NDLI: Effects of melt cooling rate on the microstructure and mechanical properties of Al-Cu alloy

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Effects of melt cooling rate on the microstructure and mechanical properties of Al-Cu alloy

Content Provider	Scilit
Author	Wang, Lin Sun, Yu Bo, Lin Zuo, Min Zhao, Degang
Copyright Year	2019
Description	Journal: Materials Research Express In this study, effects of cooling rate on the solidification microstructure and mechanical properties of Al-Cu alloys were investigated by casting in different molds (sand/steel/copper molds). The phase composition, thermodynamic phase transition process and mechanical properties of Al-Cu alloys were studied. The cooling rate has a significant effect on the morphology of primary α-Al phase and θ-Al2Cu phase. When the cooling rate increases, the microstructure is significantly refined and the mechanical properties of Al-Cu alloys are improved. As the Cu content increases before the eutectic point, the content of primary α-Al phase in the alloy decreases to a small amount, and the hardness increases correspondingly as the ratio of intermetallic θ-Al2Cu phase increases in the whole solidified microstructure. In addition, the thermal reaction of Al-Cu alloys was determined according to the peak temperature in the DSC curves, and the results were consistent with the solidification morphology. When the cooling rate is faster, the peak area of DSC curve of Al-Cu alloys is smaller than that of the corresponding sand-cooled sample. It is expected to provide a beneficial guidance for the preparation and application of heat-resistant Al-Cu alloy in the field of foundry alloys.
Related Links	https://iopscience.iop.org/article/10.1088/2053-1591/ab44eb/pdf
ISSN	20531591
e-ISSN	20531591
DOI	10.1088/2053-1591/ab44eb
Journal	Materials Research Express
Issue Number	11
Volume Number	6
Language	English
Publisher	IOP Publishing
Publisher Date	2019-09-01
Access Restriction	Open
Subject Keyword	Journal: Materials Research Express Nuclear Energy and Engineering Mechanical Properties
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Metals and Alloys Biomaterials Electronic, Optical and Magnetic Materials Polymers and Plastics

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