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Intergranular corrosion

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870063
EISBN: 978-1-62708-299-0
... Abstract This chapter describes the mechanisms, characteristics, and prevention of intergranular and exfoliation corrosion in various aluminum alloys. It discusses susceptible alloys and recommended tempers and presents several examples of exfoliation in aircraft components. It also explains...
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Published: 01 January 2017
Fig. 8.4 Various types of intergranular corrosion. (a) Interdendritic corrosion in a cast structure. (b) Interfragmentary corrosion in a wrought, unrecrystallized structure. (c) Intergranular corrosion in a recrystallized wrought structure. All etched with Keller’s reagent. Original More
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Published: 01 August 1999
Fig. 1 Various types of intergranular corrosion. (a) Interdendritic corrosion in a cast structure. (b) Interfragmentary corrosion in a wrought, unrecrystallized structure. (c) Intergranluar corrosion in a recrystallized wrought structure. All etched with Keller’s reagent. 500× More
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Published: 01 November 2007
Fig. 13.8 Intergranular corrosion produced by sensitizing a 410 steel on tempering. Corrosion test: 14 days in 20% salt fog. Source: Ref 13.8 . Copyright: NACE International, 1953 More
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Published: 01 January 2000
Fig. 45 Intergranular corrosion of sensitized HAZ grain boundaries and methods for its prevention. The four different panels were joined by welding and then exposed to a hot solution of nitric-hydrofluoric acid (HNO 3 -HF). Weld decay, such as that shown in the type 304 steel (bottom right More
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Published: 01 January 2000
Fig. 5 Intergranular corrosion of a type 304L stainless steel tube in a shuttle orbiter ammonia boiler. (a) Test performed to show tube ductility. 1×. (b) Cross section through the thin-wall (0.2 mm, or 8 mils) tube revealing sensitization on outside diameter due to carbonaceous deposit formed More
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Published: 01 August 1999
Fig. 1 Comparison of pitting and intergranular corrosion morphologies. (a) Pitting-type corrosion in the surface of an aircraft wing plank from an alloy 7075–T6 extrusion. (b) Intergranular corrosion in alloy 7075–T6 plate. Grain boundaries were attacked, causing the grains to separate. Both More
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Published: 31 December 2020
Fig. 17 Intergranular corrosion in austenitic stainless steel. (a) Section through the center of the outside sidebar. Original magnification: 35×. (b) Evidence of intergranular corrosion. 10% oxalic acid, original magnification: 500×. Images courtesy of Jon Dossett More
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Published: 30 April 2021
Fig. 9.6 Intergranular corrosion in an austenitic stainless steel mixer propeller. The fractures occurred because of weakened metal. More
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Published: 01 June 2007
Fig. 3.8 Effect of carbon and nickel content on intergranular corrosion penetration rate of 18 wt% Cr-base stainless steels. Alloys sensitized for 100 h at 550 °C (1022 °F). Immersion in boiling 65% nitric acid. Pds., periods (48 h) of exposure. Source: Ref 14 More
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Published: 01 June 2007
Fig. 5.38 Effect of carbon content and cooling rate on intergranular corrosion of hydrogen-sintered 316. IG, intergranular. Source: Ref 45 . Reprinted with permission from MPIF, Metal Powder Industries Federation, Princeton, NJ More
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Published: 01 November 2012
Fig. 10 Intergranular corrosion of stainless steel. Source: Ref 6 More
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Published: 01 November 2012
Fig. 12 Intergranular corrosion in type 304 stainless steel. Original magnification: 100×. Source: Ref 3 More
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Published: 01 July 2000
Fig. 7.51 Interface profile of intergranular corrosion when the precipitate phase is anodic to the matrix phase. (a) Preferential corrosion of continuous AB 2 phase. (b) Preferential corrosion of discontinuous DE 3 phase More
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Published: 01 July 2000
Fig. 7.52 Interface profile of intergranular corrosion when solute-depleted zone is anodic to precipitate and undepleted matrix. (a) Intergranular attack when precipitate and solute-depleted zone is continuous. (b) Intergranular attack when precipitate and depleted zones are discontinuous More
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Published: 01 July 2000
Fig. 7.55 Effect of carbon content on susceptibility to intergranular corrosion of 18 wt% Cr-10 wt% Ni stainless steels in boiling acidified copper sulfate. Open circle, no corrosion; solid circle, intergranular corrosion. (a) 0.050% C, 18.22% Cr, 10.95% Ni, 0.049% N. (b) 0.027% C, 18.35% Cr More
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Published: 01 July 2000
Fig. 7.56 Time-temperature-sensitization curves for intergranular corrosion of type 347 stainless steel in boiling 65% nitric acid. mpy, mils per year. Source: Ref 85 More
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Published: 01 July 2000
Fig. 7.57 Effect of carbon and nickel content on intergranular corrosion penetration rate of 18 wt% Cr-base stainless steels. Alloys sensitized for 100 h at 550 °C. Immersion in boiling 65% nitric acid. Pds., periods (48 h) of exposure. Redrawn from Ref 84 More
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Published: 01 July 2000
Fig. 7.108 Intergranular corrosion in type 304 stainless steel resulting from sensitization heat treatment of 50 h at 630 °C. Conditions can be found in Fig. 7.107 . Source: Ref 166 More
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Published: 01 December 2006
Fig. 5 Intergranular corrosion (weld decay) of stainless steel weldments More