Products tagged with 'stress-corrosion cracking'

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Corrosion Performance of N10675 Alloy Welds Prepared by Different Welding Methods

Product Number: 51324-20730-SG

Author: Ling Chen; Jeremy L. Caron; Vinay Deodeshmukh

Publication Date: 2024

$40.00

The corrosion performance of N10675 alloy weldments prepared by GMAW (Gas Metal Arc Welding/MIG Welding), GTAW (Gas Tungsten Arc Welding/TIG Welding) and SMAW (Shielded Metal Arc Welding/Stick Welding) were evaluated. Welded plates (0.5”-thick) and sheets (0.125”-thick) were investigated in this work. Overall corrosion loss rates in boiling 20%HCl acid were similar, irrespective of the type of welding method. Intergranular penetration attack occurred at the heat-affected-zones (HAZ) of all three as-welded 0.5”-thick plates and was more pronounced near the weld root. GMAW samples exhibited a slightly deeper corrosion penetration attack compared to GTAW and SMAW samples. While the corrosion rates of 0.5”-thick weld samples postweld heat treated (PWHT) at 1066°C were slightly higher than as-welded samples for each welding method, PWHT was shown to significantly lessen the depth of intergranular corrosion attack in the HAZ. In contrast, the impact of PWHT on the corrosion performance of the thin-gauge sheet welds was negligible. In addition, no stress-corrosion cracking (SCC) occurred on 0.125”-thick U-bend welded sheets prepared by GMAW, GTAW and SMAW.

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Influence Of Cavitation Peening On The Propagation Of Stress Corrosion Cracks With Various Depths In Alloy 182 Exposed To PWR Primary Water

Product Number: ED22-17250_2-SG

Author: Mychailo Toloczko, Ryan Bouffioux, Chris Waskey, Darren Wood, Eric Visse, Sophie Maingot, Dojun Na, Daniel Brimbal, Antoine Marion, Maxime Berthaud, Jean Paul Massoud

Publication Date: 2022

$20.00

Alloy 600 and its weld alloys 182 and 82 are susceptible to Primary Water Stress Corrosion Cracking (PWSCC). Various mitigation techniques have been developed and qualified in recent years that aim to use compressive surface membrane stresses to prevent cracks from forming or to stop the growth of short cracks. As described in the parent article (“Part 1”), Ultra-High Pressure Cavitation Peening (UHPCP) developed by Framatome (previously AREVA NP) uses this approach to mitigate Alloy 600 and
Alloy 182 locations against PWSCC.

Products tagged with 'stress-corrosion cracking'

Corrosion Performance of N10675 Alloy Welds Prepared by Different Welding Methods

Influence Of Cavitation Peening On The Propagation Of Stress Corrosion Cracks With Various Depths In Alloy 182 Exposed To PWR Primary Water

Association for Materials Protection and Performance