Fig. 6.28 Gas tungsten arc welding. Courtesy of Lynn Welding More

Fig. 9.9 Setup for inert gas shielding for gas-tungsten arc welding of titanium alloys outside a welding chamber. Gas shielding is from the torch and through ports in hold-down bars, backing bars, and from trailing and backup shields. More

Fig. 6.27 Examples of components produced by gas tungsten arc welding (GTAW). (a) Thin walled aluminum. (b) Titanium components. Courtesy of Lynn Welding More

Fig. 2.11 Key components of the gas tungsten arc welding process. Source: Ref 2.7 More

Fig. 2.12 Effect of polarity on gas tungsten arc welding weld configuration when using direct current: (a) direct current electrode negative (DCEN), deep penetration, narrow melted area, approximate 30% heat in electrode and 70% heat in base metal; (b) direct current electrode positive (DCEP More

Fig. 2.15 Plasma–gas tungsten arc welding equipment. Source: Ref 2.3 More

Fig. 2.38 Key components of the gas tungsten arc welding process. Source: Ref 2.28 More

Fig. 5.38 Gas tungsten arc welding schematic More

Fig. 37 Effect of gas tungsten arc weld shielding gas composition on the corrosion resistance of two austenitic stainless steels. Welded strip samples were tested according to ASTM G 48; test temperature was 35 °C (95 °F). Source: Ref 19 More

Fig. 21 Effect of gas tungsten arc weld shielding gas composition on the corrosion resistance of two austenitic stainless steels. Welded strip samples were tested according to ASTM G48; test temperature was 35 °C (95 °F). Source: Ref 8 More

Fig. 25 Typical profiles for (a) burr grinding and (b) gas tungsten arc weld dressing of weld toe. HAZ, heat-affected zone. Source: Ref 16 More

Fig. 10 Notch toughness (a) of a gas-tungsten arc welded high-purity ferritic stainless steel (6 mm, or 1 4 in., thick E-Brite 26-1 plate) vs. that of a titanium-stabilized alloy (3 mm, or 1 8 in., thick 26-1 Ti plate), (b) Charpy V-notch toughness of shielded More

Fig. 9.6 Postweld heat-treated gas-tungsten arc-welded fusion zone in beta-C sheet. (a) Aged at 482 °C (900 °F) for 24 h, 275×. (b) Same heat treatment as (a). 690×. (c) Aged at 593 °C (1100 °F) for 8 h. 275×. (d) Same heat treatment as (c). 690× More

Fig. 4 Cross sections of partial penetration gas-tungsten arc welds in high-purity Fe-28Cr-2Mo ferritic stainless steel. (a) Weld in warm-rolled sheet. (b) Weld in sheet which was preweld annealed at 1040 °C (1900 °F) for 60 min. Etched in 40% nitric acid electroetch. 11× More

Fig. 7 Preferential corrosion of autogenous gas tungsten arc weld in alloy B-2 exposed to boiling 60% H 2 SO 4 +8% HCl More

Fig. 14 Corrosion rates for wrought and for gas tungsten arc welded (GTAW) alloy C-22 (UNS N06022). (a) In boiling sulfuric acid/ferric sulfate (ASTM G 28 Method A). (b) In boiling 2.5% HCl solution. Source: Ref 42 More

Fig. 3 Corrosion rates for wrought and for gas tungsten arc welded (GTAW) alloy C-22 (UNS N06022). (a) In boiling sulfuric acid/ferric sulfate (ASTM G28 Method A). (b) In boiling 2.5% HCl solution. Source: Ref 25 More

Fig. 7 Preferential corrosion of autogenous gas tungsten arc weld in Hastelloy alloy B-2 exposed to boiling 60% H 2 SO 4 + 8% HCl More

Fig. 46 Microstructure of bead-on-tube weld made by autogenous gas tungsten arc welding with an arc energy of 3 kJ/mm (76 kJ/in.). Virtually no chromium nitrides are present, which results in adequate pitting resistance. 200×. Source: Ref 14 More

Fig. 45 Microstructure of bead-on-tube weld made by autogenous gas tungsten arc welding with an arc energy of 0.5 kJ/mm (13 kJ/in.). Note the abundance of chromium nitrides in the ferrite phase. See also Fig. 46 . 200×. Source: Ref 14 More