Experimental investigation on uniaxial cyclic plasticity of cast AZ91 magnesium alloy
The uniaxial cyclic plasticity of cast AZ91 magnesium (Mg) alloy was investigated by conducting a series of cyclic straining and stressing tests at room temperature, and a unique cyclic plasticity (especially for ratchetting) and its physical nature were revealed. The experimental results demonstrat...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-09-01
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| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956722000020 |
| _version_ | 1797630626544746496 |
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| author | Yu Lei Ziyi Wang Guozheng Kang |
| author_facet | Yu Lei Ziyi Wang Guozheng Kang |
| author_sort | Yu Lei |
| collection | DOAJ |
| description | The uniaxial cyclic plasticity of cast AZ91 magnesium (Mg) alloy was investigated by conducting a series of cyclic straining and stressing tests at room temperature, and a unique cyclic plasticity (especially for ratchetting) and its physical nature were revealed. The experimental results demonstrate that the cast AZ91 Mg alloy behaviors tension-compression symmetry, because the dislocation slipping and twinning occur during both the tensile and compressive deformations; although the cast AZ91 alloy presents a certain pseudo-elastic behavior during unloading due to the detwinning, there is no obvious S-shaped asymmetric hysteresis loop like that of wrought Mg alloy in the cyclic tensile-compressive tests, and an obvious cyclic hardening is observed; moreover, the ratchetting of the cast AZ91 alloy presented in the cyclic stressing tests depends remarkably on the prescribed mean stress and stress amplitude, but slightly changes with the stress rate, and the evolution of responding peak/valley strain greatly differs from that of wrought Mg alloys and stainless steels. This work provides rich experimental data for establishing the constitutive model of cast Mg alloys. |
| first_indexed | 2024-03-11T11:10:50Z |
| format | Article |
| id | doaj.art-ab7349f3f8ab44398c544ca8479534c6 |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-03-11T11:10:50Z |
| publishDate | 2023-09-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-ab7349f3f8ab44398c544ca8479534c62023-11-12T04:39:58ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672023-09-0111932553271Experimental investigation on uniaxial cyclic plasticity of cast AZ91 magnesium alloyYu Lei0Ziyi Wang1Guozheng Kang2Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaApplied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaCorrespondent author.; Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaThe uniaxial cyclic plasticity of cast AZ91 magnesium (Mg) alloy was investigated by conducting a series of cyclic straining and stressing tests at room temperature, and a unique cyclic plasticity (especially for ratchetting) and its physical nature were revealed. The experimental results demonstrate that the cast AZ91 Mg alloy behaviors tension-compression symmetry, because the dislocation slipping and twinning occur during both the tensile and compressive deformations; although the cast AZ91 alloy presents a certain pseudo-elastic behavior during unloading due to the detwinning, there is no obvious S-shaped asymmetric hysteresis loop like that of wrought Mg alloy in the cyclic tensile-compressive tests, and an obvious cyclic hardening is observed; moreover, the ratchetting of the cast AZ91 alloy presented in the cyclic stressing tests depends remarkably on the prescribed mean stress and stress amplitude, but slightly changes with the stress rate, and the evolution of responding peak/valley strain greatly differs from that of wrought Mg alloys and stainless steels. This work provides rich experimental data for establishing the constitutive model of cast Mg alloys.http://www.sciencedirect.com/science/article/pii/S2213956722000020Cast magnesium alloyRatchettingTwinning/detwinningStress levelStress rate |
| spellingShingle | Yu Lei Ziyi Wang Guozheng Kang Experimental investigation on uniaxial cyclic plasticity of cast AZ91 magnesium alloy Journal of Magnesium and Alloys Cast magnesium alloy Ratchetting Twinning/detwinning Stress level Stress rate |
| title | Experimental investigation on uniaxial cyclic plasticity of cast AZ91 magnesium alloy |
| title_full | Experimental investigation on uniaxial cyclic plasticity of cast AZ91 magnesium alloy |
| title_fullStr | Experimental investigation on uniaxial cyclic plasticity of cast AZ91 magnesium alloy |
| title_full_unstemmed | Experimental investigation on uniaxial cyclic plasticity of cast AZ91 magnesium alloy |
| title_short | Experimental investigation on uniaxial cyclic plasticity of cast AZ91 magnesium alloy |
| title_sort | experimental investigation on uniaxial cyclic plasticity of cast az91 magnesium alloy |
| topic | Cast magnesium alloy Ratchetting Twinning/detwinning Stress level Stress rate |
| url | http://www.sciencedirect.com/science/article/pii/S2213956722000020 |
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