Mechanical properties of Al2O3 and Al2O3/Al with Gyroid structure obtained by stereolithographic additive manufacturing and melt infiltration |
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| Affiliation: | 1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China;2. Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China;3. Anhui Key Laboratory of High-Performance Non-ferrous Metal Materials, Anhui Polytechnic University, Wuhu, 241000, China;4. School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan, 430070, China |
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| Abstract: | To obtain both plasticity and toughness of the material at the same time, various manufacturing techniques of ceramic-metal composites and structures have been studied. In this work, a bio-inspired Al2O3 ceramic scaffold with Gyroid structure was designed and prepared by stereolithographic (SL) additive manufacturing, then the Al2O3/Al ceramic-metal hybrid structure was prepared by infiltrating molten Al into the Al2O3 ceramic structure. The performances of the Al2O3 ceramic scaffold and the Al2O3/Al ceramic-metal hybrid structure were compared and analyzed by a quasi-static compression experiment. The quasi-static compressive strength of the pristine Al2O3 scaffold was 14.36 MPa, while that of the Al2O3/Al ceramic-metal hybrid structure was up to 89.06 MPa. Moreover, the plasticity of the Al2O3/Al ceramic-metal hybrid structure was much higher than that of the Al2O3 scaffold. During compression, the Al2O3/Al ceramic-metal hybrid structure had excellent energy absorption, reaching up to 2569.16 KJ/m³, 15 times that of the Al2O3 scaffold. Therefore, this method can obtain materials with excellent ductility and toughness. |
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| Keywords: | Gyroid structure Stereolithographic additive manufacturing Quasi-static compression performance |
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