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Hot Compression Mechanism and Comparative Study on Constitutive Models of Mo-3 vol%Al2O3 Alloys
| Title: | Hot Compression Mechanism and Comparative Study on Constitutive Models of Mo-3 vol%Al2O3 Alloys |
| Authors: | Yao, Liying Browse this author | | Gao, Yimin Browse this author | | Xu, Liujie Browse this author |
| Keywords: | Mo-3 vol.%Al2O3 alloy | | Hot compression deformation | | Deformation mechanism | | Constitutive model |
| Issue Date: | 3-Aug-2020 |
| Publisher: | Springer |
| Journal Title: | Metals and Materials International |
| Volume: | 27 |
| Issue: | 12 |
| Start Page: | 5335 |
| End Page: | 5345 |
| Publisher DOI: | 10.1007/s12540-020-00831-5 |
| Abstract: | The hot compression tests for Mo-3 vol.%Al2O3 alloys were conducted on a Gleeble-1500D thermo-mechanical simulator in the temperatures range of 1000-1300 degrees C and strain rates range of 0.005-1 s(-1). The hot deformation behavior, mechanism associated with microstructure evolution of Mo-3 vol.%Al2O3 alloys was investigated by electron backscattering diffraction analysis. Three types of stress-strain curves were analyzed by quantifying the work hardening rate. The deformation mechanism at 1000-1300 degrees C mainly included the plastic deformation of Mo-3 vol.%Al2O3 alloy, as well as the dynamic recovery and recrystallization of Mo matrix. The modified Arrhenius, Modified Johnson-Cook and modified Zerilli-Armstrong constitutive equations were established and evaluated by the correlation coefficient (R-c) and average absolute relative error ((e) over bar). The flow stress of Mo-3 vol.%Al2O3 alloys could be well predicted by those three constitutive models, but modified Arrhenius constitutive model had a higher predicated accuracy. |
| Rights: | This is a post-peer-review, pre-copyedit version of an article published in Metals and Materials International . The final authenticated version is available online at: http://dx.doi.org/10.1007/s12540-020-00831-5 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/82599 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: Yao Liying
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