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weld corrosion

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820001
EISBN: 978-1-62708-339-3
... Abstract Corrosion failures of welds can occur even when the proper base metal and filler metal have been selected, industry codes and standards have been followed, and welds have been deposited that possess full weld penetration and have proper shape and contour. This chapter describes some...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820177
EISBN: 978-1-62708-339-3
... Abstract This chapter reviews weld corrosion in three key application areas: petroleum refining and petrochemical operations, boiling water reactor piping systems, and components used in pulp and paper plants. The discussion of each area addresses general design and service characteristics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820203
EISBN: 978-1-62708-339-3
...)</xref> The design of the coupon is an important part of any plant corrosion-testing program. Proper selection of the coupon shape, surface finish, metallurgical condition, and geometry allows evaluation of specific forms of corrosion. Figures 1 and 2 show examples of welded coupons for corrosion studies...
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Published: 01 March 2001
Fig. 5 Weld metal forming a corrosion cell on steel. Weld metal may be anodic to steel, creating a corrosion cell when immersed. More
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Published: 01 January 2000
Fig. 17 Effect of weld geometry on crevice corrosion susceptibility. (a) Single-butt weld. (b) Double-butt weld (preferred geometry). (c) Lap weld, single fillet. (d) Lap weld, double fillet More
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Published: 01 November 2007
Fig. 12.22 Pitting attack is the common mode of corrosion of alloy 625 weld overlay on the waterwall. Shown in the photograph are three tubes and three membranes. More
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Published: 01 July 1997
Fig. 5 Intergranular corrosion (weld decay) of stainless steel weldments. FZ, fusion zone More
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Published: 01 July 1997
Fig. 22 Pitting corrosion resistance of base metal relative to weld metal placed in 6 wt% FeCI 3 solution for 24 h per ASTM G 48 (method A). Source: Ref 35 More
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Published: 01 December 2006
Fig. 5 Intergranular corrosion (weld decay) of stainless steel weldments More
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Published: 01 December 2006
Fig. 13 Crevice corrosion under residual slag (S) in IN-135 weld metal after bleach plant exposure. Etched with glycergia. Source: Ref 4 More
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Published: 01 December 2006
Fig. 14 Microfissure corrosion on IN-135 weld metal on an alloy 904L test coupon after bleach plant exposure. See also Fig. 15 . Source: Ref 4 More
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Published: 01 December 2006
Fig. 16 Cross section of a weldment showing crevice corrosion under weld spatter. Oxides (light gray) have formed on the spatter and in the crevice between spatter and base metal. More
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Published: 01 December 2006
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
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Published: 01 December 2006
Fig. 9 Intergranular corrosion of a contaminated E-Brite stainless steel weld. Electrolytically etched with 10% oxalic acid. 200×. More
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Published: 01 December 2006
Fig. 9 Pitting corrosion resistance of base metal relative to weld metal placed in 6 wt % FeCl 3 solution for 24 h duration per ASTM 648 (method A). Source: Ref 14 More
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Published: 01 December 2006
Fig. 11 Preferential corrosion of the ferrite phase in the weld metal of Ferralium alloy 255 gas tungsten arc welds in 10% FeCl 3 at room temperature. Base metal was 3.2 mm (⅛ in.) thick. More
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Published: 01 December 2006
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
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Published: 01 December 2006
Fig. 12 Corrosion of the weld metal and the HAZ in alloys (a) C-22 and (b) C-276 in an aerated mixture of 6 vol% H 2 SO 4 + 3.9% Fe 2 (SO 4 ) 3 + other chemicals at 150 °C (300 °F.) Source: Ref 24 More
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Published: 01 December 2006
Fig. 1 Typical examples of weld coupons for corrosion monitoring and testing. Source: Metal Samples Company More
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Published: 01 December 2015
Fig. 10 Crevice corrosion under residual slag (S) in IN-135 weld metal after bleach plant exposure. Etched with glycergia. Source: Ref 5 More