Stress corrosion crack initiation in filler metal 82 in oxygenated high-temperature water

被引：3
作者：
Supornpaibul, N. [1 ]
Duff, J. [1 ]
Burke, M. G. [1 ,2 ]
Wang, Y. [3 ]
Scenini, F. [1 ]
机构：
[1] Univ Manchester, Mat Performance Ctr, Sch Nat Sci, Dept Mat, Sackville St Campus, Manchester M13 9PL, England
[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[3] Hitachi Ltd, Prod Engn & MONOZUKURI, Prod Syst Res Dept, 7-1-1 Omika Cho, Hitachi, Ibaraki 3191292, Japan
来源：
CORROSION SCIENCE | 2023年 / 214卷
基金：
英国工程与自然科学研究理事会;
关键词：
Nickel; Welding; Alloy; 82; Stress corrosion; SSRT; Oxidation; PREFERENTIAL INTERGRANULAR OXIDATION; AUSTENITIC STAINLESS-STEEL; OXIDE-FILM FORMATION; ALLOY; 600; 288-DEGREES-C WATER; BOUNDARY MIGRATION; HYDROGENATED STEAM; NICKEL-ALLOYS; BEHAVIOR; MECHANISM;
D O I：
10.1016/j.corsci.2023.111008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Stress Corrosion Cracking (SCC) initiation in filler metal (FM) 82 was studied in oxygenated (O2) water at 288 degrees C. Post-test microstructural characterization revealed that cracked grain boundaries (GBs) always exhibited a porous oxide incursion. Some intergranular (IG) cracks exhibited an oxide along the crack walls, which appeared to form after the crack advanced. Furthermore, similar porous oxide incursions were observed at the GBs on the non-stressed FM 82 coupon after oxidizing for a similar duration. The formation of oxide incursions is discussed, and the evolution of crack initiation is proposed.
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页数：13
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