Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy
An accurate prediction of high speed impact behavior of metals by considering the combined effects of strain, strain rate and temperature is essential for understanding dynamic impact deformation of metals. To understand the effect of strain, strain rate and temperature on the high-speed impact beha...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ab7070 |
| _version_ | 1827868891368390656 |
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| author | Jinhui Wang Xiaoguang Yuan Peipeng Jin Hongbin Ma Bo Shi Hongshan Zheng Tengyu Chen Wenchao Xia |
| author_facet | Jinhui Wang Xiaoguang Yuan Peipeng Jin Hongbin Ma Bo Shi Hongshan Zheng Tengyu Chen Wenchao Xia |
| author_sort | Jinhui Wang |
| collection | DOAJ |
| description | An accurate prediction of high speed impact behavior of metals by considering the combined effects of strain, strain rate and temperature is essential for understanding dynamic impact deformation of metals. To understand the effect of strain, strain rate and temperature on the high-speed impact behavior of Mg-1Al-4Y alloy, the dynamic impact compression experiments for Mg-1Al-4Y alloy were carried out by split Hopkinson pressure bar (SHPB). The mechanical properties of Mg-1Al-4Y alloy specimens were studied at different strain rate and temperature. The number of {10–12} extension twins decreases with the strain rate increasing from the electron backscatter diffraction (EBSD) technology, because of the formation of extension twins is suppressed with the strain rate increases, and dislocations become the main mode of dominant deformation. It is also found that the increase of strain rate has a positive effect on the strength of the material. But, the temperatures have a negative impact on the strength of the material. A modified Johnson-cook model has been presented, which shows good predictions with experimental results at different strain rates and temperatures. Especially, the predictions of the Johnson-cook equation are completely consistent with experimental results in small deformation stage. |
| first_indexed | 2024-03-12T15:38:49Z |
| format | Article |
| id | doaj.art-f7d4005038174030a62da4478e5be38d |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:38:49Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-f7d4005038174030a62da4478e5be38d2023-08-09T16:07:28ZengIOP PublishingMaterials Research Express2053-15912020-01-017202652210.1088/2053-1591/ab7070Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloyJinhui Wang0https://orcid.org/0000-0003-3658-360XXiaoguang Yuan1Peipeng Jin2Hongbin Ma3Bo Shi4Hongshan Zheng5Tengyu Chen6Wenchao Xia7School of Material Science and Engineering, Shenyang University of Technology , Shenyang 110870, People’s Republic of ChinaSchool of Material Science and Engineering, Shenyang University of Technology , Shenyang 110870, People’s Republic of ChinaSchool of Material Science and Engineering, Shenyang University of Technology , Shenyang 110870, People’s Republic of China; Qinghai 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 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 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 ChinaAn accurate prediction of high speed impact behavior of metals by considering the combined effects of strain, strain rate and temperature is essential for understanding dynamic impact deformation of metals. To understand the effect of strain, strain rate and temperature on the high-speed impact behavior of Mg-1Al-4Y alloy, the dynamic impact compression experiments for Mg-1Al-4Y alloy were carried out by split Hopkinson pressure bar (SHPB). The mechanical properties of Mg-1Al-4Y alloy specimens were studied at different strain rate and temperature. The number of {10–12} extension twins decreases with the strain rate increasing from the electron backscatter diffraction (EBSD) technology, because of the formation of extension twins is suppressed with the strain rate increases, and dislocations become the main mode of dominant deformation. It is also found that the increase of strain rate has a positive effect on the strength of the material. But, the temperatures have a negative impact on the strength of the material. A modified Johnson-cook model has been presented, which shows good predictions with experimental results at different strain rates and temperatures. Especially, the predictions of the Johnson-cook equation are completely consistent with experimental results in small deformation stage.https://doi.org/10.1088/2053-1591/ab7070high-speed impactstrain rateextension twinsJohnson-cook equation. |
| spellingShingle | Jinhui Wang Xiaoguang Yuan Peipeng Jin Hongbin Ma Bo Shi Hongshan Zheng Tengyu Chen Wenchao Xia Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy Materials Research Express high-speed impact strain rate extension twins Johnson-cook equation. |
| title | Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy |
| title_full | Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy |
| title_fullStr | Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy |
| title_full_unstemmed | Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy |
| title_short | Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy |
| title_sort | study on modified johnson cook constitutive material model to predict the dynamic behavior mg 1al 4y alloy |
| topic | high-speed impact strain rate extension twins Johnson-cook equation. |
| url | https://doi.org/10.1088/2053-1591/ab7070 |
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