Study on Mechanical Properties of Tensile Specimens of Aluminum Alloy with EPS Pattern
Author of the article:WANG Xinjie
Author's Workplace：Key Laboratory for Hangzhou Advanced Design&Manufacturing Technology,Zhejiang University City College,Hangzhou 310015,China
Key Words：EPS pattern aluminium alloy mechanical properties micro-strain space sequence curve
Abstract：
ZL101 A tensile specimen was prepared by means of EPS model and EPS model of hollow straight runner.The mechanical properties,empty overture,microstrain nephogram,fracture morphology and energy spectrum of the samples were tested,and their correlation was analyzed and discussed.The results show that average hardness of radial surface layer within 5 mm is 62.63 HV50,tensile strength is 121.0 MPa,elastic modulus is 38325.0 MPa,Poisson’s ratio is 0.41,elongation after fracture is 1.93%.The fracture is characterized by small brittle fracture gap and plastic dimpling fracture.The brittle fracture zone is poor in Al and Si,rich in C,O and N,and the contents of A1 and Si in the ductile fracture zone are close to those of ZL101 A alloy.
