... S30400 Stainless Steel and U-Bend Specimens Deliquescence and Efflorescence Tests at 45 °C Figure 2 shows the beakers at several RHs where deliquescence was observed. Mixtures of NH₄NO₃ and NaCl, with NO 3 - / Cl - mole ratios of 3.0 and 6.0, deliquesced...

... A limited number of welded U-bend specimens was leftover from a previous work. ⁴ They were prepared from gas tungsten arc welding procedure using Type 308 stainless steel as filler metal. The chemical compositions of the base metal and filler material are shown in Table 1 . The base material...

...The following conclusions and recommendations can be made from this study: U-bend and/or pre-form specimens with LT orientation are useful for evaluating the stress corrosion susceptibility of sensitized 5xxx sheet and thin plate materials that cannot be tested with uniaxial loading in the ST...

... rolled plate Cleaning Procedure Mill finish and pickled Mill finish and pickled Configuration Flat U-bend Weld Welded Welded and non-welded Stress Stress-free Stressed and stress-free Heat Treatment Temperature 550°C and 770°C 427°C and 566°C Testing Phase...

...RESULTS AND DISCUSSION Constant Deformation Tests (U-bend Specimens) The U-bend specimens were exposed to three different multi-ionic electrolyte solutions at the free corrosion potential (E_corr) for up to 5 years. Two of these electrolyte solutions (SCW and SDW) were alkaline of pH...

... deformation (deflection) U-bend specimens in both the non-welded (wrought) and welded conditions. Results show that after more than five years exposure in the vapor and liquid phases of alkaline (pH ~ 10) and acidic (pH ~ 3) multi-ionic environments at 60°C and 90°C, none of the tested alloys suffered...

... research was to evaluate the susceptibility of Alloy 22 to EAC in several environmental conditions with varying solution composition, temperature and electrochemical potential. The susceptibility to EAC was assessed using constant deformation (deflection) U-bend specimens in both the non-welded (wrought...

... applications including process piping systems, heat exchanger equipment, drilling platforms, and desalination systems. Although the N08367 alloy has improved resistance to chloride stress corrosion cracking (CSCC) it is not completely immune to this mode of failure. This investigation exposed U-bend specimens...

... to EAC in a variety of environments that could be related to the permanent emplacement site. These environments are expected to be multi-component in nature. ¹¹ EXPERIMENTAL TECHNIQUE high-level nuclear waste nickel-based alloy N06022 environmentally assisted cracking U-bend slow strain...

...Abstract Erosion-corrosion in a very localized section - 6 in (152 mm) x 3 in (76mm) - of two bottom U-bends of a reformer heater led to leakage and subsequent fire damage. The 6.625 in diameter (168 mm) x 0.321 in (8 mm) wall 1¼< Cr - ½ Mo steel tubes were in service for 25 years. The two...

... operation to recover their heat transfer characteristics. The tube materials alloy G3 and AISI Type 304L stainless steel were tested with Slow Strain Rate Tensile and U-bend specimens in high caustic (45 weight % sodium hydroxide) solutions at approximately 145 °C to determine their potential susceptibility...