The evolution of deformation structures of seam weld of stainless steel

V. V. Kibitkin, A. I. Solodushkin, V. S. Pleshanov, S. F. Gnyusov, D. N. Khatkov

Результат исследования: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

The high-cyclic fatigue of welded joints of Fe-17Cr-0.8Ti-0.08C steel was investigated by digital image correlation technique. The lapped images of specimen surface were received with optical microscope (50×) and registered by camera to form a panorama. Four stages of deformation evolution are suggested: strain hardening (I), stable necking (II), unstable necking (III), and fatigue crack (IV). Displacement fields in the neck regions were approximated by linear functions to evaluate the mean deformation rate and displacement variance. The basic types of deformation structures and their evolution in base metal, HAZ and in weld are outlined. It is shown that the seam weld keeps some plasticity under fatigue. It was found that fatigue crack is being formed by plastic flow in base metal zone, and its life time is very short. The evolution of mean deformation and its variance are given.

Язык оригиналаАнглийский
Заголовок главной публикацииProceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019
РедакторыVictor E. Panin, Sergey G. Psakhie, Vasily M. Fomin
ИздательAmerican Institute of Physics Inc.
ISBN (электронная версия)9780735419124
DOI
Статус публикацииОпубликовано - 19 ноя 2019
СобытиеInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 - Tomsk, Российская Федерация
Длительность: 1 окт 20195 окт 2019

Серии публикаций

Имя, фамилияAIP Conference Proceedings
Том2167
ISSN (печатная версия)0094-243X
ISSN (электронная версия)1551-7616

Конференция

КонференцияInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019
СтранаРоссийская Федерация
ГородTomsk
Период1.10.195.10.19

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Цитировать

Kibitkin, V. V., Solodushkin, A. I., Pleshanov, V. S., Gnyusov, S. F., & Khatkov, D. N. (2019). The evolution of deformation structures of seam weld of stainless steel. В V. E. Panin, S. G. Psakhie, & V. M. Fomin (Ред.), Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 [020158] (AIP Conference Proceedings; Том 2167). American Institute of Physics Inc.. https://doi.org/10.1063/1.5132025