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Outline
Because of the high strength and temperature sensitivity of the metal glass, its lower limit is higher and upper limit is lower than that of crystal metal when bulk metal glass was prepared by amorphous foils explosive welding. In this paper, the surface of foils was coated by copper to decrease surface hardness. Results showed that this method can reduce the lower limit, concentrate the energy of plastic collision mainly on coating layer and remarkably minimize foils heat effect zone. Besides, during the experiment designing, ideas of damage mechanics were used to set defects to accelerate the attenuation of tensile waves, so the tensile strength at welding interfaces can be reduced, in combination with the model of thermo-softening at welding interfaces. The upper limit was obviously increased. Both of upper limit and lower limit were improved, and the welding window was effectively expended, so the purpose of preparing bulk metal glass by explosive welding amorphous foils would be easier to implement.
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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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