Effect of Grain Orientation on Hydrogen Embrittlement Behavior of Interstitial-Free Steel
In interstitial-free (IF) steel with a certain microtexture, the micro-orientation of grains is essential to understand the occurrence of hydrogen-induced cracking in body-centered cubic (BCC) structural steels. In this study, the hydrogen embrittlement (HE) susceptibility of IF steels was determine...
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MDPI AG
2022-06-01
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| Online Access: | https://www.mdpi.com/2075-4701/12/6/981 |
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| author | Wei Wang Hao Fu Hailong Zhang Yu Yan Jinxu Li |
| author_facet | Wei Wang Hao Fu Hailong Zhang Yu Yan Jinxu Li |
| author_sort | Wei Wang |
| collection | DOAJ |
| description | In interstitial-free (IF) steel with a certain microtexture, the micro-orientation of grains is essential to understand the occurrence of hydrogen-induced cracking in body-centered cubic (BCC) structural steels. In this study, the hydrogen embrittlement (HE) susceptibility of IF steels was determined by slow strain rate tensile (SSRT) tests and hydrogen microprinting (HMT) experiments from the perspective of crystal orientation. The strength of the specimen with hydrogen was slightly higher than that without hydrogen, while the ductility and toughness were drastically reduced by hydrogen charging during the SSRT test. The HE susceptibility was characterized by the loss of elongation (I<sub>δ</sub>) and toughness (I<sub>ψ</sub>), with losses of 46.3% and 70%, respectively. The microstructural observations indicate that cracks initiated along grains oriented in the {100} || normal direction (ND), and grain boundaries (GBs) around {100}||ND were prone to be enriched in hydrogen atoms; that is, {100} || ND showed poor resistance to intergranular cracking and susceptible to hydrogen segregation. HMT was used to confirm the above viewpoints. Meanwhile, the statistical results showed those high-angle misorientations of 50–60° deviation are the locations most vulnerable to fracture. |
| first_indexed | 2024-03-09T23:02:45Z |
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| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T23:02:45Z |
| publishDate | 2022-06-01 |
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| spelling | doaj.art-26e4d08145f64033ae9e5aca2ef90ab02023-11-23T17:58:16ZengMDPI AGMetals2075-47012022-06-0112698110.3390/met12060981Effect of Grain Orientation on Hydrogen Embrittlement Behavior of Interstitial-Free SteelWei Wang0Hao Fu1Hailong Zhang2Yu Yan3Jinxu Li4Corrosion and Protection Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaCorrosion and Protection Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaNCS Testing Technology Co., Ltd., Beijing 100083, ChinaCorrosion and Protection Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaCorrosion and Protection Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaIn interstitial-free (IF) steel with a certain microtexture, the micro-orientation of grains is essential to understand the occurrence of hydrogen-induced cracking in body-centered cubic (BCC) structural steels. In this study, the hydrogen embrittlement (HE) susceptibility of IF steels was determined by slow strain rate tensile (SSRT) tests and hydrogen microprinting (HMT) experiments from the perspective of crystal orientation. The strength of the specimen with hydrogen was slightly higher than that without hydrogen, while the ductility and toughness were drastically reduced by hydrogen charging during the SSRT test. The HE susceptibility was characterized by the loss of elongation (I<sub>δ</sub>) and toughness (I<sub>ψ</sub>), with losses of 46.3% and 70%, respectively. The microstructural observations indicate that cracks initiated along grains oriented in the {100} || normal direction (ND), and grain boundaries (GBs) around {100}||ND were prone to be enriched in hydrogen atoms; that is, {100} || ND showed poor resistance to intergranular cracking and susceptible to hydrogen segregation. HMT was used to confirm the above viewpoints. Meanwhile, the statistical results showed those high-angle misorientations of 50–60° deviation are the locations most vulnerable to fracture.https://www.mdpi.com/2075-4701/12/6/981IF steelhydrogen embrittlementgrain orientationslow strain rate tensilehydrogen microprintcrack initiation |
| spellingShingle | Wei Wang Hao Fu Hailong Zhang Yu Yan Jinxu Li Effect of Grain Orientation on Hydrogen Embrittlement Behavior of Interstitial-Free Steel Metals IF steel hydrogen embrittlement grain orientation slow strain rate tensile hydrogen microprint crack initiation |
| title | Effect of Grain Orientation on Hydrogen Embrittlement Behavior of Interstitial-Free Steel |
| title_full | Effect of Grain Orientation on Hydrogen Embrittlement Behavior of Interstitial-Free Steel |
| title_fullStr | Effect of Grain Orientation on Hydrogen Embrittlement Behavior of Interstitial-Free Steel |
| title_full_unstemmed | Effect of Grain Orientation on Hydrogen Embrittlement Behavior of Interstitial-Free Steel |
| title_short | Effect of Grain Orientation on Hydrogen Embrittlement Behavior of Interstitial-Free Steel |
| title_sort | effect of grain orientation on hydrogen embrittlement behavior of interstitial free steel |
| topic | IF steel hydrogen embrittlement grain orientation slow strain rate tensile hydrogen microprint crack initiation |
| url | https://www.mdpi.com/2075-4701/12/6/981 |
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