Hot tensile deformation behavior and microstructure evolution of Mg-1Al-6Y alloy
In this study, the hot tensile test was carried out using the extruded and annealed Mg-1Al-6Y alloy. The effect of temperature and strain rate on the hot tensile deformation behavior of the alloy was systematically studied at different temperatures (200 °C ∼ 350 °C) and different strain rates (8 × 1...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ac34b6 |
| _version_ | 1797746764811337728 |
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| author | Shuai Yuan Jinhui Wang Peipeng Jin Lei Zhang |
| author_facet | Shuai Yuan Jinhui Wang Peipeng Jin Lei Zhang |
| author_sort | Shuai Yuan |
| collection | DOAJ |
| description | In this study, the hot tensile test was carried out using the extruded and annealed Mg-1Al-6Y alloy. The effect of temperature and strain rate on the hot tensile deformation behavior of the alloy was systematically studied at different temperatures (200 °C ∼ 350 °C) and different strain rates (8 × 10 ^−5 s ^−1 ∼ 1.6 × 10 ^−3 s ^−1 ). In addition, the effect of temperature on the evolution of microstructure when the strain rate is 1.6 × 10 ^−3 s ^−1 was investigated. The results showed that as the temperature increased or the strain rate decreased, the peak stress decreased and the elongation increased. Hot tensile at different temperatures all increased the texture intensity, and the microstructure after deformation showed obvious characteristics of basal fiber texture ([0001]⊥ED). Correspondingly, the weaker [−15–40]//ED texture before deformation transformed into a stronger [01–10]//ED fiber texture. After deformation, the average Schmid factor (SF) of each non-basal slip was significantly increased compared with the average SF before deformation, indicating that abundant non-basal slip was activated during the deformation. When the deformation temperature was 300 °C, dynamic recrystallization (DRX) occurred significantly, and the DRXed grains accounted for 15.9%. DRX was a combination of continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX). Furthermore, the calculated activation energy of the alloy was about 98.8 kJ mol ^−1 . Comprehensive research showed that the hot tensile deformation mechanism mainly included intragranular slip, grain boundary slip (GBS) and DRX. |
| first_indexed | 2024-03-12T15:41:32Z |
| format | Article |
| id | doaj.art-c1d76944ce09445a897232a111d7deed |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:41:32Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-c1d76944ce09445a897232a111d7deed2023-08-09T15:58:09ZengIOP PublishingMaterials Research Express2053-15912021-01-0181111650610.1088/2053-1591/ac34b6Hot tensile deformation behavior and microstructure evolution of Mg-1Al-6Y alloyShuai Yuan0Jinhui Wang1https://orcid.org/0000-0003-3658-360XPeipeng Jin2Lei Zhang3Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University . Xining 810016, People’s Republic of ChinaQinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University . Xining 810016, People’s Republic of China; School of Material Science and Engineering, Shenyang University of Technology , Shenyang, 110870, People’s Republic of ChinaQinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University . Xining 810016, People’s Republic of ChinaQinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University . Xining 810016, People’s Republic of ChinaIn this study, the hot tensile test was carried out using the extruded and annealed Mg-1Al-6Y alloy. The effect of temperature and strain rate on the hot tensile deformation behavior of the alloy was systematically studied at different temperatures (200 °C ∼ 350 °C) and different strain rates (8 × 10 ^−5 s ^−1 ∼ 1.6 × 10 ^−3 s ^−1 ). In addition, the effect of temperature on the evolution of microstructure when the strain rate is 1.6 × 10 ^−3 s ^−1 was investigated. The results showed that as the temperature increased or the strain rate decreased, the peak stress decreased and the elongation increased. Hot tensile at different temperatures all increased the texture intensity, and the microstructure after deformation showed obvious characteristics of basal fiber texture ([0001]⊥ED). Correspondingly, the weaker [−15–40]//ED texture before deformation transformed into a stronger [01–10]//ED fiber texture. After deformation, the average Schmid factor (SF) of each non-basal slip was significantly increased compared with the average SF before deformation, indicating that abundant non-basal slip was activated during the deformation. When the deformation temperature was 300 °C, dynamic recrystallization (DRX) occurred significantly, and the DRXed grains accounted for 15.9%. DRX was a combination of continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX). Furthermore, the calculated activation energy of the alloy was about 98.8 kJ mol ^−1 . Comprehensive research showed that the hot tensile deformation mechanism mainly included intragranular slip, grain boundary slip (GBS) and DRX.https://doi.org/10.1088/2053-1591/ac34b6hot tensiledeformation behaviormicrostructure evolutiondynamic recrystallization |
| spellingShingle | Shuai Yuan Jinhui Wang Peipeng Jin Lei Zhang Hot tensile deformation behavior and microstructure evolution of Mg-1Al-6Y alloy Materials Research Express hot tensile deformation behavior microstructure evolution dynamic recrystallization |
| title | Hot tensile deformation behavior and microstructure evolution of Mg-1Al-6Y alloy |
| title_full | Hot tensile deformation behavior and microstructure evolution of Mg-1Al-6Y alloy |
| title_fullStr | Hot tensile deformation behavior and microstructure evolution of Mg-1Al-6Y alloy |
| title_full_unstemmed | Hot tensile deformation behavior and microstructure evolution of Mg-1Al-6Y alloy |
| title_short | Hot tensile deformation behavior and microstructure evolution of Mg-1Al-6Y alloy |
| title_sort | hot tensile deformation behavior and microstructure evolution of mg 1al 6y alloy |
| topic | hot tensile deformation behavior microstructure evolution dynamic recrystallization |
| url | https://doi.org/10.1088/2053-1591/ac34b6 |
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