Abstract
We have studied the influence of high-energy treatments on changes in the morphology, structure, phase composition, and (as a consequence) hardness of BrA 10 (DIN CuAl10Fe3Mn2) bronze powder particles. It has been shown for the first time that, independent of energy delivery rate during mechanical treatment of the powder, after the delivery of a given amount of energy the particles are similar in size, phase composition, and internal structure. Mechanical milling of the material leads to changes in particle shape, cleaning and activation of the particle surface, changes in the internal structure of the particles, and an increase in their hardness from 248 to 322 HV0.025. Unlike mechanical milling, heat treatment of the material leads to stress relieve, accompanied by a decrease in its hardness from 248 to 104 HV0.025.
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