The mechanical properties and microstructures of Aluminum 6056 alloys were investigated for their use in the fabrication of a piton block. The EN-AW6056 alloys exhibited a tensile strength of 375 MPa for a solution treatment temperature of 550 oC for 2 h followed by an aging treatment at 190 oC for 4 h. The microstructures of the heat treated specimen showed that the Mg2Si phase with a size of 3~5 um was dispersed throughout the aluminum matrix when the heat treatment was done. Moreover, in order to identify the forgeability of the specimen, upsetting tests were done. For up to 80 % of the upsetting ratio, the specimen maintained its original shape, and at above 80 % of the upsetting ratio, the specimen underwent crack development. The specimen was successfully forged without any defects with the examined material conditions. The material conditions together with the forging conditions are discussed in terms of the microstructures and mechanical properties.

1. 서 론
 2. 실험 방법
 3. 결과 및 고찰
 4. 결 론
 Acknowledgements
 References

• 김민석(한밭대학교 신소재공학과) | Min Seok Kim
• 정병덕(한밭대학교 신소재공학과) | Hyung Duck Jung
• 박효영((주)진합) | Hyo young Park
• 최정묵((주)진합) | Jeong Mook Choi
• 김정민(한밭대학교 신소재공학과) | Jeong Min Kim
• 박준식(한밭대학교 신소재공학과) | Joon Sik Park Corresponding author