Deformation behavior, evolution of strain states and textures during roll cladding of five ply composite sheets

5겹 복합판재 시료의 압연시 각 판재 층의 변형상태 및 집합조직의 형성

  • 김종국 (한국국방연구원 무기체계연구센터) ;
  • 허무영 (고려대학교 재료공학부)
  • Published : 2006.05.11

Abstract

Two clad composites of five ply sheets comprising STS430/AA3003/AA3003/AA3003/STS430 and STS430/AA3003/STS430/AA3003/STS430 were produced by roll cladding at $350^{\circ}C$. In order to clarify the deformation behavior and strain states in the composites during roll cladding, the variation of individual sheet thickness and the evolution of through thickness textures and microstructures of the composites were investigated. The thickness reduction of each sheet depended on the location of the sheet and on the strength of each sheet in the composites. In order to elucidate the evolution of textures and microstructures in AA3003 sheets, the strain states in AA3003 sheets during roll cladding were calculated by FEM. The formation of shear textures and fine grains in AA3003 sheet was discussed in terms of the strain states in each sheet layer. Finally, the strain states extracted from the FEM were verified by texture simulations

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