Fractography of Stress Corrosion Cracking of 20% Cold Worked Type 304 H Stainless Steel Containing δ-Ferrite in Oxidizing Primary Water

Fractography of stress corrosion cracking (SCC) of 20% cold worked Type 304 H stainless steel containing δ-ferrite was studied using a compact tension (CT) specimen in oxidizing primary water with a scanning electron microscope (SEM) and electron back scattered diffraction (EBSD). The stress corrosi...

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Vydáno v:Archives of metallurgy and materials Ročník 69; číslo 1; s. 49 - 52
Hlavní autoři: Kim, Hong-Pyo, Lee, Jong-Yeon, Cho, Sung-Hwan, Choi, Min-Jae, Kim, Sung-Woo, Jin, Hyung-Ha, Kim, Dong-Jin, Hwang, Seoung-Sik, Lim, Yun-Soo
Médium: Journal Article
Jazyk:angličtina
Vydáno: Warsaw Polish Academy of Sciences 2024
Témata:
Cold
Cold working
Compact tension
Corrosion
Crack propagation
Crack tips
Delta ferrite
Electron back scatter
Fractography
Grain boundaries
Intergranular corrosion
Metal fatigue
Oxidation
primary water
Shear stress
Stainless steel
Stainless steels
Stress corrosion cracking
stress corrosion cracking (scc)
Stress propagation
Tensile stress
type 304 h stainless steel
Water
Yield stress
ISSN:2300-1909, 1733-3490, 2300-1909
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Popis
Shrnutí:Fractography of stress corrosion cracking (SCC) of 20% cold worked Type 304 H stainless steel containing δ-ferrite was studied using a compact tension (CT) specimen in oxidizing primary water with a scanning electron microscope (SEM) and electron back scattered diffraction (EBSD). The stress corrosion crack propagated mostly in transgranular stress corrosion cracking (TGSCC) mode and sometimes in intergranular stress corrosion cracking (IGSCC) mode. TGSCC paths were along the {111} plane with both high resolved shear stress and high resolved tensile stress. IGSCC preferentially propagated along the grain boundary perpendicular to the loading axis. The findings in this work suggest that TGSCC proceeds through formation of a weakening zone at the head of the crack tip by interaction of slip and corrosion and then cracking of the weakened zone by tensile stress.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:2300-1909
1733-3490
2300-1909
DOI:10.24425/amm.2024.147783