Effect on impact properties of adding tantalum to V-4Cr-4Ti ternary vanadium alloy
Four V-Ta-4Cr-4Ti quaternary alloys containing different quantities of Ta were investigated to determine the effect of Ta content on the Charpy impact properties. Five button-shaped ingots of the V-4Cr-4Ti ternary alloy and V-xTa-4Cr-4Ti quaternary alloys (x = 3, 9, 15, and 22 wt.%) were fabricated...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-06-01
|
| Series: | Nuclear Materials and Energy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179122000825 |
| _version_ | 1811255782043287552 |
|---|---|
| author | Takeshi Miyazawa Haruka Saito Yoshimitsu Hishinuma Takuya Nagasaka Takeo Muroga Jingjie Shen Yasuki Okuno Hao Yu Ryuta Kasada Akira Hasegawa |
| author_facet | Takeshi Miyazawa Haruka Saito Yoshimitsu Hishinuma Takuya Nagasaka Takeo Muroga Jingjie Shen Yasuki Okuno Hao Yu Ryuta Kasada Akira Hasegawa |
| author_sort | Takeshi Miyazawa |
| collection | DOAJ |
| description | Four V-Ta-4Cr-4Ti quaternary alloys containing different quantities of Ta were investigated to determine the effect of Ta content on the Charpy impact properties. Five button-shaped ingots of the V-4Cr-4Ti ternary alloy and V-xTa-4Cr-4Ti quaternary alloys (x = 3, 9, 15, and 22 wt.%) were fabricated on a laboratory scale by using non-consumable arc-melting in an argon atmosphere. Charpy impact tests were conducted at temperatures ranging from 77 K to 293 K using an instrumented impact tester. Both the upper shelf energy and the ductile–brittle transition temperature increased with increasing Ta content. The addition of 3 wt.% Ta resulted in solid solution strengthening without any degradation of the Charpy impact properties. Thus, the addition of 3 wt.% Ta (V-3Ta-4Cr-4Ti) is an appropriate amount to use in blanket structural materials for nuclear fusion reactors. The spectra of TEM-EDS for V-3Ta-4Cr-4Ti quaternary alloy indicate that there is no significant enrichment of Ta in the matrix as compared with that in the precipitate. However, thermal aging may result in the formation of the Laves phase, causing the degradation of Charpy impact properties. The characterization of precipitates, thermal aging, and creep tests of the V-3Ta-4Cr-4Ti quaternary alloy need to be investigated to determine the optimum Ta content. |
| first_indexed | 2024-04-12T17:30:19Z |
| format | Article |
| id | doaj.art-78bd7f62426e4263a3aeedd049ec2f27 |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-04-12T17:30:19Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-78bd7f62426e4263a3aeedd049ec2f272022-12-22T03:23:09ZengElsevierNuclear Materials and Energy2352-17912022-06-0131101198Effect on impact properties of adding tantalum to V-4Cr-4Ti ternary vanadium alloyTakeshi Miyazawa0Haruka Saito1Yoshimitsu Hishinuma2Takuya Nagasaka3Takeo Muroga4Jingjie Shen5Yasuki Okuno6Hao Yu7Ryuta Kasada8Akira Hasegawa9Tohoku University, Sendai 980-8579, Japan; Current Affiliation: Japan Atomic Energy Agency, Oarai, Ibaraki 311-1393, Japan; Corresponding author.Tohoku University, Sendai 980-8579, JapanNational Institute for Fusion Science, Toki, Gifu 509-5292, JapanNational Institute for Fusion Science, Toki, Gifu 509-5292, JapanNational Institute for Fusion Science, Toki, Gifu 509-5292, JapanNational Institute for Fusion Science, Toki, Gifu 509-5292, JapanInstitute for Materials Research, Tohoku University, Sendai 980-8577, JapanInstitute for Materials Research, Tohoku University, Sendai 980-8577, JapanInstitute for Materials Research, Tohoku University, Sendai 980-8577, JapanCurrent Affiliation: Japan Atomic Energy Agency, Oarai, Ibaraki 311-1393, JapanFour V-Ta-4Cr-4Ti quaternary alloys containing different quantities of Ta were investigated to determine the effect of Ta content on the Charpy impact properties. Five button-shaped ingots of the V-4Cr-4Ti ternary alloy and V-xTa-4Cr-4Ti quaternary alloys (x = 3, 9, 15, and 22 wt.