Deformation and Residual Stress Measurement of Alumina Ceramics after Dynamic Impacts
Alumina ceramics sintered at 1350°C ~ 1550 °C with various mechanical properties were tested using a minitype compressed air gun with mini WC material bullets impacting at a fixed bullet speed of 100 m/s. The resistance behaviour and deformation were recorded by visual examination. Cr3+ fluorescence...
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| Veröffentlicht in: | Materials science forum 2019-01, Vol.944, p.565-570 |
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| creator | Gao, Yuan Fei Zhao, Meng Yu Si, Zhao Xia Yang, Li Xue |
| description | Alumina ceramics sintered at 1350°C ~ 1550 °C with various mechanical properties were tested using a minitype compressed air gun with mini WC material bullets impacting at a fixed bullet speed of 100 m/s. The resistance behaviour and deformation were recorded by visual examination. Cr3+ fluorescence was used to measure the induced residual stress and plastic deformation. The results show that the alumina with finest grains size and highest hardness is more effective in the bulletproof, the alumina sintered at 1450 °C experienced both the greatest extents of compressive residual stress (3.25 GPa) and plasticity (24 cm-1 shift). |
| doi_str_mv | 10.4028/www.scientific.net/MSF.944.565 |
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| subjects | Aluminum oxide Ceramics Compressed air Compressive properties Deformation resistance Fluorescence Mechanical properties Plastic deformation Projectiles Residual stress Sintering Stress measurement |
| title | Deformation and Residual Stress Measurement of Alumina Ceramics after Dynamic Impacts |
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