Hydrogen absorption kinetics and microstructural features of TiFe0.8Mn0.2 alloy
This study investigated the microstructural features and the hydrogen absorption properties of as-cast, 10 h annealed, and 20 h annealed TiFe0.8Mn0.2 alloy samples. TiFe with the Body-Centered Cubic (BCC) B2 structure and Fe2Ti with the C14 Laves hexagonal structure were observed in the alloy sample...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-01-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029570 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832595310676803584 |
|---|---|
| author | Ryun-Ho Kwak Taeyang Kwak Da Hye Lee Sojin Jung Jang-Won Kang Seongtak Kim Tae-Wook Na Seok Su Sohn Hyung-Ki Park Taejun Ha |
| author_facet | Ryun-Ho Kwak Taeyang Kwak Da Hye Lee Sojin Jung Jang-Won Kang Seongtak Kim Tae-Wook Na Seok Su Sohn Hyung-Ki Park Taejun Ha |
| author_sort | Ryun-Ho Kwak |
| collection | DOAJ |
| description | This study investigated the microstructural features and the hydrogen absorption properties of as-cast, 10 h annealed, and 20 h annealed TiFe0.8Mn0.2 alloy samples. TiFe with the Body-Centered Cubic (BCC) B2 structure and Fe2Ti with the C14 Laves hexagonal structure were observed in the alloy samples, and the amount of precipitated second phase Fe2Ti within the TiFe matrix phase was significantly reduced in both 10 h and 20 h annealed samples. During the annealing treatment, TiFe0.8Mn0.2 alloy changes in terms of the equilibrium phase fraction and chemical composition were predicted through Thermo-Calc software calculation. When the samples were hydrogenated under 40 bar of hydrogen at 20 °C, the 20 h annealed sample absorbed 1.6 wt% H2 within the longest time among the three samples. The maximum hydrogen absorption capacities of the three samples were found to be the same, exhibiting a value of 1.81 wt% H2. Furthermore, the Scanning Electron Microscope – Electron Backscatter Diffraction (SEM-EBSD) results showed that the annealing treatment increased the grain size of the B2 matrix by decreasing the grain boundary length. The long length of the B2 grain boundary due to the small B2 grain size appeared to assist the hydrogenation of the alloy by acting as pathways for supplying hydrogen to the inside of the alloy. |
| format | Article |
| id | doaj-art-256e7bf448094c888e27c40cdf3b91c0 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-256e7bf448094c888e27c40cdf3b91c02025-01-19T06:25:39ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013421742182Hydrogen absorption kinetics and microstructural features of TiFe0.8Mn0.2 alloyRyun-Ho Kwak0Taeyang Kwak1Da Hye Lee2Sojin Jung3Jang-Won Kang4Seongtak Kim5Tae-Wook Na6Seok Su Sohn7Hyung-Ki Park8Taejun Ha9Fuctional Materials and Components Group, Gangwon Technology Application Division (Functional Materials), Korea Institute of Industrial Technology, Gangwon, 25440, Republic of Korea; Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of KoreaRUAN Co., Ltd., Unit 203, 64, Gilju-ro, Bucheon-si, Gyeonggi-do, 14544, Republic of KoreaFuctional Materials and Components Group, Gangwon Technology Application Division (Functional Materials), Korea Institute of Industrial Technology, Gangwon, 25440, Republic of Korea; Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of KoreaFuctional Materials and Components Group, Gangwon Technology Application Division (Functional Materials), Korea Institute of Industrial Technology, Gangwon, 25440, Republic of Korea; Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of KoreaFuctional Materials and Components Group, Gangwon Technology Application Division (Functional Materials), Korea Institute of Industrial Technology, Gangwon, 25440, Republic of KoreaFuctional Materials and Components Group, Gangwon Technology Application Division (Functional Materials), Korea Institute of Industrial Technology, Gangwon, 25440, Republic of KoreaFuctional Materials and Components Group, Gangwon Technology Application Division (Functional Materials), Korea Institute of Industrial Technology, Gangwon, 