Abstract
In this study,the effects of annealing and solution aging heat treatment on the microstructure and me-chanical properties of cold spray additive manufactured(CSAMed)AA2024/Al2O3 composite were inves-tigated.The results showed that both annealing and solution aging enhanced the interfacial bonding be-tween the deposited AA2024 particles in the composite.The tensile properties of CSAMed AA2024/Al203 composite were significantly improved by 13.8％for ultimate tensile strength and 47.8％for elongation af-ter solution aging.Microstructural examination and fractographic analysis showed that the fracture mech-anism between the adjacent AA2024 particles changed from brittle to ductile-dominant mode after heat treatment.However,the interfacial bonding between the AA2024 and A1203 particles cannot be improved.For the improvement of mechanical properties,the solution aging was slightly better than annealing.In addition,low-temperature annealing greatly reduced the anisotropy of the mechanical properties of CSAMed AA2024/Al203 composite.
基金项目
National Natural Science Founda-tion of China(51875471)
Research Fund of the State Key Laboratory of Solidification Processing(NPU China(2021-TZ-01)
NETL
NSTL
万方数据