The Effect of Nickel on Shaping the Structure of Al-Cu-Mn Alloys

• Autorzy: Górny M. , Sikora G. , Tyrała E.
• Języki publikacji: EN

Abstrakty

EN

This study investigated the effect of nickel on shaping the structure of aluminum alloys of the Al-Cu-Mn type in the “as-cast” condition and after heat treatment according to the T6 procedure. The aluminum alloys of type Al-5%Cu-1%Mn, containing nickel in a range of up to 1.9%, were taken into consideration in this work. Experiments were carried out for thin-walled thickness casting (g = 5 mm) and for reference casting with a wall thickness of g = 35 mm. Metallographic investigations of both the macro- and micro-structure were conducted to estimate the secondary dendrite arm spacing (SDAS), average diameter (dav) of the primary α (Al) grains, and surface fraction of the interdendritic phases (f). Moreover, the degree of dissolution of these interdendritic phases during the solution treatment process was determined. An SEM-EDS analysis was conducted, from which it follows that the addition of nickel at the level of 0.5% changes the un-dissolved particles from a needle-like β-Fe shape to blocky and coagulated. Higher additions of nickel starting from 0.88%) give rise to as many as four phases with higher copper content, the deficit of which results in the smaller strengthening effect of α (Al) dendrites.

Słowa kluczowe

EN

Al-Cu-Mn alloys; cooling curves; primary α(Al) grains; SDAS; T6 heat treatment

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: Journal of Casting & Materials Engineering
• Rocznik: 2017
• Tom: Vol. 1, no. 1
• Strony: 20--26
• Opis fizyczny: Bibliogr. 20 poz., fot., tab., wykr.

Twórcy

autor

Górny M.

• AGH University of Science and Technology, Faculty of Foundry Engineering

autor

Sikora G.

• AGH University of Science and Technology, Faculty of Foundry Engineering

autor

Tyrała E.

• AGH University of Science and Technology, Faculty of Foundry Engineering

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).