- 용탕압출법에 의한 Al-Cu 합금 선재의 제조에 관한 연구
- ㆍ 저자명
- 주대헌,이병수,김명호,Joo. Dae-Heon,Lee. Byoung-Soo,Kim. Myung-Ho
- ㆍ 간행물명
- 한국주조공학회지
- ㆍ 권/호정보
- 2004년|24권 6호|pp.331-339 (9 pages)
- ㆍ 발행정보
- 한국주조공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Melt-extrusion process, a metallic melt poured and solidified up to semisolid state in the container can be directly extruded through the die exit to form a product of bar shape without other intermediate processes. In this study, the fabrication characteristics of the process were evaluated with various process parameters, such as preheating temperature of extrusion dies, extrusion temperature and extrusion ratio. AI-Cu alloys were successfully extruded after squeezing out of liquid during melt-extrusion with smaller force compared to the solid extrusion. Soundly AI-Cu alloy bar was fabricated at the preheating temperature of $500{sim}520^{circ}C$. The range of extrusion temperature for soundly melt-extruded AI-Cu alloy bar was increased with increasing extrusion ratio. Mechanical properties of melt-extruded AI-Cu alloy bars were found change with Cu content of the melt-extruded bars due to the occurrence of segregation. The various extrusion temperature yielded equiaxed structure with a grains size about 200 ${mu}m$.