Тип публикации: статья из журнала
Год издания: 2024
Идентификатор DOI: 10.17580/cisisr.2024.01.11
Ключевые слова: short-term creep, viscous deformation, incrementally increasing load, creep at constant effective stress, Viscoplastic deformation
Аннотация: Mechanical processing of Chromium-nickel steel machining (cutting, pressure treatment) is impossible without taking into account their short-term creep and ductility properties. The purpose of this work is to study the formation and deformation development under short-term creep and constant effective stresses. The results of experПоказать полностьюimental tests of chromium-nickel steel 12Kh18N10Т for short-term creep at room temperature are presented. A distinctive feature of the tests is the short-term creep in a wide range of stresses study: from the initial creep limit to the material destruction. The experiments were carried out under conditions of a stepwise increasing load (liquid pressure in a closed pipe) at a constant intensity of true stresses at each stage. It is shown that the conditions for changing the load, which ensure the constancy of the stress intensity, are violated at a sufficiently high voltage. Methods for separating the deformation into a plastic component and a component from short-term creep are proposed, which can be used both under conditions of stepped loading and under continuous loading. Examples of the occurrence and deformation development during short-term creep under conditions of decreasing stress are given.
Журнал: CIS Iron and Steel Review
Выпуск журнала: Т. 27
Номера страниц: 71-77
ISSN журнала: 20720815
Место издания: Moscow
Издатель: Магнитогорский государственный технический университет им. Г.И. Носова, "Ore and Metals" Publishing House