pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (21권6호 343-349)
The Effect of Cooling Rate on the Solidification Behavior and Segregation of 7075 and 7050 Aluminum Alloys
7075 및 7050 알루미늄 합금의 응고 거동 및 편석에 미치는 냉각 속도의 영향
Jeong-Yun Choi, Young-Dong Kwon, Joo-Won Lee, Zin-Hyoung Lee
The effect of cooling rate on the solidification microstmcture and segregation behavior of 7075 and 7050 aluminum alloy was investigated. Samples were solidified with cooling rates from 0.3 to l7°K/sec. Using the cooling curves ofeach sample, liquidus, eutectic and intermetallic reaction temperatures were estimated. The microstiuctures were characterized in terms of dendrite arm spacing and eutectic volume fraction. The segregation behavior of each alloying element of these alloys in various cooling rates was discussed.
Aluminum alloy, 7075, 7050, Cooling rate, Segregation, Cooling curve, Microstructure