전기전도도를 이용한 Al-Si-Cu-Mg 합금 품의 기계적 압축 특성 평가

Evaluation of Mechanical Compressive Properties of Al-Si-Cu-Mg Alloy Foams Using Electrical Conductivity

Electrical conductivity of Al-Si-Cu-Mg alloy foams of various density produced in powder metallurgical method has been measured using two probe electrical conductivity measurement method. Compressive mechanical properties such as elastic modulus and plastic plateau stress of foams were evaluated from electrical conductivity using power law relation and scaling laws of foam properties. Uni-axial compression test was also performed. Experimentally measured elastic modulus and plastic plateau stress were compared with the values evaluated from electrical conductivity. The computed values were in good agreement with the experimental result.