INVESTIGATION OF THE EFFECT OF SPECIAL THERMOCYCLIC TREATMENT ON THE DEFECTIVENESS OF THE CRYSTAL STRUCTURE OF TOOL STEELS AND THEIR MECHANICAL PROPERTIES
A MukhamedovTashkent State Technical University, Tashkent, UzbekistanShukurov ShTashkent State Technical University, Tashkent, UzbekistanS DyachenkoO GuryevaS ZemlyakovA GurevAlon MishraJoydeep MaityV FedyukinF NorkhudjaevO KhudayberdiyevD ErgashevS DjalolovaF NorkudjayevA TeshaboeyevJ UsmonovS ParmonovA AlikulovKhKh AbdurakhmonovT TursunovD BerdiyevA YusupovUmarovaTilavov YunusSuvonovichK KarimovA AkhmedovB KushimovB YuldoshevM UmidjonA JeltukhinY MeliboyevB AzamatF NorkhudjayevM TukhtashevaB BektemirovShM GopirovZ AlimbabaevaKarimov Kamolkhon; Turahodjaev NodirbekAkhmedov AzamatChorshanbiev ShukhratTashbulatov SherzodSh KarimovSh MamirovI KhabibullayevaN Khusanov
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This study has shown that to obtain a high level of final properties of tool steel, the most optimal is to obtain a substructure with a high level of defectiveness of the crystal structure of steel. It was found that the use of thermal cycling treatment contributes to an increase in the level of defectiveness of the crystal structure. It was also found that the use of aqueous solutions of polymers as a quenching medium makes it possible to obtain a cooling rate less than in oil quenching, which helps to reduce the level of quenching stresses.
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