Еffects of cross rolling and stress relaxation on texture of Zr-2.5%Nb plates

• Дата: 2018
• Автори: Grytsyna, V.M., Malykhin, D.G., Yurkova, T.S., Kovtun, K.V., Chernyayeva, T.P., Kovtun, G.P., Voyevodin, V.N.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2018
• Назва видання: Вопросы атомной науки и техники
• Теми: Физика радиационных повреждений и явлений в твердых телах
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/147703
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Еffects of cross rolling and stress relaxation on texture of Zr-2.5%Nb plates / V.M. Grytsyna, D.G. Malykhin, T.S. Yurkova, K.V. Kovtun, T.P. Chernyayeva, G.P. Kovtun, V.N. Voyevodin // Вопросы атомной науки и техники. — 2018. — № 5. — С. 69-74. — Бібліогр.: 11 назв. — англ.

An effect of cold rolling on texture and the Kearns’ texture parameter (TP) of Zr-2.5%Nb alloy plates, made by straightening the rings of the Ø15.0×1.5 mm tube, has been investigated by the X-ray method of inverse pole figures (IPFs). The rolling was carried out in a direction perpendicular to the direction of longitudinal rolling of the original tube, and did with deformations from 7 to 55% with intervals of ~ 15...40 min between the passages. IPFs and a plot of TP changes with the deformation degrees on the plate’s surfaces are built. Strong oscillations of the graph are noted. By investigation of the samples etched with 30 μm, as well as original samples, selectively processed without delays, it has been established that this is due to the surface stresses relaxation in the intervals between rolling acts. For the continuous rolling process and the conditions of uniformity of the initial texture of the alloy, the graph of TP changes has been determined. The staged nature of the TP dependence on deformation is revealed – existence of an initial stage of almost linear growth and the subsequent stage of insignificant changes.