In-Situ SEM Study on Deformation and Failure Mechanism of TC4 Titanium Alloy by Laser Additive Manufacturing
The in-situ tensile test of the field emission scanning electron microscope was used to study the deformation mechanism of the TC4 titanium alloy manufactured by laser additive manufacturing along the L direction (grain growth direction) and T direction (perpendicular to the grain growth direction)....
| Format: | Article |
|---|---|
| Language: | zho |
| Published: |
EDP Sciences
2020-10-01
|
| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2020/05/jnwpu2020385p1025/jnwpu2020385p1025.html |
| _version_ | 1797426797247201280 |
|---|---|
| collection | DOAJ |
| description | The in-situ tensile test of the field emission scanning electron microscope was used to study the deformation mechanism of the TC4 titanium alloy manufactured by laser additive manufacturing along the L direction (grain growth direction) and T direction (perpendicular to the grain growth direction). The test results show that during the tensile process, as deposited specimen mainly cracks along the interfaces of α and β which is 45 ° to the tensile direction. With the increase of load, the cracking increases. The surface of the sample fluctuates until breaks. There is no obvious change in the prior β grain boundary in L direction. The microcracks along grain boundaries were observed in T direction, which is consistent with the result that the plasticity in the T direction is less than that in L direction. After heat treatment, due to the increase of α lath width compared with the as-deposition, slip bands were observed in α phase. However, a large number of slip bands appear on the equiaxed α phase of the forged specimen. |
| first_indexed | 2024-03-09T08:36:06Z |
| format | Article |
| id | doaj.art-8e617b5b61a1468d81b7138c930dd030 |
| institution | Directory Open Access Journal |
| issn | 1000-2758 2609-7125 |
| language | zho |
| last_indexed | 2024-03-09T08:36:06Z |
| publishDate | 2020-10-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj.art-8e617b5b61a1468d81b7138c930dd0302023-12-02T18:21:42ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252020-10-013851025102910.1051/jnwpu/20203851025jnwpu2020385p1025In-Situ SEM Study on Deformation and Failure Mechanism of TC4 Titanium Alloy by Laser Additive Manufacturing012School of Aeronautics, Northwestern Polytechnical UniversitySchool of Aeronautics, Northwestern Polytechnical UniversitySchool of Aeronautics, Northwestern Polytechnical UniversityThe in-situ tensile test of the field emission scanning electron microscope was used to study the deformation mechanism of the TC4 titanium alloy manufactured by laser additive manufacturing along the L direction (grain growth direction) and T direction (perpendicular to the grain growth direction). The test results show that during the tensile process, as deposited specimen mainly cracks along the interfaces of α and β which is 45 ° to the tensile direction. With the increase of load, the cracking increases. The surface of the sample fluctuates until breaks. There is no obvious change in the prior β grain boundary in L direction. The microcracks along grain boundaries were observed in T direction, which is consistent with the result that the plasticity in the T direction is less than that in L direction. After heat treatment, due to the increase of α lath width compared with the as-deposition, slip bands were observed in α phase. However, a large number of slip bands appear on the equiaxed α phase of the forged specimen.https://www.jnwpu.org/articles/jnwpu/full_html/2020/05/jnwpu2020385p1025/jnwpu2020385p1025.htmladditive manufacturingtitanium alloyin-situ tension testdeformation mechanism |
| spellingShingle | In-Situ SEM Study on Deformation and Failure Mechanism of TC4 Titanium Alloy by Laser Additive Manufacturing Xibei Gongye Daxue Xuebao additive manufacturing titanium alloy in-situ tension test deformation mechanism |
| title | In-Situ SEM Study on Deformation and Failure Mechanism of TC4 Titanium Alloy by Laser Additive Manufacturing |
| title_full | In-Situ SEM Study on Deformation and Failure Mechanism of TC4 Titanium Alloy by Laser Additive Manufacturing |
| title_fullStr | In-Situ SEM Study on Deformation and Failure Mechanism of TC4 Titanium Alloy by Laser Additive Manufacturing |
| title_full_unstemmed | In-Situ SEM Study on Deformation and Failure Mechanism of TC4 Titanium Alloy by Laser Additive Manufacturing |
| title_short | In-Situ SEM Study on Deformation and Failure Mechanism of TC4 Titanium Alloy by Laser Additive Manufacturing |
| title_sort | in situ sem study on deformation and failure mechanism of tc4 titanium alloy by laser additive manufacturing |
| topic | additive manufacturing titanium alloy in-situ tension test deformation mechanism |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2020/05/jnwpu2020385p1025/jnwpu2020385p1025.html |