Phase Transformations in Equiatomic Y–Cu Powder Mixture at Mechanical Milling

• Дата: 2017
• Автори: Dashevskyi, M., Boshko, О., Nakonechna, O., Belyavina, N.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут металофізики ім. Г.В. Курдюмова НАН України 2017
• Назва видання: Металлофизика и новейшие технологии
• Теми: Фазовые превращения
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/125485
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Phase Transformations in Equiatomic Y–Cu Powder Mixture at Mechanical Milling / M. Dashevskyi, О. Boshko, O. Nakonechna, N. Belyavina // Металлофизика и новейшие технологии. — 2017. — Т. 39, № 4. — С. 541-552. — Бібліогр.: 12 назв. — англ.

Mechanical alloying of the elemental powder mixture of copper and yttrium is performed in a high-energy planetary ball mill. The equiatomic YCu compound with full ordered CsCl-type structure is synthesized by use of powder-metallurgy methods for the first time. Phase transformations taking place at Y–Cu mixture milling are studied by x-ray diffraction methods. An expanded description of original software package for the automated DRON apparatus is presented. This software is used for analysis and interpretation of the obtained x-ray diffraction data. This package is intended for solving different tasks, namely: determination of both peak positions and integral intensities of the Bragg reflections by means of full profile analysis; carrying out the qualitative and quantitative phase analyses using PDF (Powder Diffraction File) data for phase identification and the least square method for lattice-constants’ refinement; testing the structure models and refining crystal-structure parameters (including coordinates, atomic position filling, texture, etc.). The effect of oxygen on the phase composition of milling products is analysed.