Full
JIN Miao (1968-), male, Ph.D., Professor. E-mail: jmiao@ysu.edu.cn
Outline
The sintered Al2O3 blocks with some properties similar to Al2O3 inclusions in ingot were investigated, and the fracture behavior of Al2O3 during deformation was analyzed by high-temperature compression experiments in a special hot compression device. Based on the analysis of fracture characteristics of crushed samples, a prediction model of high-temperature crushing strength of Al2O3 was proposed based on the hyperbolic sinusoidal Arrhenius equation, the region map of crushing mode of Al2O3 characterized by Z parameter was constructed, and the crushing mechanism of Al2O3 at different deformation parameters was revealed. The results show that the hot compression process of Al2O3 has a typical brittle fracture, i.e., its crushing strength is positively correlated to the strain rate and it is negatively correlated to the deformation temperature, and it is more sensitive to the deformation temperature. The crushing mode of Al2O3 inclusions gradually changes from transgranular fracture to intergranular fracture when the Z parameter decreases.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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