The Effect of Different Annealing Temperatures on Recrystallization Microstructure and Texture of Clock-Rolled Tantalum Plates with Strong Texture Gradient
The texture and the bulk stored energy along the thickness direction were extremely inhomogeneous in the clock-rolled tantalum sheets with 70% reduction. Therefore, the effects of different annealing temperatures on the microstructure and texture distribution of tantalum plates through the thickness...
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| Format: | Article |
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MDPI AG
2019-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/9/3/358 |
| _version_ | 1818420990423597056 |
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| author | Jialin Zhu Shifeng Liu Shuai Yang Yu Zhang Jing Zhang Chenghang Zhang Chao Deng |
| author_facet | Jialin Zhu Shifeng Liu Shuai Yang Yu Zhang Jing Zhang Chenghang Zhang Chao Deng |
| author_sort | Jialin Zhu |
| collection | DOAJ |
| description | The texture and the bulk stored energy along the thickness direction were extremely inhomogeneous in the clock-rolled tantalum sheets with 70% reduction. Therefore, the effects of different annealing temperatures on the microstructure and texture distribution of tantalum plates through the thickness were investigated by X-ray diffraction (XRD) and electron backscatter diffraction (EBSD). The results showed that the occurrence of strong {111} recrystallization texture in the center layer can be attributed to the subgrains nucleation mechanism when annealed at the low temperature. Many subgrains with {111} orientation appeared in the center layer, due to its high stored energy and preferential nucleation sites of the {111} deformed matrix, and rapidly grew into the effective nucleus, resulting in the large {111} grain size and strong {111} texture after complete recrystallization. Contrarily, at the high temperature, high-angle grain boundaries had sufficient driving force to generate migration, due to the lack of recovery, and the growth time of recrystallized nucleus was much shorter, contributing to relatively uniform recrystallization microstructure and texture distribution along the thickness. |
| first_indexed | 2024-12-14T13:03:14Z |
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| id | doaj.art-351d2b685c2d4011852cc4778b095c93 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-14T13:03:14Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-351d2b685c2d4011852cc4778b095c932022-12-21T23:00:23ZengMDPI AGMetals2075-47012019-03-019335810.3390/met9030358met9030358The Effect of Different Annealing Temperatures on Recrystallization Microstructure and Texture of Clock-Rolled Tantalum Plates with Strong Texture GradientJialin Zhu0Shifeng Liu1Shuai Yang2Yu Zhang3Jing Zhang4Chenghang Zhang5Chao Deng6College of Materials Science and Engineering, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaThe texture and the bulk stored energy along the thickness direction were extremely inhomogeneous in the clock-rolled tantalum sheets with 70% reduction. Therefore, the effects of different annealing temperatures on the microstructure and texture distribution of tantalum plates through the thickness were investigated by X-ray diffraction (XRD) and electron backscatter diffraction (EBSD). The results showed that the occurrence of strong {111} recrystallization texture in the center layer can be attributed to the subgrains nucleation mechanism when annealed at the low temperature. Many subgrains with {111} orientation appeared in the center layer, due to its high stored energy and preferential nucleation sites of the {111} deformed matrix, and rapidly grew into the effective nucleus, resulting in the large {111} grain size and strong {111} texture after complete recrystallization. Contrarily, at the high temperature, high-angle grain boundaries had sufficient driving force to generate migration, due to the lack of recovery, and the growth time of recrystallized nucleus was much shorter, contributing to relatively uniform recrystallization microstructure and texture distribution along the thickness.https://www.mdpi.com/2075-4701/9/3/358high purity tantalumannealing temperaturetexturestored energymicrostructure |
| spellingShingle | Jialin Zhu Shifeng Liu Shuai Yang Yu Zhang Jing Zhang Chenghang Zhang Chao Deng The Effect of Different Annealing Temperatures on Recrystallization Microstructure and Texture of Clock-Rolled Tantalum Plates with Strong Texture Gradient Metals high purity tantalum annealing temperature texture stored energy microstructure |
| title | The Effect of Different Annealing Temperatures on Recrystallization Microstructure and Texture of Clock-Rolled Tantalum Plates with Strong Texture Gradient |
| title_full | The Effect of Different Annealing Temperatures on Recrystallization Microstructure and Texture of Clock-Rolled Tantalum Plates with Strong Texture Gradient |
| title_fullStr | The Effect of Different Annealing Temperatures on Recrystallization Microstructure and Texture of Clock-Rolled Tantalum Plates with Strong Texture Gradient |
| title_full_unstemmed | The Effect of Different Annealing Temperatures on Recrystallization Microstructure and Texture of Clock-Rolled Tantalum Plates with Strong Texture Gradient |
| title_short | The Effect of Different Annealing Temperatures on Recrystallization Microstructure and Texture of Clock-Rolled Tantalum Plates with Strong Texture Gradient |
| title_sort | effect of different annealing temperatures on recrystallization microstructure and texture of clock rolled tantalum plates with strong texture gradient |
| topic | high purity tantalum annealing temperature texture stored energy microstructure |
| url | https://www.mdpi.com/2075-4701/9/3/358 |
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