Effect of cooling rate on eutectic constituent and solid solubility of Al-6Cu alloy. (2nd November 2022)

• Record Type: Journal Article
• Authors: Wang, Xiangjie; Yang, Lingfei; Tan, Hongjuan; Yu, Fang; Cui, Jianzhong
• Is Part Of: International journal of cast metals research. Volume 35:Number 5/6(2022)
• Page Start: 131
• Page End: 138
• Publication Date: 2022-11-02
• Subjects: Al-6Cu alloy -- wedge-shaped copper mode casting -- eutectic constituent -- cooling rate -- solid solubility; Metal castings -- Periodicals; Founding -- Periodicals; Foundry research -- Periodicals; Foundry chemistry -- Periodicals; 671.2
• DOI: 10.1080/13640461.2022.2146918
• Languages: English
• ISSNs: 1364-0461

Abstract

ABSTRACT: The ingots of Al-6Cu alloy were prepared by the wedge-shaped copper mode casting with the cooling rates of 2 K/s, 10 K/s, 25 K/s and 100 K/s to explore the effect of cooling rate on the area fraction of eutectic constituent, α-Al lattice parameter and relative solid solubility. The experimental results revealed that when the cooling rate rose from 2 K/s to 10 K/s, the area fraction of the eutectic constituent and the lattice parameter of α-Al decelerated, but the relative solid solubility of α-Al increased. When the cooling rate continued to reach 100 K/s, the area fraction of the eutectic constituent and the α-Al lattice parameter elevated, lowering the α-Al relative solid solubility. According to the model of non-diffusion of solid phase and incomplete mixed solidification of a liquid phase, as for Al-6Cu alloy, relative solid solubility initially increases and then decreases with a boost in cooling rate. The model results are consistent with the experimental results.