Experiment & Research on Additive Manufacturing of Aluminium Alloy Cylinder Head
Author of the article:YUE Chang;WANG Xinjie
Author's Workplace：City College of Zhejiang University, Hangzhou 310015,China
Key Words：aluminium alloy cylinder head additive manufacturing heat treatment mechanical properties
Abstract：
The AlSi10Mg aluminium alloy engine cylinder head was prepared by selective laser sintering additive manufacturing process. The variation data of hardness, tensile strength and elongation after fracture of cylinder head and tensile bar before and after T6 heat treatment were compared and tested. The particle size distribution characteristics and particle shape characterization of AlSi10Mg powder were detected and analyzed by laser particle size analyzer.Microstructure characteristics, eutectic silicon grain size and solid solution grain size of cylinder head were studied by means of metallographic microscope and SEM. The corresponding relationship between the microstructure and mechanical properties was discussed. The results show that the hardness, tensile strength and elongation of AlSi10Mg additive products before and after heat treatment are 126 HBW, 445 MPa, 6.5% and 85.8 HBW, 335 MPa, 11%, respectively.
