View Full-text

pISSN : 1598-706X / eISSN : 2288-8381


한국주조공학회지 (13권3호 285-294)

Interfacial Characteristics of Al-2024/Al_2O_{3p} Composite Fabricated by Rheo-compocastin

Rheo-compocasting법으로 제조된 알루미나 입자강화 Al합금 복합재료의 계면반응

Suhk-Jong Hyun, ByungeJoon Ye

Kyungpook National University


Aluminum alloy 2024 matrix composites reinforced with Al₂O₃ particles, were prepared by rheo-compocasting, a process which consists of the incoporation distribution of reinforcement by stirring within a semi-solid alloy. The microstructures and characteristics of the interfaces have been studied using optical microscope and scanning electon microscope in 2024 aluminum alloy composites reinforced with Al₂O₃ particles. The main results are as follows: (1) Al₂O₃ particles were well distributed in composites by using rheo-compocasting. (2) As the addition of Al₂O₃ particle increases, the average dendrite numbers and the hardness were increased. (3) Interaction between Al₂O₃ particles and alloy 2024 resulted in the formation of Mg and Cu element rich region around the Al₂O₃ particles.