Abstract
This work was aimed at gaining insight into structure phenomena in model nickel alloys and finding relations between their structure and mechanical properties. Quantitative stereological analysis was used to determine the structure parameters. The structure processes were described, based on kinetic dependences of the parameters. The control mechanisms of particle coarsening were described for the individual model alloys. The well-known correlations between the free interparticle spacing of the hardening particles and the precipitation hardening were used. Four theoretical models were tested and a good agreement between the calculated and observed hardening values was obtained. The two theoretical approaches to the kinetics of the structure phenomena are applicable in technical practice when predicting material properties during long-term operation of the facility.

Key words
kinetics of particle coarsening, mean interparticle spacing, mean particle diameter, nickel alloy, precipitation hardening, quantitative steoreology analysis, secondary phases

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