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Weld decay

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Published: 01 December 2015
Fig. 15 Diagram of weld decay (sensitization) in an austenitic stainless steel weldment. Source: Ref 3 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. 4 Weld decay (sensitization) in austenitic stainless steel and methods for its prevention. Panels of four different 300-series stainless steels were joined by welding and exposed to hot HNO 3 + HF solution. The weld decay evident in the type 304 panel was prevented in the other panels More
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Published: 31 December 2020
Fig. 10 Weld decay and methods for its prevention. The four different panels were joined by welding and then exposed to a hot solution of HNO 3 /HF. Weld decay, such as that shown in the type 304 steel (bottom right), is prevented by reduction of the carbon content (type 304L, top left More
Image
Published: 01 December 2015
Fig. 3 Weld decay and methods for its prevention. The four different panels were joined by welding and then exposed to a hot solution of HNO 3 /HF. Weld decay, such as that shown in the type 304 steel (bottom right), is prevented by reduction of the carbon content (type 304L, top left More
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Published: 01 December 2015
Fig. 16 Weld decay and methods for its prevention. The four different panels were joined by welding and then exposed to a hot solution of HNO 3 /HF. Weld decay, such as that shown for the type 304 steel (bottom right), is prevented by reduction of the carbon content (type 304L, top left 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 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
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930189
EISBN: 978-1-62708-359-1
... is known to be highly anodic to A285 base metal in a seawater environment ( Ref 7 ). It is important to select a suitable filler metal when an application involves a harsh environment. Weld Decay of Stainless Steel During welding of stainless steels, local sensitized zones (i.e., regions susceptible...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820001
EISBN: 978-1-62708-339-3
... to select a suitable filler metal when an application involves a harsh environment. Weld Decay of Stainless Steel During welding of stainless steels, local sensitized zones (i.e., regions susceptible to corrosion) often develop. Sensitization is due to the formation of chromium carbide along grain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030096
EISBN: 978-1-62708-282-2
... corrosion problem in stainless steels is weld decay (sensitization) caused by carbide precipitation in the weld HAZ. Sensitization occurs in a zone subject to a critical thermal cycle in which chromium-rich carbides precipitate and in which chromium diffusion is much slower than that of carbon. The carbides...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820169
EISBN: 978-1-62708-339-3
...-hardenable nickel-chromium alloy is welded to a nonstabilized austenitic stainless steel, exposure of the weldment to the aging treatment for the nickel-chromium alloy would sensitize the stainless steel and decrease its resistance to intergranular corrosion (weld decay). One solution is to use...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030112
EISBN: 978-1-62708-282-2
... alloy B has been used since approximately 1929 and has suffered from one significant limitation: weld decay. The welded structure has shown high susceptibility to knife-line attack adjacent to the weld metal and to HAZ attack at some distance from the weld. The former has been attributed...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930365
EISBN: 978-1-62708-359-1
..., 302) … … … … Arc welding not recommended. Flash welding possible. Austenitic stainless steel types: 303, 304 L, 304, 305, 309, 310, 314, 316, 321, 347 Not recommended 950–1150 If undertaken—or stress relieve below 650 °C (to avoid weld decay). Excellent weldability. Filler materials...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.9781627083591
EISBN: 978-1-62708-359-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820043
EISBN: 978-1-62708-339-3
... (weld decay) caused by carbide precipitation in the weld HAZ. Sensitized structures are susceptible in intergranular corrosion. Mechanism At temperatures above approximately 1035 °C (1900 °F), chromium carbides are completely dissolved in austenitic stainless steels. However, when these steels...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030062
EISBN: 978-1-62708-282-2
... in as-welded austenitic stainless steels. It also shows that the sensitized zone in these steels is somewhat removed from the weld metal. Fig. 3 Weld decay and methods for its prevention. The four different panels were joined by welding and then exposed to a hot solution of HNO 3 /HF. Weld decay...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820125
EISBN: 978-1-62708-339-3
... but of differentmicrostructure. Each of these areas responds differently to the external corrosive environment. Nickel-Molybdenum Alloys As discussed earlier in this chapter, alloy B has been used since the 1920s and has suffered from one significant limitation: weld decay. The welded structure has shown high...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720411
EISBN: 978-1-62708-305-8
...Abstract Abstract Weldments made by the various welding processes may contain discontinuities that are characteristic of that process. This chapter discusses the different welding processes as well as the discontinuities typical of each process. It provides a detailed discussion on the methods...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930085
EISBN: 978-1-62708-359-1
...Abstract Abstract Welded joints in any component or structure require a thorough inspection. The role of nondestructive evaluation (NDE) in the inspection of welds is very important, and the technology has become highly developed as a result. This article describes the applications, methods...