

autor

Kutsenko A.

• Siberian State Industrial University, Russia

autor

Smetanyuk S.

• Siberian Federal University, Russia

Bibliografia

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