Solidification and Microstructure of Ni-Containing Al-Si-Cu Alloy

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Fang, Li^1 ; Ren, Luyang^1 ; Geng, Xinyu^1 ; Hu, Henry^1 ; Nie, Xueyuan^1 ; Tjong, Jimi^1

Department of Mechanical, Automotive and Materials Engineering, University of Windsor, Windsor

ON

N9B 3P4, Canada^1

关键词: Cast aluminum alloy;    Cooling curve;    Energy dispersive X ray spectroscopy;    Eutectic phasis;    Intermetallic phasis;    Microstructure analysis;    Second derivatives;    Solidification behaviors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012002/pdf
DOI  :  10.1088/1757-899X/301/1/012002

来源: IOP

【 摘 要 】

2 wt. % nickel (Ni) addition was introduced into a conventional cast aluminum alloy A380. The influence of transition alloying element nickel on the solidification behavior of cast aluminum alloy A380 was investigated via thermal analyses based on temperature measurements recorded on cooling curves. The corresponding first and second derivatives of the cooling curves were derived to reveal the details of phase changes during solidification. The nucleation of the primary α-Al phase and eutectic phases were analyzed. The microstructure analyses by scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS) indicate that different types and amount of eutectic phases are present in the tested two alloys. The introduction of Ni forms the complex Ni-containing intermetallic phases with Cu and Al.