Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 10, Part 5American Society of Mechanical Engineers, 1991 - Arctic regions |
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Page 68
... Hardness , Hv / 10kg ! 280 Outside 260 Mid . - thick . 240 220 Distance from weld center , mm Fig.12 Macrostructure and hardness distribution of seam welded joint ( 16.9wt ) Fig . 13 - a shows macrostructure and hardness distribution of ...
... Hardness , Hv / 10kg ! 280 Outside 260 Mid . - thick . 240 220 Distance from weld center , mm Fig.12 Macrostructure and hardness distribution of seam welded joint ( 16.9wt ) Fig . 13 - a shows macrostructure and hardness distribution of ...
Page 86
... hardness has increased in severity from the standpoint of better field weldability and SSCC resistance . REDUCTION IN HAZ HARDNESS OF UOE PIPE BASE MATERIAL Although decreasing the carbon content and carbon equivalent is effective in ...
... hardness has increased in severity from the standpoint of better field weldability and SSCC resistance . REDUCTION IN HAZ HARDNESS OF UOE PIPE BASE MATERIAL Although decreasing the carbon content and carbon equivalent is effective in ...
Page 87
... hardness test . The hardness generally increases in the root pass HAZ subjected to low heat input welding and in the capped pass HAZ free from the tempering effect of subse- quent passes . In order to simulate the T - cross portion , a ...
... hardness test . The hardness generally increases in the root pass HAZ subjected to low heat input welding and in the capped pass HAZ free from the tempering effect of subse- quent passes . In order to simulate the T - cross portion , a ...
Contents
Propagation and Diffraction of Cnoidal Waves | 9 |
Dynamic Stresses and Motions of Offshore Pipelines During Laying | 17 |
TimeDevelopment of Scour Induced Free Spans of Pipelines | 25 |
Copyright | |
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applied axial base metal brazing cables calculated carbon equivalent chemical composition cnoidal waves coating cooling crack CTOD curve cycle defects developed dew point temperature diameter dynamic tension force effect electrode equation field Figure fitness-for-purpose flaws flow foam forge welding fracture fracture mechanics free span frequency friction welding gas pipeline GMAW Gr.B HAZ hardness heat input hydrocarbon dew point induction heating inner pipe installation insulation internal J-Lay length line pipe linepipe load material maximum measured mechanical properties method microstructure nonlinear offshore pipelines operation ovalization parameters pipe material pipe wall pipeline plate pressure problem procedure propagation PUFI PWHT ratio reeling S-N curves seam weld simulation Specimen steel stress surface T-cross portion tensile strength thermal thermal insulation toughness tube UOE pipe velocity wall thickness water depth water dew point weld metal X80 grade yield strength