The Portevin-Le Chatelier effect and strain-rate-induced plasticity enhancement in Mg-4Li and Mg-4Li-1Al alloys
The effects of strain rate on deformation behavior of the Mg-4Li and Mg-4Li-1Al alloys were investigated through tension testing and microstructure analysis. The Portevin-Le Chatelier effect was detected in tension testing of Mg-4Li alloy in the strain rate range of 5 × 10 ^–4 s ^−1 ∼ 1 × 10 ^–2...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ac4f85 |
| _version_ | 1827869065442492416 |
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| author | Guiying Sha Teng Liu Miao Yin Yuduo Na |
| author_facet | Guiying Sha Teng Liu Miao Yin Yuduo Na |
| author_sort | Guiying Sha |
| collection | DOAJ |
| description | The effects of strain rate on deformation behavior of the Mg-4Li and Mg-4Li-1Al alloys were investigated through tension testing and microstructure analysis. The Portevin-Le Chatelier effect was detected in tension testing of Mg-4Li alloy in the strain rate range of 5 × 10 ^–4 s ^−1 ∼ 1 × 10 ^–2 s ^−1 , and the effect was enhanced by the addition of 1% Al. The mechanism of Portevin-Le Chatelier effect was ascribed to the interaction between primary dislocations and pre-existing secondary forest dislocations. The strain rate sensitivity indexes of both Mg-4Li and Mg-4Li-1Al alloys were found as negative. With increasing strain rate, the yield strength and tensile strength of both alloys decreased, while the elongation increased. |
| first_indexed | 2024-03-12T15:39:43Z |
| format | Article |
| id | doaj.art-ec0cc48208844d239132ec18d80fe103 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:39:43Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-ec0cc48208844d239132ec18d80fe1032023-08-09T16:03:15ZengIOP PublishingMaterials Research Express2053-15912022-01-019303651410.1088/2053-1591/ac4f85The Portevin-Le Chatelier effect and strain-rate-induced plasticity enhancement in Mg-4Li and Mg-4Li-1Al alloysGuiying Sha0Teng Liu1https://orcid.org/0000-0003-1794-4895Miao Yin2Yuduo Na3School of Materials and Engineering, Shenyang Aerospace University , Shenyang 110136, People’s Republic of ChinaSchool of Materials and Engineering, Shenyang Aerospace University , Shenyang 110136, People’s Republic of ChinaSchool of Materials and Engineering, Shenyang Aerospace University , Shenyang 110136, People’s Republic of ChinaSchool of Materials and Engineering, Shenyang Aerospace University , Shenyang 110136, People’s Republic of ChinaThe effects of strain rate on deformation behavior of the Mg-4Li and Mg-4Li-1Al alloys were investigated through tension testing and microstructure analysis. The Portevin-Le Chatelier effect was detected in tension testing of Mg-4Li alloy in the strain rate range of 5 × 10 ^–4 s ^−1 ∼ 1 × 10 ^–2 s ^−1 , and the effect was enhanced by the addition of 1% Al. The mechanism of Portevin-Le Chatelier effect was ascribed to the interaction between primary dislocations and pre-existing secondary forest dislocations. The strain rate sensitivity indexes of both Mg-4Li and Mg-4Li-1Al alloys were found as negative. With increasing strain rate, the yield strength and tensile strength of both alloys decreased, while the elongation increased.https://doi.org/10.1088/2053-1591/ac4f85Mg-Li alloyportevin-Le Chatelier effectstrain rateplasticity enhancement |
| spellingShingle | Guiying Sha Teng Liu Miao Yin Yuduo Na The Portevin-Le Chatelier effect and strain-rate-induced plasticity enhancement in Mg-4Li and Mg-4Li-1Al alloys Materials Research Express Mg-Li alloy portevin-Le Chatelier effect strain rate plasticity enhancement |
| title | The Portevin-Le Chatelier effect and strain-rate-induced plasticity enhancement in Mg-4Li and Mg-4Li-1Al alloys |
| title_full | The Portevin-Le Chatelier effect and strain-rate-induced plasticity enhancement in Mg-4Li and Mg-4Li-1Al alloys |
| title_fullStr | The Portevin-Le Chatelier effect and strain-rate-induced plasticity enhancement in Mg-4Li and Mg-4Li-1Al alloys |
| title_full_unstemmed | The Portevin-Le Chatelier effect and strain-rate-induced plasticity enhancement in Mg-4Li and Mg-4Li-1Al alloys |
| title_short | The Portevin-Le Chatelier effect and strain-rate-induced plasticity enhancement in Mg-4Li and Mg-4Li-1Al alloys |
| title_sort | portevin le chatelier effect and strain rate induced plasticity enhancement in mg 4li and mg 4li 1al alloys |
| topic | Mg-Li alloy portevin-Le Chatelier effect strain rate plasticity enhancement |
| url | https://doi.org/10.1088/2053-1591/ac4f85 |
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