| Autor: |
Maksymova, S. V., Kovalchuk, P. V., Voronov, V. V., Datsiuk, I. I. |
| Předmět: |
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| Zdroj: |
Paton Welding Journal; Aug2023, Issue 8, p36-43, 8p |
| Abstrakt: |
The results of complex studies on brazing filler metals of Cu-Mn-Co-Fe system alloyed with iron in the range of 1-5 wt.% are presented. The melting point was determined through calculation, and it was shown that increasing the concentration of iron from 1 to 5 wt.% leads to a slight (from 912 °C to 923 °C) increase in the solidus temperature and a significant increase in the liquidus temperature (from 931 °C to 1027 °C). At the same time, the melting temperature range expands to 104 °C. The results of experimental studies on spreading of brazing filler metals over Kovar and corrosion-resistant steel have established that an increase in the iron concentration from 1 to 5 % contributes not only to an increase in the liquidus temperature, but also to an increase in the spreading area, which is due to the melting temperature of a copper-based solid solution. Local X-ray microanalysis established a discrete distribution of constituent elements and showed that the brazing filler metal contains two solid solutions after spreading: copper-based and manganese-based. The research results on overlap brazed joints of Kovar - corrosion-resistant steel have demonstrated that addition of iron to Cu-Mn-Co-Fe alloy leads to an increase in microhardness and shear strength. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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