Realizing impressive superplasticity in a low-alloyed Mg-Zn-Ca-Al-Mn alloy: The roles of grain boundary segregation and dense β-Mn particles
Achieving impressive superplasticity is an important strategy to manufacture Mg alloy products with complex shapes. In the present study, we report that an excellent superplastic deformation with elongation larger than 500% can be achieved at 623 K and 1.0 × 10−3 s−1 in a Mg-1.51Zn-0.59Ca-0.59Al-0.7...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2024-10-01
|
| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956723001421 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850225066406576128 |
|---|---|
| author | Tian-Shuai Wang Zhen-Ming Hua Cheng Wang Min Zha Yipeng Gao Hui-Yuan Wang |
| author_facet | Tian-Shuai Wang Zhen-Ming Hua Cheng Wang Min Zha Yipeng Gao Hui-Yuan Wang |
| author_sort | Tian-Shuai Wang |
| collection | DOAJ |
| description | Achieving impressive superplasticity is an important strategy to manufacture Mg alloy products with complex shapes. In the present study, we report that an excellent superplastic deformation with elongation larger than 500% can be achieved at 623 K and 1.0 × 10−3 s−1 in a Mg-1.51Zn-0.59Ca-0.59Al-0.70Mn (wt.%, ZXAM2111) alloy fabricated by equal-channel angular pressing. The superplastic deformation is mainly carried by grain boundary sliding (GBS), accompanied by a grain size growth from ∼3.0 µm to ∼6.0 µm after deformation. Before deformation, the ZXAM2111 alloy is mainly characterized by a strong co-segregation of Zn and Ca atoms at grain boundaries and uniformly distributed β-Mn particles. With deformation proceeding, the β-Mn particles further dynamically precipitate along grain boundaries that parallel the tensile axis, leading to improved resistance to grain coarsening. Although the enhanced stabilizing effects decrease the strain rate sensitivity value, the resulting impressive microstructure stability provides a cornerstone of the active operation of GBS, facilitating the achievement of superplastic deformation. The present work could provide insight into developing low-alloyed Mg alloys with high microstructure thermal stability to achieve superplasticity. |
| format | Article |
| id | doaj-art-bd40f3bd9f194ea1be730dbbc03614e1 |
| institution | OA Journals |
| issn | 2213-9567 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj-art-bd40f3bd9f194ea1be730dbbc03614e12025-08-20T02:05:28ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672024-10-0112104085409510.1016/j.jma.2023.05.014Realizing impressive superplasticity in a low-alloyed Mg-Zn-Ca-Al-Mn alloy: The roles of grain boundary segregation and dense β-Mn particlesTian-Shuai Wang0Zhen-Ming Hua1Cheng Wang2Min Zha3Yipeng Gao4Hui-Yuan Wang5Key Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, PR ChinaKey Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, PR China; International Center of Future Science, Jilin University, Changchun 130012, PR China; Corresponding authors.Key Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, PR ChinaKey Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, PR China; International Center of Future Science, Jilin University, Changchun 130012, PR ChinaKey Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, PR China; International Center of Future Science, Jilin University, Changchun 130012, PR ChinaKey Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, PR China; International Center of Future Science, Jilin University, Changchun 130012, PR China; State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China; Corresponding authors.Achieving impressive superplasticity is an important strategy to manufacture Mg alloy products with complex shapes. In the present study, we report that an excellent superplastic deformation with elongation larger than 500% can be achieved at 623 K and 1.0 × 10−3 s−1 in a Mg-1.51Zn-0.59Ca-0.59Al-0.70Mn (wt.%, ZXAM2111) alloy fabricated by equal-channel angular pressing. The superplastic deformation is mainly carried by grain boundary sliding (GBS), accompanied by a grain size growth from ∼3.0 µm to ∼6.0 µm after deformation. Before deformation, the ZXAM2111 alloy is mainly characterized by a strong co-segregation of Zn and Ca atoms at grain boundaries and uniformly distributed β-Mn particles. With deformation proceeding, the β-Mn particles further dynamically precipitate along grain boundaries that parallel the tensile axis, leading to improved resistance to grain coarsening. Although the enhanced stabilizing effects decrease the strain rate sensitivity value, the resulting impressive microstructure stability provides a cornerstone of the active operation of GBS, facilitating the achievement of superplastic deformation. The present work could provide insight into developing low-alloyed Mg alloys with high microstructure thermal stability to achieve superplasticity.http://www.sciencedirect.com/science/article/pii/S2213956723001421Magnesium alloysSuperplasticitySolute segregationThermal stabilityGrain boundary sliding |
| spellingShingle | Tian-Shuai Wang Zhen-Ming Hua Cheng Wang Min Zha Yipeng Gao Hui-Yuan Wang Realizing impressive superplasticity in a low-alloyed Mg-Zn-Ca-Al-Mn alloy: The roles of grain boundary segregation and dense β-Mn particles Journal of Magnesium and Alloys Magnesium alloys Superplasticity Solute segregation Thermal stability Grain boundary sliding |
| title | Realizing impressive superplasticity in a low-alloyed Mg-Zn-Ca-Al-Mn alloy: The roles of grain boundary segregation and dense β-Mn particles |
| title_full | Realizing impressive superplasticity in a low-alloyed Mg-Zn-Ca-Al-Mn alloy: The roles of grain boundary segregation and dense β-Mn particles |
| title_fullStr | Realizing impressive superplasticity in a low-alloyed Mg-Zn-Ca-Al-Mn alloy: The roles of grain boundary segregation and dense β-Mn particles |
| title_full_unstemmed | Realizing impressive superplasticity in a low-alloyed Mg-Zn-Ca-Al-Mn alloy: The roles of grain boundary segregation and dense β-Mn particles |
| title_short | Realizing impressive superplasticity in a low-alloyed Mg-Zn-Ca-Al-Mn alloy: The roles of grain boundary segregation and dense β-Mn particles |
| title_sort | realizing impressive superplasticity in a low alloyed mg zn ca al mn alloy the roles of grain boundary segregation and dense β mn particles |
| topic | Magnesium alloys Superplasticity Solute segregation Thermal stability Grain boundary sliding |
| url | http://www.sciencedirect.com/science/article/pii/S2213956723001421 |
| work_keys_str_mv | AT tianshuaiwang realizingimpressivesuperplasticityinalowalloyedmgzncaalmnalloytherolesofgrainboundarysegregationanddensebmnparticles AT zhenminghua realizingimpressivesuperplasticityinalowalloyedmgzncaalmnalloytherolesofgrainboundarysegregationanddensebmnparticles AT chengwang realizingimpressivesuperplasticityinalowalloyedmgzncaalmnalloytherolesofgrainboundarysegregationanddensebmnparticles AT minzha realizingimpressivesuperplasticityinalowalloyedmgzncaalmnalloytherolesofgrainboundarysegregationanddensebmnparticles AT yipenggao realizingimpressivesuperplasticityinalowalloyedmgzncaalmnalloytherolesofgrainboundarysegregationanddensebmnparticles AT huiyuanwang realizingimpressivesuperplasticityinalowalloyedmgzncaalmnalloytherolesofgrainboundarysegregationanddensebmnparticles |