| Autor: |
Osipovich, K. S., Kalashnikov, K. N., Chumaevskii, A. V., Vorontsov, A. V. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2899 Issue 1, p1-4, 4p |
| Abstrakt: |
In the current work, samples of functionally graded materials based on steel and copper were obtained by wire-feed electron beam addition technique. The samples presented were characterized by a sharp and a smooth interface. To form the sharp interface, it was necessary to change the wire-feed from AISI 321 to C11000 immediately after finishing the N layer pass. Structure formation occurred through convective mixing and primary crystallization. Thus the formation of mechanical mixture on both sides of the sharp interface of functionally gradient material is observed. The width of the sharp interface does not exceed 100 µm. In order to form a smooth interface in the structure between the parts, it was necessary to gradually increase the feeding speed of the copper wire to the molten pool and decrease the feeding speed of the steel wire until it stopped completely. Structure formation in the material occurs through recrystallization and the formation of diffusion volumes, which leads to the presence of solid-phase diffusion. The width of the smooth interface between the components is from 6 mm, and this value can be increased by varying the wire feed rate ratios. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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