(Харківський національний автомобільно-дорожній університет, 2023) Aiupov, O.; Nosko, O.; Aiupova, T.; Kupchinska, A.
The peculiarities of AK18 alloy (B-Sn) structure formation, mechanical properties, friction and
wear parameters formation depending on the regimes of physical and chemical melt processing and thermocycling
in the solid state have been established. Observed structural changes (the -Si and eutectics ratio,
the primary and eutectic -Si crystals shape and size, eutectics differentiation increasing, the pseudoprimary
aluminum solid solution (-A1) dendrites appearance provide an improvement in the complex of
mechanical properties and a reduction in wear friction parameters. The obtained experimental data allow
to recommend a complex treatment "hydrogen treatment for 40 min + thermal cycling in the solid state at
475-485°C for 5 cycles" to improve the complex of mechanical properties and reduce the wear friction parameters.
