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Effect of Interfacial Reaction Layer on Mechanical Properties of 3-plyMg/Al/STS Clad-metal

Mg/Al/STS 3층 클래드재의 기계적 특성에 미치는 계면반응층의 영향

  • Kim, In-Kyu (Department of Advanced Materials Engineering, Chungnam National University) ;
  • Song, Jun-Young (Department of Advanced Materials Engineering, Chungnam National University) ;
  • Lee, Young Sun (Materials Deformation Group, Korea Institute of Materials Science) ;
  • Hong, Sun Ig (Department of Advanced Materials Engineering, Chungnam National University)
  • 김인규 (충남대학교 나노소재공학과) ;
  • 송준영 (충남대학교 나노소재공학과) ;
  • 이영선 (재료연구소 변형제어그룹) ;
  • 홍순익 (충남대학교 나노소재공학과)
  • Received : 2011.04.08
  • Published : 2011.08.25

Abstract

3-ply Mg/Al/STS clad-metal was fabricated by the roll bonding process. An interfacial reaction layer was formed at the Mg/Al interface at and above $300^{\circ}C$ whereas no interfacial reaction layer was observed up to $400^{\circ}C$. The effect of the interfacial reaction layer on the mechanical and fracture properties in clad metals after heat treatments were investigated The chemical compositions were analyzed at the Mg/Al interface by an Energy dispersive X-ray analysis (EDX). A tension test was performed to examine the interfacial cracking properties. The Mg layer fractured first, causing a sudden drop of the stress and Al/STS layer continued to deform until the final fracture. Periodic cracks and crack propagation was observed at the reaction layer between Mg and Al.

Keywords

Acknowledgement

Supported by : 지식경제부

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