Anisotropic strain hardening in an extruded lean Mg-Al-Ca-Mn alloy
Compared to commercial magnesium (Mg) alloys, recently the low-alloyed Mg alloys have attracted extensive research interest for their advantages in formability, corrosion resistance, and low cost. However, their strain hardening behavior is yet fully understood. In this work, the strain hardening of...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127524001424 |
| _version_ | 1797256414028103680 |
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| author | Ming-Yu Li Zhi-Ping Guan Peng Chen Ming-Wen Ren Gang Wang Wei Yan Po Zhao Jia-Wang Song |
| author_facet | Ming-Yu Li Zhi-Ping Guan Peng Chen Ming-Wen Ren Gang Wang Wei Yan Po Zhao Jia-Wang Song |
| author_sort | Ming-Yu Li |
| collection | DOAJ |
| description | Compared to commercial magnesium (Mg) alloys, recently the low-alloyed Mg alloys have attracted extensive research interest for their advantages in formability, corrosion resistance, and low cost. However, their strain hardening behavior is yet fully understood. In this work, the strain hardening of an extruded lean Mg-Al-Ca-Mn alloy is qualitatively and quantitatively analyzed. As compared to the dislocation-dominated deformation along the extrusion direction (ED), the hardening along the transverse direction (TD) is significantly improved due to the activation of twinning. We quantified the specific contributions of twinning and dislocations to the net hardening effect through cyclic stress relaxation and calculations. Interestingly, the dominant hardening mechanism is always related to dislocations, even though the twin volume faction reaches ∼40 %. This work furthers our understanding of the deformation behavior of lean Mg alloys and indicates that the strain hardening of Mg alloys can be improved if the twin morphology is properly controlled. |
| first_indexed | 2024-03-07T23:24:46Z |
| format | Article |
| id | doaj.art-62adcf677f2343b88629ce7ef737c688 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-24T22:21:22Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-62adcf677f2343b88629ce7ef737c6882024-03-20T06:08:18ZengElsevierMaterials & Design0264-12752024-03-01239112770Anisotropic strain hardening in an extruded lean Mg-Al-Ca-Mn alloyMing-Yu Li0Zhi-Ping Guan1Peng Chen2Ming-Wen Ren3Gang Wang4Wei Yan5Po Zhao6Jia-Wang Song7Key Laboratory of Automobile Materials Ministry of Education & School of Materials Science and Engineering, Jilin University, Changchun 130022, ChinaKey Laboratory of Automobile Materials Ministry of Education & School of Materials Science and Engineering, Jilin University, Changchun 130022, China; Corresponding authors.Key Laboratory of Automobile Materials Ministry of Education & School of Materials Science and Engineering, Jilin University, Changchun 130022, China; Corresponding authors.Key Laboratory of Automobile Materials Ministry of Education & School of Materials Science and Engineering, Jilin University, Changchun 130022, ChinaFAW Tooling Die Manufacturing Co, Ltd, Changchun 130000, Jilin, ChinaFAW Tooling Die Manufacturing Co, Ltd, Changchun 130000, Jilin, ChinaKey Laboratory of Automobile Materials Ministry of Education & School of Materials Science and Engineering, Jilin University, Changchun 130022, ChinaKey Laboratory of Automobile Materials Ministry of Education & School of Materials Science and Engineering, Jilin University, Changchun 130022, ChinaCompared to commercial magnesium (Mg) alloys, recently the low-alloyed Mg alloys have attracted extensive research interest for their advantages in formability, corrosion resistance, and low cost. However, their strain hardening behavior is yet fully understood. In this work, the strain hardening of an extruded lean Mg-Al-Ca-Mn alloy is qualitatively and quantitatively analyzed. As compared to the dislocation-dominated deformation along the extrusion direction (ED), the hardening along the transverse direction (TD) is significantly improved due to the activation of twinning. We quantified the specific contributions of twinning and dislocations to the net hardening effect through cyclic stress relaxation and calculations. Interestingly, the dominant hardening mechanism is always related to dislocations, even though the twin volume faction reaches ∼40 %. This work furthers our understanding of the deformation behavior of lean Mg alloys and indicates that the strain hardening of Mg alloys can be improved if the twin morphology is properly controlled.http://www.sciencedirect.com/science/article/pii/S0264127524001424Mg alloyTwinningStrain hardening |
| spellingShingle | Ming-Yu Li Zhi-Ping Guan Peng Chen Ming-Wen Ren Gang Wang Wei Yan Po Zhao Jia-Wang Song Anisotropic strain hardening in an extruded lean Mg-Al-Ca-Mn alloy Materials & Design Mg alloy Twinning Strain hardening |
| title | Anisotropic strain hardening in an extruded lean Mg-Al-Ca-Mn alloy |
| title_full | Anisotropic strain hardening in an extruded lean Mg-Al-Ca-Mn alloy |
| title_fullStr | Anisotropic strain hardening in an extruded lean Mg-Al-Ca-Mn alloy |
| title_full_unstemmed | Anisotropic strain hardening in an extruded lean Mg-Al-Ca-Mn alloy |
| title_short | Anisotropic strain hardening in an extruded lean Mg-Al-Ca-Mn alloy |
| title_sort | anisotropic strain hardening in an extruded lean mg al ca mn alloy |
| topic | Mg alloy Twinning Strain hardening |
| url | http://www.sciencedirect.com/science/article/pii/S0264127524001424 |
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