Specific Features of the Fine Structure and Local Stress State of 13Kh11N2V2MF Steel under Cyclic Loading.

By the method of transmission electron microscopy (TEM), we study the changes in the fine structure of 13Kh11N2V2MF steel, the character of distribution of dislocations and local internal stresses formed under deformation influence in the course of low-cycle fatigue tests. It is established that, in the intact metal, the submicrostructure does not have visible stress concentrators and sharp gradients of the dislocation density. Under the deformation influence, a gradient dislocation structure is formed in the fracture zone. Moreover, we observe the appearance of local internal stresses that are much higher in martensite and near grain boundaries than in ferrite and in the grain bodies. [ABSTRACT FROM AUTHOR]

Copyright of Materials Science is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)