Kam legirlangan poʻlat qotishmalari tarkibidagi Metall boʻlmagan qoʻshimchalarning tahlili
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Kam legirlangan po‘lat, metall bo‘lmagan qo‘shimchalar, metallografiya, mikrorentgen-spektral tahlil, kalsiy alyuminatlar, magniyli shpinel, oksid-sulfid fazalar, oksidsizlantirish, morfologiya, fazaviy tarkibAbstrak
АNNOTАTSIYА
Ushbu maqolada kam legirlangan po‘lat qotishmalari tarkibidagi metall bo‘lmagan qo‘shimchalarning morfologik, kimyoviy va fazaviy tarkibi tadqiq etilgan. Tadqiqotda an’anaviy va taklif etilgan texnologiyalar asosida olingan po‘lat namunalarining qiyosiy tahlili amalga oshirilgan. Metall bo‘lmagan qo‘shimchalarning miqdori, o‘lchami, shakli va morfologik xususiyatlari metallografik usul yordamida baholangan, ularning elementar tarkibi esa mikrorentgen-spektral tahlil asosida aniqlangan. Tadqiqot natijalariga ko‘ra, po‘lat tarkibidagi qo‘shimchalar asosan Ca–Al–Mg–O–S tizimiga mansub murakkab oksid-sulfid fazalardan tashkil topishi aniqlandi. Qo‘shimchalarning asosiy qismini kalsiy alyuminatlari tashkil etib, ularda MgO·Al₂O₃ tipidagi magniyli shpinel, CaS va MnS kabi fazalar ham mavjudligi qayd etildi. Qo‘shimchalarning morfologiyasi va fazaviy tarkibi o‘rtasidagi bog‘liqlik aniqlanib, ularning issiq deformatsiyalanish jarayonidagi xatti-harakatiga ta’siri baholandi. Olingan natijalar asosida metall bo‘lmagan qo‘shimchalarning fazaviy tarkibini boshqarish uchun 3CaO·Al₂O₃ tipidagi kalsiy alyuminatlarini shakllantirishga yo‘naltirilgan texnologik yondashuv taklif etildi.
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