- Tytuł:
- The Effect of Nickel on Shaping the Structure of Al-Cu-Mn Alloys
- Autorzy:
-
Górny, M.
Sikora, G.
Tyrała, E. - Powiązania:
- https://bibliotekanauki.pl/articles/106939.pdf
- Data publikacji:
- 2017
- Wydawca:
- Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
- Tematy:
-
Al-Cu-Mn alloys
cooling curves
primary α(Al) grains
SDAS
T6 heat treatment - Opis:
- 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.
- Źródło:
-
Journal of Casting & Materials Engineering; 2017, 1, 1; 20-26
2543-9901 - Pojawia się w:
- Journal of Casting & Materials Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł