Comparison of Hydrogen Embrittlement Susceptibility of Different Types of Advanced High-Strength Steels
This study investigated the hydrogen embrittlement (HE) characteristics of advanced high-strength steels (AHSSs). Two different types of AHSSs with a tensile strength of 1.2 GPa were investigated. Slow strain rate tests (SSRTs) were performed under various applied potentials (E<sub>app</sub...
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2022-05-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/9/3406 |
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| author | Sangwon Cho Geon-Il Kim Sang-Jin Ko Jin-Seok Yoo Yeon-Seung Jung Yun-Ha Yoo Jung-Gu Kim |
| author_facet | Sangwon Cho Geon-Il Kim Sang-Jin Ko Jin-Seok Yoo Yeon-Seung Jung Yun-Ha Yoo Jung-Gu Kim |
| author_sort | Sangwon Cho |
| collection | DOAJ |
| description | This study investigated the hydrogen embrittlement (HE) characteristics of advanced high-strength steels (AHSSs). Two different types of AHSSs with a tensile strength of 1.2 GPa were investigated. Slow strain rate tests (SSRTs) were performed under various applied potentials (E<sub>app</sub>) to identify the mechanism with the greatest effect on the embrittlement of the specimens. The SSRT results revealed that, as the E<sub>app</sub> increased, the elongation tended to increase, even when a potential exceeding the corrosion potential was applied. Both types of AHSSs exhibited embrittled fracture behavior that was dominated by HE. The fractured SSRT specimens were subjected to a thermal desorption spectroscopy analysis, revealing that diffusible hydrogen was trapped mainly at the grain boundaries and dislocations (i.e., reversible hydrogen-trapping sites). The micro-analysis results revealed that the poor HE resistance of the specimens was attributed to the more reversible hydrogen-trapping sites. |
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| id | doaj.art-dbe0f7c7db0b4abf89d90143bec55885 |
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| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:57:59Z |
| publishDate | 2022-05-01 |
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| spelling | doaj.art-dbe0f7c7db0b4abf89d90143bec558852023-11-23T08:42:56ZengMDPI AGMaterials1996-19442022-05-01159340610.3390/ma15093406Comparison of Hydrogen Embrittlement Susceptibility of Different Types of Advanced High-Strength SteelsSangwon Cho0Geon-Il Kim1Sang-Jin Ko2Jin-Seok Yoo3Yeon-Seung Jung4Yun-Ha Yoo5Jung-Gu Kim6School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, KoreaSchool of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, KoreaSchool of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, KoreaSchool of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, KoreaSteel Solution Research Laboratory, POSCO Global R&D Center, Incheon 21985, KoreaSteel Solution Research Laboratory, POSCO Global R&D Center, Incheon 21985, KoreaSchool of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, KoreaThis study investigated the hydrogen embrittlement (HE) characteristics of advanced high-strength steels (AHSSs). Two different types of AHSSs with a tensile strength of 1.2 GPa were investigated. Slow strain rate tests (SSRTs) were performed under various applied potentials (E<sub>app</sub>) to identify the mechanism with the greatest effect on the embrittlement of the specimens. The SSRT results revealed that, as the E<sub>app</sub> increased, the elongation tended to increase, even when a potential exceeding the corrosion potential was applied. Both types of AHSSs exhibited embrittled fracture behavior that was dominated by HE. The fractured SSRT specimens were subjected to a thermal desorption spectroscopy analysis, revealing that diffusible hydrogen was trapped mainly at the grain boundaries and dislocations (i.e., reversible hydrogen-trapping sites). The micro-analysis results revealed that the poor HE resistance of the specimens was attributed to the more reversible hydrogen-trapping sites.https://www.mdpi.com/1996-1944/15/9/3406advanced high-strength steelhydrogen embrittlementhydrogen trappingthermal desorption spectroscopy |
| spellingShingle | Sangwon Cho Geon-Il Kim Sang-Jin Ko Jin-Seok Yoo Yeon-Seung Jung Yun-Ha Yoo Jung-Gu Kim Comparison of Hydrogen Embrittlement Susceptibility of Different Types of Advanced High-Strength Steels Materials advanced high-strength steel hydrogen embrittlement hydrogen trapping thermal desorption spectroscopy |
| title | Comparison of Hydrogen Embrittlement Susceptibility of Different Types of Advanced High-Strength Steels |
| title_full | Comparison of Hydrogen Embrittlement Susceptibility of Different Types of Advanced High-Strength Steels |
| title_fullStr | Comparison of Hydrogen Embrittlement Susceptibility of Different Types of Advanced High-Strength Steels |
| title_full_unstemmed | Comparison of Hydrogen Embrittlement Susceptibility of Different Types of Advanced High-Strength Steels |
| title_short | Comparison of Hydrogen Embrittlement Susceptibility of Different Types of Advanced High-Strength Steels |
| title_sort | comparison of hydrogen embrittlement susceptibility of different types of advanced high strength steels |
| topic | advanced high-strength steel hydrogen embrittlement hydrogen trapping thermal desorption spectroscopy |
| url | https://www.mdpi.com/1996-1944/15/9/3406 |
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