The evolution of the welded joints structure at low cycle fatigue

被引：0

作者：

Poyarkova, Ekaterina ^{[1
]}

Kuzeev, Iskander ^{[2
]}

机构：

[1] Orenburg State Univ, Orenburg, Russia

[2] Ufa State Petr Technol Univ, Ufa, Russia

来源：

INTERNATIONAL CONFERENCE ON MODERN TRENDS IN MANUFACTURING TECHNOLOGIES AND EQUIPMENT (ICMTMTE 2017) | 2017年 / 129卷

关键词：

D O I：

10.1051/matecconf/201712902045

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of cyclic damage on the structure evolution and the change in the micro stresses of the crystal cell in characteristic zones of dissimilar welded joints of steels strength classes X60 and X70 is estimated. It is shown, that with increase in the number of loading cycles in less strong metal of the welded joint, relaxation of internal stresses, realized by splitting individual ambits of ferrite grain or by the initiation of micro cracks, is observed. The results of fractographic analysis of a less reliable weld zone at different levels of samples fractures of accumulated damage are presented.

引用

页数：5