%) were fabricated on a laboratory scale by using non-consumable arc-melting in an argon atmosphere. Charpy impact tests were conducted at temperatures ranging from 77 K to 293 K using an instrumented impact tester. Both the upper shelf energy and the ductile–brittle transition temperature increased with increasing Ta content. The addition of 3 wt.% Ta resulted in solid solution strengthening without any degradation of the Charpy impact properties. Thus, the addition of 3 wt.% Ta (V-3Ta-4Cr-4Ti) is an appropriate amount to use in blanket structural materials for nuclear fusion reactors. The spectra of TEM-EDS for V-3Ta-4Cr-4Ti quaternary alloy indicate that there is no significant enrichment of Ta in the matrix as compared with that in the precipitate. However, thermal aging may result in the formation of the Laves phase, causing the degradation of Charpy impact properties. The characterization of precipitates, thermal aging, and creep tests of the V-3Ta-4Cr-4Ti quaternary alloy need to be investigated to determine the optimum Ta content.http://www.sciencedirect.com/science/article/pii/S2352179122000825Blanket structural materialsImpact propertiesSolid solution strengthening |
| spellingShingle | Takeshi Miyazawa Haruka Saito Yoshimitsu Hishinuma Takuya Nagasaka Takeo Muroga Jingjie Shen Yasuki Okuno Hao Yu Ryuta Kasada Akira Hasegawa Effect on impact properties of adding tantalum to V-4Cr-4Ti ternary vanadium alloy Nuclear Materials and Energy Blanket structural materials Impact properties Solid solution strengthening |
| title | Effect on impact properties of adding tantalum to V-4Cr-4Ti ternary vanadium alloy |
| title_full | Effect on impact properties of adding tantalum to V-4Cr-4Ti ternary vanadium alloy |
| title_fullStr | Effect on impact properties of adding tantalum to V-4Cr-4Ti ternary vanadium alloy |
| title_full_unstemmed | Effect on impact properties of adding tantalum to V-4Cr-4Ti ternary vanadium alloy |
| title_short | Effect on impact properties of adding tantalum to V-4Cr-4Ti ternary vanadium alloy |
| title_sort | effect on impact properties of adding tantalum to v 4cr 4ti ternary vanadium alloy |
| topic | Blanket structural materials Impact properties Solid solution strengthening |
| url | http://www.sciencedirect.com/science/article/pii/S2352179122000825 |
| work_keys_str_mv | AT takeshimiyazawa effectonimpactpropertiesofaddingtantalumtov4cr4titernaryvanadiumalloy AT harukasaito effectonimpactpropertiesofaddingtantalumtov4cr4titernaryvanadiumalloy AT yoshimitsuhishinuma effectonimpactpropertiesofaddingtantalumtov4cr4titernaryvanadiumalloy AT takuyanagasaka effectonimpactpropertiesofaddingtantalumtov4cr4titernaryvanadiumalloy AT takeomuroga effectonimpactpropertiesofaddingtantalumtov4cr4titernaryvanadiumalloy AT jingjieshen effectonimpactpropertiesofaddingtantalumtov4cr4titernaryvanadiumalloy AT yasukiokuno effectonimpactpropertiesofaddingtantalumtov4cr4titernaryvanadiumalloy AT haoyu effectonimpactpropertiesofaddingtantalumtov4cr4titernaryvanadiumalloy AT ryutakasada effectonimpactpropertiesofaddingtantalumtov4cr4titernaryvanadiumalloy AT akirahasegawa effectonimpactpropertiesofaddingtantalumtov4cr4titernaryvanadiumalloy |