Effect of interlayer macrostress on hydride orientation in shell tubes from Zr-based alloys

17th International Conference on Textures of Materials

材料科学;物理学

Isaenkova, M.^1 ; Perlovich, Yu.^1 ; Krymskaya, O.^1 ; Medvedev, P.^1

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia^1

关键词: Crystallographic textures;    In-shell;    Inhomogeneities;    Macrostresses;    Texture analysis;    Transverse section;    Tube walls;    Zr-based alloy;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/82/1/012106/pdf
DOI  :  10.1088/1757-899X/82/1/012106

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Methods of texture analysis allowed to show that inhomogeneity of the crystallographic texture in shell tube wall is responsible for rise of tangential macrostress in the tube. This inhomogeneity predetermines a difference of thermal expansion between outside and inside layers of tube at its exploitation temperature. The indicator of such stress is formation of radially-oriented hydrides in the transverse section of tube, subjected to treatment in autoclave.