Fabrication of particle-reinforced aluminum alloy composite: role of casting and rolling

ABSTRACT

In this study, Al_0.5CoCrFeNi high-entropy alloy particles (HEAp) were added to aluminum alloy 2024 to prepare aluminum alloy matrix composites. The composites were prepared via melting, casting, and subsequent rolling (hot rolling, cold rolling, or cryorolling). The results reveal that the adding of HEAp can significantly refine the grains during casting. The cryorolled AA2024 matrix composite with 1 weight percent HEAp content had a tensile strength of 543 MPa and 10% elongation. The Al-Cu crystalline phase of the aluminum matrix composites was more finely dispersed after the addition of an appropriate HEAp content and cryorolling, which led to an increase in both strength and ductility.

KEYWORDS:

• Aluminum
• alloys
• composite
• particles
• casting
• deformation
• forming
• manufacturing
• processes
• strength

Acknowledgments

The authors are thankful for financial support from the National Key Research and Development Program (Grant No.: 2019YFB2006500), the Huxiang High-Level Talent Gathering Project of HUNAN Province (Grant No.: 2018RS3015), Innovation Driven Program of Central South University (Grant No.: 2019CX006), the Science and Technology Innovation Program of Hunan Province (Grant No.: 2020RC2002), and the Research Fund of the Key Laboratory of High Performance Complex Manufacturing at Central South University.

Additional information

Funding

This work was supported by the National Key Research and Development Program [2019YFB2006500].