Rheological Modeling of 7075 Aluminum Alloy Semi-Solid Slurry and its Application in the Simulation of SEED Rheocasting Process

Lu，Hongxing; Meng，Xiaoxia; Bunnareaksathya，Nov; Zhu，Qiang

2023

7075 aluminum alloy rheological modeling semi-solid slurry simulation

英语

National Natural Science Foundation of China[52250710160];Science, Technology and Innovation Commission of Shenzhen Municipality[KQTD20170328154443162];

Rheocasting technology has been successfully applied to produce aluminum alloy parts of automobile and communication equipment. However, its application scope is still limited. One reason is that the strength of the applied alloys is limited. In recent years, lots of researchers have tried to use 7075 aluminum alloy in the rheocasting process because this alloy has excellent mechanical properties. In this work, the rheological behavior of 7075 aluminum alloy semi-solid slurry is studied through shear stress-controlled test and shear rate-controlled test by using rotational rheometer. Then the constitutive parameters in Power-Law (PL) model or Carreau-Yasuda (CY) model of non-Newtonian fluid are determined. The models are used to simulate the flow behavior of 7075 aluminum alloy semi-solid slurry in Swirled Enthalpy Equilibration Device (SEED) rheocasting process. The simulation results indicate that the CY model derived from the shear rate sweep test is more suitable for simulating the flow behavior of 7075 aluminum alloy semi-solid slurry during rheocasting than the other models.

10.4028/p-q03DX8

Solid State Phenomena

347

165-169

1012-0394

第一 ; 通讯

2-s2.0-85170557063

Scopus

1662-9779

Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Lu，Hongxing,Meng，Xiaoxia,Bunnareaksathya，Nov,et al. Rheological Modeling of 7075 Aluminum Alloy Semi-Solid Slurry and its Application in the Simulation of SEED Rheocasting Process. 2023-01-01.