Influence of Product Type on Stress Corrosion Cracking of Alloy 600

Gómez-Briceño, D.; Blázquez, Francisco Cuadros; Hernández, F.

doi:10.5006/1.3283985

Cited by 4 publications

(1 citation statement)

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“…Owing to the higher cooling rate and greater temperature difference between the cap and root fusion zone, greater welding residual stress is induced in the root fusion zone. 26,27 Previous work 28 Comparison of corrosion resistance shows that G -52, with a higher chromium content, is superior to G -82. The concept of niobium addition to decrease the carbide precipitation along grain boundaries has been adopted to enhance corrosion resistance in alloy 600 -Nb bearings, which exhibit high corrosion resistance.…”

Section: Modified Huey Testmentioning

confidence: 86%

Characteristics of dissimilar welding of alloy 690 to 304L stainless steel

Lee

Jeng

2001

Science and Technology of Welding and Joining

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The object of the present work is to research the dissimilar welding of nickel based 690 alloy and SUS 304L stainless steel using two alternative Inconel filler metals, namely, 82 (I–82) and 52 (I–52). Gas tungsten arc welding with identical parameters and procedures was used to carry out single V groove butt welding with six passes in four layers on nickel based alloy 690 and 304L stainless steel. Mechanical and corrosion resistance tests were performed. Metallographical, fractographical, and compositional analysis were used to study filler metal dissimilarities. Mechanical tests show that the I–82 weldment, owing to its denser dendrites and formation of abundant niobium enriched precipitates, has a higher strength and hardness than the I–52 weldment. Rupture occurred in the alloy 690 base metal. In comparison, the I–52 weldment, with coarse dendrites and no niobium enriched precipitates, exhibits superior corrosion resistance to the I–82 weldment but has a lower tensile strength and ruptured in the fusion zone. Microstructural investigation reveals that I–52 is a mixture of cellular dendrites and columnar dendrites whereas I–82 is mainly columnar dendrites with niobium enriched precipitates.

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Section: Modified Huey Testmentioning

confidence: 86%