Effect of alloying and quenching practice on the damping capacity of alloy Br.a10
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Damping capacity increases with a decrease in martensite transformation hysteresis due to a reduction in the number of twins in the martensite needles.
Changing the quenching temperature does not significantly affect the position of the critical points of the martensite transformation, the morphology of the martensite, or the damping capacity of theβ-alloys.
The amount of martensite transformation hysteresis and the vibration decrement are determined by the degree of alloying of the alloy and the nature of the alloying elements. The highest damping capacity is attained in alloys alloyed with zinc, the structure of which is characterized by coarse acicular martensite grains with an optimum number of twins.
In conclusion, we should note that, of the alloys investigated, the alloys of the copper-aluminum-zinc system have the best combination of damping, strength, and ductility properties.
KeywordsZinc Martensite Ductility Optimum Number Martensite Transformation
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