Deformation Heating and Temperature Changes in a Near-β Titanium Alloy during β-Processed Forging
We investigated the temperature increase caused by heat generation from plastic deformation during β-processed forging in a near-β titanium alloy, Ti-17 alloy (Ti-5Al-2Sn-2Zr-4Cr-4Mo, wt%), by inserting thermocouples into large workpieces (100 mm in diameter and 50 mm in height). The workpiece was i...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-04-01
|
| Series: | Journal of Manufacturing and Materials Processing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-4494/6/2/47 |
| _version_ | 1827628191668240384 |
|---|---|
| author | Tomonori Kitashima Lingjian Meng |
| author_facet | Tomonori Kitashima Lingjian Meng |
| author_sort | Tomonori Kitashima |
| collection | DOAJ |
| description | We investigated the temperature increase caused by heat generation from plastic deformation during β-processed forging in a near-β titanium alloy, Ti-17 alloy (Ti-5Al-2Sn-2Zr-4Cr-4Mo, wt%), by inserting thermocouples into large workpieces (100 mm in diameter and 50 mm in height). The workpiece was initially heated and held at 1193 K (920 °C) in the single-β region. It was subsequently forged between hot dies in surrounding heaters at a compression percentage of 75% at strain rates of 0.05 and 0.5 s<sup>−1</sup> at 1023–1123 K in the (α + β) region. At 0.05 s<sup>−1</sup>, the temperature logarithmically increased by 39 K in 28 s for 1023 K; it increased by 30 K in 28 s for 1073 K. However, at 0.5 s<sup>−1</sup>, the material temperature increased, in 3 s, beyond or close to the β-transus temperature during forging at 1023 and 1073 K. In addition, as the forging temperature decreased, the increase in material temperature moderated, resulting in a difference of 27 K in the last forging stage, between the conditions of 1023 and 1073 K. This would reduce the temperature difference effect on microstructure formation during β-processed forging. |
| first_indexed | 2024-03-09T13:28:15Z |
| format | Article |
| id | doaj.art-73b27cec5be04f02a8ef450a39da2899 |
| institution | Directory Open Access Journal |
| issn | 2504-4494 |
| language | English |
| last_indexed | 2024-03-09T13:28:15Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Manufacturing and Materials Processing |
| spelling | doaj.art-73b27cec5be04f02a8ef450a39da28992023-11-30T21:20:54ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942022-04-01624710.3390/jmmp6020047Deformation Heating and Temperature Changes in a Near-β Titanium Alloy during β-Processed ForgingTomonori Kitashima0Lingjian Meng1National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Ibaraki, JapanNational Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Ibaraki, JapanWe investigated the temperature increase caused by heat generation from plastic deformation during β-processed forging in a near-β titanium alloy, Ti-17 alloy (Ti-5Al-2Sn-2Zr-4Cr-4Mo, wt%), by inserting thermocouples into large workpieces (100 mm in diameter and 50 mm in height). The workpiece was initially heated and held at 1193 K (920 °C) in the single-β region. It was subsequently forged between hot dies in surrounding heaters at a compression percentage of 75% at strain rates of 0.05 and 0.5 s<sup>−1</sup> at 1023–1123 K in the (α + β) region. At 0.05 s<sup>−1</sup>, the temperature logarithmically increased by 39 K in 28 s for 1023 K; it increased by 30 K in 28 s for 1073 K. However, at 0.5 s<sup>−1</sup>, the material temperature increased, in 3 s, beyond or close to the β-transus temperature during forging at 1023 and 1073 K. In addition, as the forging temperature decreased, the increase in material temperature moderated, resulting in a difference of 27 K in the last forging stage, between the conditions of 1023 and 1073 K. This would reduce the temperature difference effect on microstructure formation during β-processed forging.https://www.mdpi.com/2504-4494/6/2/47titanium alloyhot forgingβ processingdeformation heatingtemperaturephase transformation |
| spellingShingle | Tomonori Kitashima Lingjian Meng Deformation Heating and Temperature Changes in a Near-β Titanium Alloy during β-Processed Forging Journal of Manufacturing and Materials Processing titanium alloy hot forging β processing deformation heating temperature phase transformation |
| title | Deformation Heating and Temperature Changes in a Near-β Titanium Alloy during β-Processed Forging |
| title_full | Deformation Heating and Temperature Changes in a Near-β Titanium Alloy during β-Processed Forging |
| title_fullStr | Deformation Heating and Temperature Changes in a Near-β Titanium Alloy during β-Processed Forging |
| title_full_unstemmed | Deformation Heating and Temperature Changes in a Near-β Titanium Alloy during β-Processed Forging |
| title_short | Deformation Heating and Temperature Changes in a Near-β Titanium Alloy during β-Processed Forging |
| title_sort | deformation heating and temperature changes in a near β titanium alloy during β processed forging |
| topic | titanium alloy hot forging β processing deformation heating temperature phase transformation |
| url | https://www.mdpi.com/2504-4494/6/2/47 |
| work_keys_str_mv | AT tomonorikitashima deformationheatingandtemperaturechangesinanearbtitaniumalloyduringbprocessedforging AT lingjianmeng deformationheatingandtemperaturechangesinanearbtitaniumalloyduringbprocessedforging |