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- W4366495450 abstract "Herein, to enhance the elevated‐temperature strength of heat‐resistant aluminum alloys to satisfy application requirements, the effect of Ni content (0.5, 1.0, 2.0, 4.0 wt%) on the microstructures and tensile properties of Al–8.4Cu–2.3Ce–1.0Mn–0.2Zr alloy is investigated. The metallographic analysis techniques are used to quantitatively examine the microstructural changes. The skeleton‐like Al 7 Cu 4 Ni phase is formed after the addition of Ni and its morphology is gradually transformed into a coarse reticular‐like shape with Ni content increasing. However, the thermally stable Al 8 CeCu 4 and Al 24 MnCu 8 Ce 3 phases disappear when Ni content exceeds 1.0%. Al–8.4Cu–2.3Ce–1.0Mn–0.2Zr–0.5Ni alloy exhibits the optimal elevated‐temperature tensile performance at 400 °C, and its ultimate tensile strength, yield strength, and elongation at 400 °C reach 105, 85 MPa, and 16.5%, respectively. The optimal tensile performance is attributed to synergistic enhancing action of the thermostable Al 8 CeCu 4 , Al 24 MnCu 8 Ce 3 , Al 16 Cu 4 Mn 2 Ce, and Al 7 Cu 4 Ni phases at the grain boundaries and the nano‐sized Al 20 Cu 2 Mn 3 and Al 2 Cu precipitates inside the grains. The typical brittle fracture is dominating in the five alloys with different Ni contents at ambient temperature, but the fracture mode at 400 °C is changed from ductile fracture to ductile and brittle mixed fracture with the increase of Ni." @default.
- W4366495450 created "2023-04-22" @default.
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- W4366495450 date "2023-05-09" @default.
- W4366495450 modified "2023-10-14" @default.
- W4366495450 title "Enhancement of Elevated‐Temperature Strength in Al–Cu–Ce–Mn–Zr Cast Aluminum Alloy Through Ni Alloying" @default.
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- W4366495450 doi "https://doi.org/10.1002/adem.202300095" @default.
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