Cold Compaction Behavior of Unsaturated Titanium Hydride Powders: Validation of Two Compaction Equations
Unsaturated titanium hydride (TiH<sub>X</sub>) powder has high formability and is a promising raw material for titanium-based powder metallurgy. In this work, TiH<sub>2</sub>, TiH<sub>X</sub>, and HDH Ti powders were characterized, the cold compaction behavior of...
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MDPI AG
2023-02-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/2/360 |
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| author | Liu Luo Yuchu Sun Yongbai Tang |
| author_facet | Liu Luo Yuchu Sun Yongbai Tang |
| author_sort | Liu Luo |
| collection | DOAJ |
| description | Unsaturated titanium hydride (TiH<sub>X</sub>) powder has high formability and is a promising raw material for titanium-based powder metallurgy. In this work, TiH<sub>2</sub>, TiH<sub>X</sub>, and HDH Ti powders were characterized, the cold compaction behavior of the powders was investigated, and the densification mechanism was analyzed. The TiH<sub>X</sub> was a three-phase mixture containing an α plastic phase and δ and ε brittle phases through Rietveld refinement. The TiH<sub>X</sub> compacts had compressive strength of over 420 MPa (higher than TiH<sub>2</sub> and similar to HDHTi) and relative density of over 80% (higher than TiH<sub>2</sub> and HDH Ti) at 600 MPa. The Gerdemann–Jablonski and Cooper–Eaton equation were used to simulate the powder compaction curves and describe powder compaction behavior. The plastic deformation of TiH<sub>X</sub> powder is greater than TiH<sub>2,</sub> and the particle rearrangement is greater than HDH Ti during cold compaction. Such compaction behavior of TiH<sub>X</sub> causes an excellent green-strength–relative-density combination. |
| first_indexed | 2024-03-11T08:25:29Z |
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| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T08:25:29Z |
| publishDate | 2023-02-01 |
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| spelling | doaj.art-b8b5a11e7af04d41ae16b2ee55a347ad2023-11-16T22:08:13ZengMDPI AGMetals2075-47012023-02-0113236010.3390/met13020360Cold Compaction Behavior of Unsaturated Titanium Hydride Powders: Validation of Two Compaction EquationsLiu Luo0Yuchu Sun1Yongbai Tang2College of Materials Science and Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610065, ChinaUnsaturated titanium hydride (TiH<sub>X</sub>) powder has high formability and is a promising raw material for titanium-based powder metallurgy. In this work, TiH<sub>2</sub>, TiH<sub>X</sub>, and HDH Ti powders were characterized, the cold compaction behavior of the powders was investigated, and the densification mechanism was analyzed. The TiH<sub>X</sub> was a three-phase mixture containing an α plastic phase and δ and ε brittle phases through Rietveld refinement. The TiH<sub>X</sub> compacts had compressive strength of over 420 MPa (higher than TiH<sub>2</sub> and similar to HDHTi) and relative density of over 80% (higher than TiH<sub>2</sub> and HDH Ti) at 600 MPa. The Gerdemann–Jablonski and Cooper–Eaton equation were used to simulate the powder compaction curves and describe powder compaction behavior. The plastic deformation of TiH<sub>X</sub> powder is greater than TiH<sub>2,</sub> and the particle rearrangement is greater than HDH Ti during cold compaction. Such compaction behavior of TiH<sub>X</sub> causes an excellent green-strength–relative-density combination.https://www.mdpi.com/2075-4701/13/2/360titanium powder metallurgytitanium-based powderscold compactionGerdemann–Jablonski equationCooper–Eaton equation |
| spellingShingle | Liu Luo Yuchu Sun Yongbai Tang Cold Compaction Behavior of Unsaturated Titanium Hydride Powders: Validation of Two Compaction Equations Metals titanium powder metallurgy titanium-based powders cold compaction Gerdemann–Jablonski equation Cooper–Eaton equation |
| title | Cold Compaction Behavior of Unsaturated Titanium Hydride Powders: Validation of Two Compaction Equations |
| title_full | Cold Compaction Behavior of Unsaturated Titanium Hydride Powders: Validation of Two Compaction Equations |
| title_fullStr | Cold Compaction Behavior of Unsaturated Titanium Hydride Powders: Validation of Two Compaction Equations |
| title_full_unstemmed | Cold Compaction Behavior of Unsaturated Titanium Hydride Powders: Validation of Two Compaction Equations |
| title_short | Cold Compaction Behavior of Unsaturated Titanium Hydride Powders: Validation of Two Compaction Equations |
| title_sort | cold compaction behavior of unsaturated titanium hydride powders validation of two compaction equations |
| topic | titanium powder metallurgy titanium-based powders cold compaction Gerdemann–Jablonski equation Cooper–Eaton equation |
| url | https://www.mdpi.com/2075-4701/13/2/360 |
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