Tailoring bimodal grain structure of Mg-9Al-1Zn alloy for strength-ductility synergy: Co-regulating effect from coarse Al2Y and submicron Mg17Al12 particles
Grain boundary strengthening is an effective strategy for increasing mechanical properties of Mg alloys. However, this method offers limited strengthening in bimodal grain-structured Mg alloys due to the difficultly in increasing the volume fraction of fine grains while keeping a small grain size. H...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2021-09-01
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| Series: | Journal of Magnesium and Alloys |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956721000335 |
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| author | Yong-Kang Li Min Zha Hai-Long Jia Si-Qing Wang Hong-Min Zhang Xiao Ma Teng Tian Pin-Kui Ma Hui-Yuan Wang |
| author_facet | Yong-Kang Li Min Zha Hai-Long Jia Si-Qing Wang Hong-Min Zhang Xiao Ma Teng Tian Pin-Kui Ma Hui-Yuan Wang |
| author_sort | Yong-Kang Li |
| collection | DOAJ |
| description | Grain boundary strengthening is an effective strategy for increasing mechanical properties of Mg alloys. However, this method offers limited strengthening in bimodal grain-structured Mg alloys due to the difficultly in increasing the volume fraction of fine grains while keeping a small grain size. Herein, we show that the volume fraction of fine grains (FGs, ∼2.5 µm) in the bimodal grain structure can be tailored from ∼30 vol.% in Mg-9Al-1 Zn (AZ91) to ∼52 vol.% in AZ91–1Y (wt.%) processed by hard plate rolling (HPR). Moreover, a superior combination of a high ultimate tensile strength (∼405 MPa) and decent uniform elongation (∼9%) is achieved in present AZ91–1Y alloy. It reveals that a desired bimodal grain structure can be tailored by the co-regulating effect from coarse Al2Y particles resulting in inhomogeneous recrystallization, and dispersed submicron Mg17Al12 particles depressing the growth of recrystallized grains. The findings offer a valuable insight in tailoring bimodal grain-structured Mg alloys for optimized strength and ductility. |
| first_indexed | 2024-04-24T08:44:23Z |
| format | Article |
| id | doaj.art-7eb733fd39c246bfa39326ec316a8433 |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-04-24T08:44:23Z |
| publishDate | 2021-09-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-7eb733fd39c246bfa39326ec316a84332024-04-16T13:55:23ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672021-09-019515561566Tailoring bimodal grain structure of Mg-9Al-1Zn alloy for strength-ductility synergy: Co-regulating effect from coarse Al2Y and submicron Mg17Al12 particlesYong-Kang Li0Min Zha1Hai-Long Jia2Si-Qing Wang3Hong-Min Zhang4Xiao Ma5Teng Tian6Pin-Kui Ma7Hui-Yuan Wang8State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China; Key Laboratory of Automobile Materials of Ministry of Education and School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, ChinaState Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China; Key Laboratory of Automobile Materials of Ministry of Education and School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China; International Center of Future Science, Jilin University, Changchun 130012, China; Corresponding authors at: Key Laboratory of Automobile Materials of Ministry of Education and School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China.State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China; International Center of Future Science, Jilin University, Changchun 130012, ChinaKey Laboratory of Automobile Materials of Ministry of Education and School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, ChinaKey Laboratory of Automobile Materials of Ministry of Education and School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, ChinaKey Laboratory of Automobile Materials of Ministry of Education and School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, ChinaKey Laboratory of Automobile Materials of Ministry of Education and School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, ChinaKey Laboratory of Automobile Materials of Ministry of Education and School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China; International Center of Future Science, Jilin University, Changchun 130012, ChinaState Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China; Key Laboratory of Automobile Materials of Ministry of Education and School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China; International Center of Future Science, Jilin University, Changchun 130012, China; Corresponding authors at: Key Laboratory of Automobile Materials of Ministry of Education and School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China.Grain boundary strengthening is an effective strategy for increasing mechanical properties of Mg alloys. However, this method offers limited strengthening in bimodal grain-structured Mg alloys due to the difficultly in increasing the volume fraction of fine grains while keeping a small grain size. Herein, we show that the volume fraction of fine grains (FGs, ∼2.5 µm) in the bimodal grain structure can be tailored from ∼30 vol.% in Mg-9Al-1 Zn (AZ91) to ∼52 vol.% in AZ91–1Y (wt.%) processed by hard plate rolling (HPR). Moreover, a superior combination of a high ultimate tensile strength (∼405 MPa) and decent uniform elongation (∼9%) is achieved in present AZ91–1Y alloy. It reveals that a desired bimodal grain structure can be tailored by the co-regulating effect from coarse Al2Y particles resulting in inhomogeneous recrystallization, and dispersed submicron Mg17Al12 particles depressing the growth of recrystallized grains. The findings offer a valuable insight in tailoring bimodal grain-structured Mg alloys for optimized strength and ductility.http://www.sciencedirect.com/science/article/pii/S2213956721000335Magnesium alloysBimodal grain structureSecond-phase particlesRecrystallizationStrengthDuctility |
| spellingShingle | Yong-Kang Li Min Zha Hai-Long Jia Si-Qing Wang Hong-Min Zhang Xiao Ma Teng Tian Pin-Kui Ma Hui-Yuan Wang Tailoring bimodal grain structure of Mg-9Al-1Zn alloy for strength-ductility synergy: Co-regulating effect from coarse Al2Y and submicron Mg17Al12 particles Journal of Magnesium and Alloys Magnesium alloys Bimodal grain structure Second-phase particles Recrystallization Strength Ductility |
| title | Tailoring bimodal grain structure of Mg-9Al-1Zn alloy for strength-ductility synergy: Co-regulating effect from coarse Al2Y and submicron Mg17Al12 particles |
| title_full | Tailoring bimodal grain structure of Mg-9Al-1Zn alloy for strength-ductility synergy: Co-regulating effect from coarse Al2Y and submicron Mg17Al12 particles |
| title_fullStr | Tailoring bimodal grain structure of Mg-9Al-1Zn alloy for strength-ductility synergy: Co-regulating effect from coarse Al2Y and submicron Mg17Al12 particles |
| title_full_unstemmed | Tailoring bimodal grain structure of Mg-9Al-1Zn alloy for strength-ductility synergy: Co-regulating effect from coarse Al2Y and submicron Mg17Al12 particles |
| title_short | Tailoring bimodal grain structure of Mg-9Al-1Zn alloy for strength-ductility synergy: Co-regulating effect from coarse Al2Y and submicron Mg17Al12 particles |
| title_sort | tailoring bimodal grain structure of mg 9al 1zn alloy for strength ductility synergy co regulating effect from coarse al2y and submicron mg17al12 particles |
| topic | Magnesium alloys Bimodal grain structure Second-phase particles Recrystallization Strength Ductility |
| url | http://www.sciencedirect.com/science/article/pii/S2213956721000335 |
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