The Corrosion Susceptibility of 304L Stainless Steel Exposed to Crevice Environments
The present study focuses on the corrosion behavior of 304L stainless steel in crevice corrosion environments. The specimen with a salt deposit of 0.1 g/m<sup>2</sup> was assembled with a crevice former made of Poly-tetra fluoroethylene (PTFE) to make a test device. The assembled test de...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-04-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/15/9/3055 |
| _version_ | 1797504062469439488 |
|---|---|
| author | Kun-Chao Tsai Chun-Ping Yeh |
| author_facet | Kun-Chao Tsai Chun-Ping Yeh |
| author_sort | Kun-Chao Tsai |
| collection | DOAJ |
| description | The present study focuses on the corrosion behavior of 304L stainless steel in crevice corrosion environments. The specimen with a salt deposit of 0.1 g/m<sup>2</sup> was assembled with a crevice former made of Poly-tetra fluoroethylene (PTFE) to make a test device. The assembled test devices were kept at the ambient temperature of 45 °C in combination with a relative humidity of 45%, 55%, and 70%. After testing for 5000 h, the corroded area of the specimen exposed to 70% humidity was three times larger than that subjected to 45% humidity. For the specimen sustaining a tensile force, the crack growth rate was approximately 1.4 mm/year at the stress level of 300 MPa in a crevice corrosion environment with 0.1 g/m<sup>2</sup> of sea salt deposited on the surface. The small portion of intergranular cracking occurred at the surface due to the existed strain on the surface. As cracks propagate in a grain, the grain undergoes a greater localized deformation, and some secondary cracks would develop inside the grain; transgranular cracking was vigorous due to the path corrosion that nucleated at the slip steps. |
| first_indexed | 2024-03-10T03:59:17Z |
| format | Article |
| id | doaj.art-3cc32c6b16984f0986bbf234065f7f3b |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:59:17Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-3cc32c6b16984f0986bbf234065f7f3b2023-11-23T08:37:30ZengMDPI AGMaterials1996-19442022-04-01159305510.3390/ma15093055The Corrosion Susceptibility of 304L Stainless Steel Exposed to Crevice EnvironmentsKun-Chao Tsai0Chun-Ping Yeh1Division of Nuclear Fuels and Materials, Institute of Nuclear Energy Research, 1000 Wenhua Rd., Longtan District, Taoyuan City 32546, TaiwanDivision of Nuclear Fuels and Materials, Institute of Nuclear Energy Research, 1000 Wenhua Rd., Longtan District, Taoyuan City 32546, TaiwanThe present study focuses on the corrosion behavior of 304L stainless steel in crevice corrosion environments. The specimen with a salt deposit of 0.1 g/m<sup>2</sup> was assembled with a crevice former made of Poly-tetra fluoroethylene (PTFE) to make a test device. The assembled test devices were kept at the ambient temperature of 45 °C in combination with a relative humidity of 45%, 55%, and 70%. After testing for 5000 h, the corroded area of the specimen exposed to 70% humidity was three times larger than that subjected to 45% humidity. For the specimen sustaining a tensile force, the crack growth rate was approximately 1.4 mm/year at the stress level of 300 MPa in a crevice corrosion environment with 0.1 g/m<sup>2</sup> of sea salt deposited on the surface. The small portion of intergranular cracking occurred at the surface due to the existed strain on the surface. As cracks propagate in a grain, the grain undergoes a greater localized deformation, and some secondary cracks would develop inside the grain; transgranular cracking was vigorous due to the path corrosion that nucleated at the slip steps.https://www.mdpi.com/1996-1944/15/9/3055304Lstainless steelcrevice corrosion |
| spellingShingle | Kun-Chao Tsai Chun-Ping Yeh The Corrosion Susceptibility of 304L Stainless Steel Exposed to Crevice Environments Materials 304L stainless steel crevice corrosion |
| title | The Corrosion Susceptibility of 304L Stainless Steel Exposed to Crevice Environments |
| title_full | The Corrosion Susceptibility of 304L Stainless Steel Exposed to Crevice Environments |
| title_fullStr | The Corrosion Susceptibility of 304L Stainless Steel Exposed to Crevice Environments |
| title_full_unstemmed | The Corrosion Susceptibility of 304L Stainless Steel Exposed to Crevice Environments |
| title_short | The Corrosion Susceptibility of 304L Stainless Steel Exposed to Crevice Environments |
| title_sort | corrosion susceptibility of 304l stainless steel exposed to crevice environments |
| topic | 304L stainless steel crevice corrosion |
| url | https://www.mdpi.com/1996-1944/15/9/3055 |
| work_keys_str_mv | AT kunchaotsai thecorrosionsusceptibilityof304lstainlesssteelexposedtocreviceenvironments AT chunpingyeh thecorrosionsusceptibilityof304lstainlesssteelexposedtocreviceenvironments AT kunchaotsai corrosionsusceptibilityof304lstainlesssteelexposedtocreviceenvironments AT chunpingyeh corrosionsusceptibilityof304lstainlesssteelexposedtocreviceenvironments |