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Mechanical properties of Al2O3/Ni laminated composites
Affiliation:1. State Key Lab of MMCs, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, PR China;2. No. 52 Institute of China Ordnance Industries Group, 4 Hudemulin Road, Baotou 014034, Inner Mongolia, PR China;1. Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, 3-11 Wenhua Road, Shenyang 110819, PR China;2. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, PR China;1. School of Defense Science, Chung Cheng Institute of Technology, National Defense University, No.75, Shiyuan Rd., Daxi Dist., Taoyuan City 33551, Taiwan;2. Dept. of Power Vehicle and Systems Engineering, Chung Cheng Institute of Technology, National Defense University, No.75, Shiyuan Rd., Daxi Dist., Taoyuan City 33551, Taiwan
Abstract:Al2O3/Ni laminated composites were prepared by aqueous tape casting and hot pressing with intent to study mechanical properties including the fracture strength and toughness. The residual stress was evaluated and proved. The relations of mechanical properties with the thermal residual stress, the ductility of metal layers and the layer thickness ratio were studied, respectively. It was found that the toughness and work of fracture of Al2O3/Ni laminar reached to 12.56 MPa m1/2 and 12 450 J m? 2, which are 3.6 and 478.8 times that of pure Al2O3.
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