Influence of temperature and exploitation period on fatigue crack growth parameters in different regions of welded joints

Frattura ed Integrità Strutturale

Aleksandar Sedmak¹  Nemanja Vasic²  Bogdan Cirkovic²  Ivica Camagic²  Zijah Burzic³  Aleksandar Radovic⁴ 

[1] Faculty of Mechanical Engineering,Serbia;Faculty of Technical Sciences,Serbia;Military Technical Institute,Serbia;Technical School Mihailo Petrovic Alas,Serbia;

关键词: Welded joint;    Crack;    Yield stress;    Tensile strength;    Permanent dynamic strength;   

DOI  :  10.3221/IGF-ESIS.36.01

来源: DOAJ

【 摘 要 】

The influence of exploitation period and temperature on the fatigue crack growth parameters indifferent regions of a welded joint is analysed for new and exploited low-alloyed Cr-Mo steel A-387 Gr. B. The parent metal is a part of a reactor mantle which was exploited for over 40 years, and recently replaced with new material. Fatigue crack growth parameters, threshold value Kth, coefficient C and exponent m, have been determined, both at room and exploitation temperature. Based on testing results, fatigue crack growth resistance in different regions of welded joint is analysed in order to justify the selected welding procedure specification.

【 授权许可】

Unknown