Modeling of Flow Stress of 2026 Al Alloy under Hot Compression
In order to investigate the workability and to optimize the hot forming parameters for 2026 Al alloy, hot compression tests were performed in the temperature range of 350~450°C with strain rates of 0.01~10 s−1 and 60% deformation degree on a Gleeble-1500 thermosimulation machine. The true stress-str...
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Wiley
2016-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/3803472 |
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| author | Zheng-bing Xiao Yuan-chun Huang Yu Liu |
| author_facet | Zheng-bing Xiao Yuan-chun Huang Yu Liu |
| author_sort | Zheng-bing Xiao |
| collection | DOAJ |
| description | In order to investigate the workability and to optimize the hot forming parameters for 2026 Al alloy, hot compression tests were performed in the temperature range of 350~450°C with strain rates of 0.01~10 s−1 and 60% deformation degree on a Gleeble-1500 thermosimulation machine. The true stress-strain curves obtained exhibit that the stress increases dramatically at small strains and then moves forward to a steady state, showing dynamic flow softening. Meanwhile, on the basis of Arrhenius equation, a constitutive equation on the flow stress, temperature, and strain rate was proposed. Yet, the values of the predicated stress from the equation and the true stress differ by as much as 50.10%. Given the intricate impact of precipitation of the second phases on the strength of 2026 Al alloy, the introduction of a revised equation with the reinforcement of temperature was carried out, fitting well with the experiment data at peak stresses. What is more, both pictures obtained by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were compatible with all the inferences. |
| format | Article |
| id | doaj-art-aa919fb6d69f4ea99382ba1587a9fc3c |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-aa919fb6d69f4ea99382ba1587a9fc3c2025-08-20T02:20:52ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422016-01-01201610.1155/2016/38034723803472Modeling of Flow Stress of 2026 Al Alloy under Hot CompressionZheng-bing Xiao0Yuan-chun Huang1Yu Liu2School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaSchool of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaLight Alloy Research Institute, Central South University, Changsha 410012, ChinaIn order to investigate the workability and to optimize the hot forming parameters for 2026 Al alloy, hot compression tests were performed in the temperature range of 350~450°C with strain rates of 0.01~10 s−1 and 60% deformation degree on a Gleeble-1500 thermosimulation machine. The true stress-strain curves obtained exhibit that the stress increases dramatically at small strains and then moves forward to a steady state, showing dynamic flow softening. Meanwhile, on the basis of Arrhenius equation, a constitutive equation on the flow stress, temperature, and strain rate was proposed. Yet, the values of the predicated stress from the equation and the true stress differ by as much as 50.10%. Given the intricate impact of precipitation of the second phases on the strength of 2026 Al alloy, the introduction of a revised equation with the reinforcement of temperature was carried out, fitting well with the experiment data at peak stresses. What is more, both pictures obtained by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were compatible with all the inferences.http://dx.doi.org/10.1155/2016/3803472 |
| spellingShingle | Zheng-bing Xiao Yuan-chun Huang Yu Liu Modeling of Flow Stress of 2026 Al Alloy under Hot Compression Advances in Materials Science and Engineering |
| title | Modeling of Flow Stress of 2026 Al Alloy under Hot Compression |
| title_full | Modeling of Flow Stress of 2026 Al Alloy under Hot Compression |
| title_fullStr | Modeling of Flow Stress of 2026 Al Alloy under Hot Compression |
| title_full_unstemmed | Modeling of Flow Stress of 2026 Al Alloy under Hot Compression |
| title_short | Modeling of Flow Stress of 2026 Al Alloy under Hot Compression |
| title_sort | modeling of flow stress of 2026 al alloy under hot compression |
| url | http://dx.doi.org/10.1155/2016/3803472 |
| work_keys_str_mv | AT zhengbingxiao modelingofflowstressof2026alalloyunderhotcompression AT yuanchunhuang modelingofflowstressof2026alalloyunderhotcompression AT yuliu modelingofflowstressof2026alalloyunderhotcompression |