Refine your search�ソスF     
Report No.
 - 

Effect of welding conditions on residual stress and SCC behavior at butt-welding joints of recirculation pipes

Katsuyama, Jinya  ; Tobita, Toru; Ito, Hiroto; Onizawa, Kunio 

Stress corrosion cracking (SCC) in recirculation pipes has been observed near butt-welding joints due to high tensile residual stress by welding. In present work, scatters of welding conditions such as heat input and welding speed were measured experimentally by producing a series of butt-welding pipe specimens. Distribution and its scattering of residual stress were also measured by non-destructive and destructive methods. The effects of welding conditions on residual stress have been evaluated by parametric FEM analyses considering the variation of some parameters based on the welding experiments. The effects of welding conditions on crack growth behavior have been also evaluated by SCC growth simulations using calculated residual stress distributions and a procedure in the fitness-for-service code. Welding conditions such as heat input and welding speed have a strong influence on crack growth rate since residual stress is also affected by scatter of these welding conditions.

Accesses

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.