...Zehui Liu; Ming Liu; Mengyuan Yang; Lining Xu; Jinxu Li; Lijie Qiao The relationship between the corrosion resistance of cast duplex stainless steel welded joints and inclusions was investigated by metallographic characterization, electrochemical tests, in situ tests, scanning electron microscopy...

...Scott C. Bozeman; Julie D. Tucker; O. Burkan Isgor Additive manufacturing (AM) tools are capable of applying overlay austenitic stainless steel (SS) claddings to carbon steel components. The benefits of this approach over arc welding include a smaller heat-affected zone, residual stress reduction...

...Mainã Portella Garcia; Juliana Sarango de Souza; Carol Glover; Phil Ansell; Geraint Williams; Gerson Luiz Mantovani; Ramachandran Vasant Kumar; Renato Altobelli Antunes Global and local corrosion techniques were used to study the corrosion behavior of weld joints of a high-strength low-alloy steel...

...L.G. Bland; M.A. Melia; J.M. Fitz-Gerald; J.R. Scully Laser surface modification (LSM) was performed on autogenously welded samples to homogenize the weld microstructure and mitigate poor corrosion performance. Characterization of weld zone corrosion behavior and microstructure was performed using...

...Xinxin Zhang; Bing Liu; Xiaorong Zhou; Junjie Wang; Chen Luo; Zhihua Sun; Zhihui Tang; Feng Lu In the present study, the microstructure and corrosion behavior of friction stir welded (FSW) 2A97-T3 Al-Cu-Li alloy are investigated. It is found that the welding process promotes the formation of high...

...A. Ravi Shankar; S. Niyanth; M. Vasudevan; U. Kamachi Mudali AISI Type 304L (UNS S30403) austenitic stainless steels are widely used in spent nuclear fuel reprocessing plants, and welding is an indispensable tool used for joining these materials. In the present study, manual gas tungsten arc-welded...

... rate (SSR) and fatigue precracked compact tension (CT) tests to characterize the effect of metallurgical and environmental variables on SCC. Metallurgical factors, including steel grade within a range of pipeline grades, welds, and heat-affected zone, do not appear to have a significant effect...

...P.K. Giridharan; N. Murugan Pulsed gas tungsten arc welding (pulsed GTAW) process was used for the autogenous welding of austenitic stainless steel (Type 304L [UNS S30403]) sheets of 3 mm thickness. In the pulse GTAW process, welding current is pulsed between the high peak current and the low...

...D.M. García-García; J. García-Antón; A. Igual-Muñoz; E. Blasco-Tamarit The objective of this work was to study the effect of dynamic flow conditions (mechanical effect) on the cyclic potentiodynamic and potentiodynamic curves of EN 1.4462, its filler metal (EN 1.4462F), and the welded metal (EN...

...Y.H. Kim; G.S. Frankel; J.C. Lippold The effects of alloying elements on the corrosion properties of Ni-Cu alloy were investigated to optimize the composition of a Cr-free consumable for the welding of stainless steels. Cyclic polarization experiments were performed in 0.1 M sodium chloride (NaCl...

..., the introduction of the welding process will significantly degrade SCC resistance in the steels containing a bainitic ferrite structure. This degradation effect is caused mainly by the decomposition of the bainitic ferrite structure into a separate microstructural entity. On the other hand, an increase...

..., Nevada, was assessed in chloride-containing solutions at temperatures ranging from 60°C to 95°C. The results of tests covering a range of metallurgical conditions, including as-welded, welded plus solution-annealed, and thermally aged materials, were compared with those for the as-received mill-annealed...

...Y.H. Kim; G.S. Frankel; J.C. Lippold; G. Guaytima During fusion welding of stainless steels and other high-Cr alloys, evaporation and oxidation of Cr from the molten weld pool result in the generation of carcinogenic hexavalent chromium (Cr[VI]) in the welding fume. Stringent new exposure limits...

...A. Igual Muñoz; J. García Antón; J.L. Guiñón; V. Pérez Herranz The corrosion behavior of three stainless steels UNS 14311, UNS 14429 (austenitic stainless steels [SS]), UNS 14462 (duplex SS) and their corresponding filler metals (alloys in form of wire) for welding was studied in a commercial...

...), nonetheless, still is marginally acceptable in cases where a 0.25-in. (6.3-mm) corrosion allowance has been provided because it affords a 13-year life for the hydraulic end cone section. Weld heat-affected zones corroded by an average of ~ 30% faster in 42°F (5.6°C) acid, 50% in 52°F (11.1°C) acid, and 35...

...M.S. Cayard; R.D. Kane The serviceability of welded steel equipment in wet hydrogen sulfide (H₂S) service was studied. Large-scale exposure tests were conducted using a steel pressure vessel containing various welded test plates. Effects of variables including steel base plate...

... potentiokinetic reactivation [EPR] and double-loop EPR), as well as transmission electron microscopy. The weld heat-affected zone (HAZ) showed a sensitized zone between two and five mm from the fusion line in which grain boundary carbides formed almost a continuous chain, and Cr-depletion was evident. May...

...H. Menendez; T.M. Devine The relative sensitization susceptibilities of autogenous type 308 (UNS ⁽¹⁾ S30800) stainless steel (SS) tungsten inert gas (TIG) welds were investigated by isothermally heat treating welds for various lengths of time at 550 and 600°C and testing...

...S. Turner; F.P.A. Robinson AISI ⁽¹⁾ type 304L (UNS ⁽²⁾ 30403) and 316L (UNS 31603) stainless steels were heat treated under controlled conditions to produce surface oxides similar to those formed during welding. The oxides were surface-analyzed by Auger electron spectroscopy...