Influence of Growth Rate on Eutectic Spacing, Microhardness, and Ultimate Tensile Strength in the Directionally Solidified Al-Cu-Ni Eutectic Alloy

Journal Article · Sat Dec 15 04:00:00 EST 2018 · Metallurgical and Materials Transactions. B, Process Metallurgy and Materials Processing Science

DOI:https://doi.org/10.1007/S11663-018-1404-7· OSTI ID:22931907

Bayram, Ümit ^[1]; Maraşlı, Necmettin ^[2]

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1. Erciyes University, Department of Physics, Faculty of Science (Turkey)
2. Yıldız Technical University, Department of Metallurgical and Materials Engineering, Faculty of Chemistry and Metallurgical Engineering (Turkey)

In this work, the mechanical properties of the Al-Cu-Ni eutectic alloy, Al-32.5 wt pct Cu-1 wt pct Ni, were investigated in terms of the dependency on growth rates. The Al-Cu-Ni eutectic alloy was directionally solidified at a constant temperature gradient, G = 4.93 K mm{sup −1}, with a wide range of growth rates (V = 9.25 to 2056.68 µm s{sup −1}) using a Bridgman-type directional solidification furnace. The eutectic spacing (λ), microhardness (HV{sub T}), and ultimate tensile strength (σ{sub UTS}) were measured with standard techniques. The dependences of λ, HV{sub T}, and σ{sub UTS} on V for directionally solidified Al-Cu-Ni eutectic alloy were experimentally obtained using regression analysis. The results obtained in the present work were compared with the similar experimental results in the literature. Finally, the elastic energy dependence on growth rates for Al-32.5 wt pct Cu-1 wt pct N alloy was determined from their nominal stress–strain plots.

• OSTI ID: 22931907
• Journal Information: Metallurgical and Materials Transactions. B, Process Metallurgy and Materials Processing Science, Journal Name: Metallurgical and Materials Transactions. B, Process Metallurgy and Materials Processing Science Journal Issue: 6 Vol. 49; ISSN 1073-5615; ISSN MTBSEO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
COPPER ADDITIONS
ENERGY DEPENDENCE
EUTECTICS
FURNACES
MICROHARDNESS
NICKEL ADDITIONS
REGRESSION ANALYSIS
SOLIDIFICATION
STRAINS
STRESSES
TEMPERATURE GRADIENTS
TENSILE PROPERTIES