Gradient-Structured AZ31 Magnesium Alloy: Enhanced Room-Temperature Stretch Formability and Associated Deformation Mechanisms.
Saved in:
| Title: | Gradient-Structured AZ31 Magnesium Alloy: Enhanced Room-Temperature Stretch Formability and Associated Deformation Mechanisms. |
|---|---|
| Authors: | Hua, Zihuan1,2 (AUTHOR), He, Chao2,3 (AUTHOR), Liu, Lintao1,3 (AUTHOR), Wang, Zhihan1,2,4 (AUTHOR), Bai, Shengwen1,2 (AUTHOR), Li, Meng1,2,4 (AUTHOR), Jiang, Bin1,2,3 (AUTHOR) |
| Source: | Materials (1996-1944). Apr2026, Vol. 19 Issue 8, p1566. 16p. |
| Subjects: | Magnesium alloys, Extrusion process, Materials testing, Twin boundaries, Deformations (Mechanics) |
| Abstract: | In this study, a gradientstructured (GS) AZ31 Mg alloy sheet with high stretch formability is fabricated using turned bearing extrusion (TBE). The mechanism by which the gradient structure contributes to the improvement in formability is elucidated. The Erichsen index of the GS sheet reaches 5.51 mm, representing an increase of up to 89.3% compared to conventional extruded (CE) sheets. During the Erichsen cupping test, when the coarsegrained (CG) layer of the GS sheet is positioned on the inner side, the large grains promote the activation of deformation twins, thereby effectively enhancing the strain accommodation capacity in the thickness direction. Meanwhile, the finegrained (FG) outer layer effectively suppresses the formation of {10 1 - 1} and {10 1 - 1}-{10 1 - 2} twins, reducing local strain concentration. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | In this study, a gradientstructured (GS) AZ31 Mg alloy sheet with high stretch formability is fabricated using turned bearing extrusion (TBE). The mechanism by which the gradient structure contributes to the improvement in formability is elucidated. The Erichsen index of the GS sheet reaches 5.51 mm, representing an increase of up to 89.3% compared to conventional extruded (CE) sheets. During the Erichsen cupping test, when the coarsegrained (CG) layer of the GS sheet is positioned on the inner side, the large grains promote the activation of deformation twins, thereby effectively enhancing the strain accommodation capacity in the thickness direction. Meanwhile, the finegrained (FG) outer layer effectively suppresses the formation of {10 1 - 1} and {10 1 - 1}-{10 1 - 2} twins, reducing local strain concentration. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 19961944 |
| DOI: | 10.3390/ma19081566 |
