...ABSTRACT During fabrication of piping systems discoloration (heat tint) in access of that accepted by welding standards such as Norsok M-601 is sometimes experienced.¹ This is normally a result of insufficient purging gas. The effect on mechanical properties and corrosion resistance...

... properties of DSS during fabrication, which is assessed through standard tests such as ASTM ⁽¹⁾ A - 923 Method C during welding procedure qualification. As a matter of fact, welding affects the original base metal ferrite-to-austenite balanced ratio and therefore the corrosion performance...

... samples with the size of approximately 20 mm x 20 mm were prepared from either 22% Cr duplex stainless steel base metal or weld metal pieces as shown in Figure 1 . The description of each sample and the typical microstructure of the surface subject to measurement of the samples are shown in Figure 2...

...Abstract To obtain heat affected zone (HAZ) hardness levels below maximums specified in the current (2015) edition of NACE ⁽¹⁾ MR0175/ISO ⁽²⁾ 15156-3 for sour service use, welded super martensitic stainless steels (SMSS) need post weld heat treatment (PWHT). PWHT is mainly...

...EDS Analysis One of the weld cross sections from Plate 1 was examined in-situ using a scanning electron microscope (SEM) equipped with energy dispersive X-ray spectroscopy (EDS) to determine the elemental composition of the weld and plate material. The weld was observed to have...

...Ni-Cr-Mo alloy Uns N06058 2.4700 matching filler metal corrosion resistance mechanical properties welding explosion cladding ISO corrosion diagram sulfuric acid hydrochloric acid mixture acid Abstract The high performance alloy UNS N06058 contains about 21 wt.-% chromium and at least...

...Abstract The crack growth responses of as-received and as-welded Alloy 600/182 and Alloy 690/152 welds to constant loading were measured by a direct current potential drop method using compact tension specimens in primary water at 325 °C simulating the normal operating conditions of a nuclear...

...Duplex 2205 Stainless Steel Welding Ferrite Fraction Sulfide Stress Cracking (SSC) Electron Backscattered Diffraction (EBSD) INTRODUCTION Duplex stainless steels are used in refinery and petrochemical plants due to the combination of strength and resistance to corrosion. However, the tailored...

... H₂S service (“sour service”) remains limited due to their weldability considered as challenging. This paper aims at introducing newly developed material ASME SA-533 type E class 2, and provides results obtained in base metal and welded joints, especially with respect to NACE standard MR0175 / ISO...

...Abstract Apart from the well-tried cellulosic electrodes, in the range from E6010-E9010, there are also low hydrogen grades of weld consumables, which are used in vertical downhill position - commonly called as BVD (Basic Vertical Down) electrodes. In addition, the seamless flux cored wires...

...Abstract The paper considers best practice to realise the optimum combination of strength, toughness, corrosion resistance and radiographic integrity in UNS S32760 pipe girth welds made using the GTAW process. Aspects of fit up, tacking, root gap are considered. The effect of weld heat input...

...The typical weld metal of austenitic stainless steels contains two phases (i.e. austenite + ferrite). It is believed that the corrosion problems commonly associated with welding of austenitic stainless steels are related to the chemical segregation. It has been reported that the solidified fusion...

...” (i.e. the causes of a stop of production). What presented for welding data is readily applicable to data from Non-Destructive Testing data, as the same criteria and similar elaboration have been applied. They are ready and available for integration. Field Joint Coating data deserve a discussion apart...

...Absrract This paper provides a real case study in regard to controlling the welding repair rate and NDT backlog in a company mega-project assigned to a new contractor. This case study shows the improvements in both KPIs, through the utilization of various quality and improvement tools...

...The SSRT test results of N07022 all-weld-metal samples are shown in Table 4 . The average ratios of time to failure, % elongation, and % RA in the environmental test condition to the inert test condition were in the range of 0.93 to 1.02, which are considered high ratios for the severe test...

.... The Charpy V-notch impact energy and the elongation in a tensile test at 600°C are still above the lower limits after aging solution annealed samples for 3000 h at 600°C. Welding procedure test according to DIN EN ISO 15614-1 was successfully done on 16 mm plate with a matching filler metal. Alloy 699 XA has...

... environments. The current study evaluates the effect of welding and the presence of a crevice on five alloys. The alloys include a common austenitic alloy, UNS S31603; two superaustenitic alloys, N08367 and N08031; and two Ni-Cr-Mo alloys, N10276 and N06059. These comparisons are essential for proper material...

... of measurement location, i.e. the way of choosing HAZ from the weld was investigated from 3 different sets of 10 fields, named Case 1, Case 2 and Case 3 as shown in Figure 4 . Measurements were conducted by using grid size of 100. Case 1: 10 measurements are taken on the fusion line. Case 2: locations...

...Abstract PWSCC testing of Alloy 182 and 152 welds was conducted using 1/2 compact tension (CT) specimens at 325 ℃ in simulated primary water environments of a PWR, and a surface oxidation test using plate specimens was conducted in the same autoclave for 3600 hours. The average measured crack...

...The aim of this paper is to understand the effects of material thickness, weld heat input, and restraint condition during welding fabrication on ferrite content and hardness in thick wall (25 mm or above) 22% Cr duplex stainless steel welds. EXPERIMENTAL PROCEDURE Materials Solution annealed...