Heat treatment and anisotropy of TB6 titanium alloy fabricated by laser deposition manufacturing
The effects of different heat treatment processes on the anisotropy of TB6 titanium alloy fabricated by laser deposition manufacturing were investigated.The evolution of microstructure was analyzed by using optical microscope （OM）， scanning electron microscope （SEM）， and transmission electron micros...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2025-03-01
|
| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2022.000273 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849702716167684096 |
|---|---|
| author | LI Changfu QIAN Xin YANG Guang REN Yuhang WANG Xiangming |
| author_facet | LI Changfu QIAN Xin YANG Guang REN Yuhang WANG Xiangming |
| author_sort | LI Changfu |
| collection | DOAJ |
| description | The effects of different heat treatment processes on the anisotropy of TB6 titanium alloy fabricated by laser deposition manufacturing were investigated.The evolution of microstructure was analyzed by using optical microscope （OM）， scanning electron microscope （SEM）， and transmission electron microscope （TEM）. The variation trend and influence mechanism of anisotropy with heat treatment were investigated. The present research shows that the original β grains and the morphology of the primary α phase （αp phase） are greatly affected by the thermal gradient. The original β grains in the microstructure of TB6 titanium alloy fabricated by laser deposition manufacturing are elongated along the deposition direction and are ellipsoidal. In addition， the relative slender αp phase parallel to the deposition direction is found. These two factors jointly lead to the anisotropy of room temperature tensile property of the as-deposited samples. The tensile strength in the vertical deposition direction （X-direction ） is 7.3% higher， the yield strength is 5% higher， and the elongation is 32.4% lower than that in the deposition direction （Z-direction）. The low-temperature annealing treatment has little effect on microstructure， only the anisotropy of plasticity is decreased. After high-temperature annealing treatment， the difference in aspect ratio of αp phase is significantly reduced， leading to the anisotropy of the room temperature tensile property decreases. The strength are still higher in the X-direction ， and the elongation is higher in the Z-direction. The strengthening mechanism of the solution-aging treating sample is completely changed due to the precipitation of the secondary α phase （αs phase）. In addition， there is no obvious preferential growth of αs phase after heat treatment， so the anisotropy of the room temperature tensile property tends to be eliminated as the strength increases. |
| format | Article |
| id | doaj-art-2a43e668173243feaa6defaaa0593963 |
| institution | DOAJ |
| issn | 1001-4381 |
| language | zho |
| publishDate | 2025-03-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj-art-2a43e668173243feaa6defaaa05939632025-08-20T03:17:32ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812025-03-0153316917710.11868/j.issn.1001-4381.2022.0002731001-4381（2025）03-0169-09Heat treatment and anisotropy of TB6 titanium alloy fabricated by laser deposition manufacturingLI Changfu0QIAN Xin1YANG Guang2REN Yuhang3WANG Xiangming4Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process，Shenyang Aerospace University， Shenyang 110136，ChinaKey Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process，Shenyang Aerospace University， Shenyang 110136，ChinaKey Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process，Shenyang Aerospace University， Shenyang 110136，ChinaKey Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process，Shenyang Aerospace University， Shenyang 110136，ChinaShenyang Institute of Aircraft Design， China Aviation Industry Group Corporation， Shenyang 110135，ChinaThe effects of different heat treatment processes on the anisotropy of TB6 titanium alloy fabricated by laser deposition manufacturing were investigated.The evolution of microstructure was analyzed by using optical microscope （OM）， scanning electron microscope （SEM）， and transmission electron microscope （TEM）. The variation trend and influence mechanism of anisotropy with heat treatment were investigated. The present research shows that the original β grains and the morphology of the primary α phase （αp phase） are greatly affected by the thermal gradient. The original β grains in the microstructure of TB6 titanium alloy fabricated by laser deposition manufacturing are elongated along the deposition direction and are ellipsoidal. In addition， the relative slender αp phase parallel to the deposition direction is found. These two factors jointly lead to the anisotropy of room temperature tensile property of the as-deposited samples. The tensile strength in the vertical deposition direction （X-direction ） is 7.3% higher， the yield strength is 5% higher， and the elongation is 32.4% lower than that in the deposition direction （Z-direction）. The low-temperature annealing treatment has little effect on microstructure， only the anisotropy of plasticity is decreased. After high-temperature annealing treatment， the difference in aspect ratio of αp phase is significantly reduced， leading to the anisotropy of the room temperature tensile property decreases. The strength are still higher in the X-direction ， and the elongation is higher in the Z-direction. The strengthening mechanism of the solution-aging treating sample is completely changed due to the precipitation of the secondary α phase （αs phase）. In addition， there is no obvious preferential growth of αs phase after heat treatment， so the anisotropy of the room temperature tensile property tends to be eliminated as the strength increases.https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2022.000273laser additive manufacturingtb6 titanium alloyheat treatmentmicrostructureanisotropy |
| spellingShingle | LI Changfu QIAN Xin YANG Guang REN Yuhang WANG Xiangming Heat treatment and anisotropy of TB6 titanium alloy fabricated by laser deposition manufacturing Cailiao gongcheng laser additive manufacturing tb6 titanium alloy heat treatment microstructure anisotropy |
| title | Heat treatment and anisotropy of TB6 titanium alloy fabricated by laser deposition manufacturing |
| title_full | Heat treatment and anisotropy of TB6 titanium alloy fabricated by laser deposition manufacturing |
| title_fullStr | Heat treatment and anisotropy of TB6 titanium alloy fabricated by laser deposition manufacturing |
| title_full_unstemmed | Heat treatment and anisotropy of TB6 titanium alloy fabricated by laser deposition manufacturing |
| title_short | Heat treatment and anisotropy of TB6 titanium alloy fabricated by laser deposition manufacturing |
| title_sort | heat treatment and anisotropy of tb6 titanium alloy fabricated by laser deposition manufacturing |
| topic | laser additive manufacturing tb6 titanium alloy heat treatment microstructure anisotropy |
| url | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2022.000273 |
| work_keys_str_mv | AT lichangfu heattreatmentandanisotropyoftb6titaniumalloyfabricatedbylaserdepositionmanufacturing AT qianxin heattreatmentandanisotropyoftb6titaniumalloyfabricatedbylaserdepositionmanufacturing AT yangguang heattreatmentandanisotropyoftb6titaniumalloyfabricatedbylaserdepositionmanufacturing AT renyuhang heattreatmentandanisotropyoftb6titaniumalloyfabricatedbylaserdepositionmanufacturing AT wangxiangming heattreatmentandanisotropyoftb6titaniumalloyfabricatedbylaserdepositionmanufacturing |