Role of Work-Hardened Surface Layer in Initiation of Environmentally Assisted Cracking in High-Temperature Water

Wang, S.; Takeda, Yoichi; Sakaguchi, Kei; Shoji, Tetsuo

doi:10.5006/1.3278292

Cited by 19 publications

(2 citation statements)

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“…The SCC of low-carbon austenitic stainless steels has been reported since 1990s (1) . Detailed investigation of such a process revealed that a work-hardened surface layer, which is often introduced during manufacturing processes, increases susceptibility to SCC (2)(3)(4) .…”

Section: Introductionmentioning

confidence: 99%

“…Previous research has revealed that an oxide film on stainless steel consisted of two layers, an inner layer of thin polycrystalline FeCr 2 O 4 and an outer layer of Fe 2 O 3 particles (10)(11)(12) . Wang et al reported that oxide films formed on an as-machined surface of 15Cr-15Ni stainless steel are thinner than those formed on a polished surface (4) . However, the microstructure and composition of oxide films formed on a work-hardened layer remain unclear.…”

Section: Introductionmentioning

confidence: 99%

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Growth Process of Oxide Films Formed on Type 316L Stainless Steel with Work-Hardened Surface Layers under Creviced Bent Beam Test Conditions in High-Temperature Water

Tomozawa

Miura

Kako

2013

JMMP

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A creviced bent beam (CBB) test was performed on Type 316L stainless steels with work-hardened surface layers in high-temperature water at 561 K. Growth process of the oxide films on the surface was investigated by cross-sectional transmission electron microscope observation. The oxide films were found to consist of an inner Cr-rich layer and an outer layer of Fe 3 O 4 particles. The crystal structure of the inner layer changed from a face center cubic to a spinel-type with an increase in CBB test duration. The inner layers showed a cube-on-cube orientation relationship with adjacent austenite grains of the substrates.

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Section: Introductionmentioning

confidence: 99%