25440, Republic of KoreaDepartment of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea; Corresponding author.Fuctional Materials and Components Group, Gangwon Technology Application Division (Functional Materials), Korea Institute of Industrial Technology, Gangwon, 25440, Republic of Korea; Corresponding author.Fuctional Materials and Components Group, Gangwon Technology Application Division (Functional Materials), Korea Institute of Industrial Technology, Gangwon, 25440, Republic of Korea; Corresponding author.This study investigated the microstructural features and the hydrogen absorption properties of as-cast, 10 h annealed, and 20 h annealed TiFe0.8Mn0.2 alloy samples. TiFe with the Body-Centered Cubic (BCC) B2 structure and Fe2Ti with the C14 Laves hexagonal structure were observed in the alloy samples, and the amount of precipitated second phase Fe2Ti within the TiFe matrix phase was significantly reduced in both 10 h and 20 h annealed samples. During the annealing treatment, TiFe0.8Mn0.2 alloy changes in terms of the equilibrium phase fraction and chemical composition were predicted through Thermo-Calc software calculation. When the samples were hydrogenated under 40 bar of hydrogen at 20 °C, the 20 h annealed sample absorbed 1.6 wt% H2 within the longest time among the three samples. The maximum hydrogen absorption capacities of the three samples were found to be the same, exhibiting a value of 1.81 wt% H2. Furthermore, the Scanning Electron Microscope – Electron Backscatter Diffraction (SEM-EBSD) results showed that the annealing treatment increased the grain size of the B2 matrix by decreasing the grain boundary length. The long length of the B2 grain boundary due to the small B2 grain size appeared to assist the hydrogenation of the alloy by acting as pathways for supplying hydrogen to the inside of the alloy.http://www.sciencedirect.com/science/article/pii/S2238785424029570Hydrogen storageTitanium alloyActivated hydrogenation kineticsSEM-EBSDGrain sizeGrain boundary length |
| spellingShingle | Ryun-Ho Kwak Taeyang Kwak Da Hye Lee Sojin Jung Jang-Won Kang Seongtak Kim Tae-Wook Na Seok Su Sohn Hyung-Ki Park Taejun Ha Hydrogen absorption kinetics and microstructural features of TiFe0.8Mn0.2 alloy Journal of Materials Research and Technology Hydrogen storage Titanium alloy Activated hydrogenation kinetics SEM-EBSD Grain size Grain boundary length |
| title | Hydrogen absorption kinetics and microstructural features of TiFe0.8Mn0.2 alloy |
| title_full | Hydrogen absorption kinetics and microstructural features of TiFe0.8Mn0.2 alloy |
| title_fullStr | Hydrogen absorption kinetics and microstructural features of TiFe0.8Mn0.2 alloy |
| title_full_unstemmed | Hydrogen absorption kinetics and microstructural features of TiFe0.8Mn0.2 alloy |
| title_short | Hydrogen absorption kinetics and microstructural features of TiFe0.8Mn0.2 alloy |
| title_sort | hydrogen absorption kinetics and microstructural features of tife0 8mn0 2 alloy |
| topic | Hydrogen storage Titanium alloy Activated hydrogenation kinetics SEM-EBSD Grain size Grain boundary length |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029570 |
| work_keys_str_mv | AT ryunhokwak hydrogenabsorptionkineticsandmicrostructuralfeaturesoftife08mn02alloy AT taeyangkwak hydrogenabsorptionkineticsandmicrostructuralfeaturesoftife08mn02alloy AT dahyelee hydrogenabsorptionkineticsandmicrostructuralfeaturesoftife08mn02alloy AT sojinjung hydrogenabsorptionkineticsandmicrostructuralfeaturesoftife08mn02alloy AT jangwonkang hydrogenabsorptionkineticsandmicrostructuralfeaturesoftife08mn02alloy AT seongtakkim hydrogenabsorptionkineticsandmicrostructuralfeaturesoftife08mn02alloy AT taewookna hydrogenabsorptionkineticsandmicrostructuralfeaturesoftife08mn02alloy AT seoksusohn hydrogenabsorptionkineticsandmicrostructuralfeaturesoftife08mn02alloy AT hyungkipark hydrogenabsorptionkineticsandmicrostructuralfeaturesoftife08mn02alloy AT taejunha hydrogenabsorptionkineticsandmicrostructuralfeaturesoftife08mn02alloy |