Influence of Continuous Casting Speeds on Cast Microstructure and Mechanical Properties of an ADC14 Alloy

Metals

Eunkyung Lee¹  Yoon-Seok Lee²  Yuya Makino²  Jun Nitta² 

[1] Department of Ocean Advanced Materials Convergence Engineering, Korea Maritime and Ocean University, Busan 49112, Korea;Graduate School of Natural Science and Technology, Okayama University, Okayama 700‑0082, Japan;

关键词: aluminum alloy;    casting speed;    solidification;    Ohno continuous casting;    gravity casting;    dendritic spacing;   

DOI  :  10.3390/met10050625

来源: DOAJ

【 摘 要 】

To improve the mechanical properties of the casting alloys, various attempts have been made to use alternative casting technologies. The Ohno continuous casting (OCC) process is a unidirectional solidification method, which leads to high-quality cast samples. In this study, the Al‐Si‐Cu‐Mg alloy was cast at casting speeds of 1 mm/s, 2 mm/s, and 3 mm/s, by the OCC process. The aim of this study is to investigate the effects of the casting process parameters, such as casting speeds and cooling conditions, on the crystallization characteristics and mechanical properties of OCC‐Al‐Si‐Cu‐Mg alloy. Particularly, secondary dendrite arms spacing of α-Al dendrites in OCC samples significantly decreases with increasing casting speed. Moreover, the mean tensile strength of the samples, produced at the highest casting speed of 4.0 mm/s, is significantly higher than that for the samples produced at a casting speed of 1.0 mm/s.

【 授权许可】

Unknown