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STS-Al-Mg 3-ply 이종금속소재 계면 미세 조직 및 기계적 특성에 미치는 열기계적 처리의 영향
김정수(J. Kim),이광석(K.S. Lee),조유미(Y.M. Jo),이영선(Y.S. Lee),이성학(S. Lee),장영원(Y.W. Chang) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.10
Roll bonding between STS and Mg alloy by inserting aluminum alloy is one of the best ways to produce lightweight 3-ply laminated composite to circumvent the difficulty of direct bonding between STS and Mg alloys. However, Mg/Al interface has a drawback such as poor bonding strength, which has to be overcome to widen the application field of this material as a structural component. In order to enhance the bonding strength of Mg/Al interface, a great number of post roll-bonding treatments have been tried such as annealing or rolling processes. In this study, a series of secondary rolling process has been performed under various process conditions to evaluate the influence of thermo-mechanical treatment on interface microstructure and mechanical properties of STS-AI-Mg clad sheets.