Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106748
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | en_US |
dc.creator | Shen, J | en_US |
dc.creator | Zhao, Z | en_US |
dc.creator | Yao, Z | en_US |
dc.creator | Ning, Y | en_US |
dc.creator | Xiong, Y | en_US |
dc.creator | Fu, MW | en_US |
dc.date.accessioned | 2024-06-03T02:24:10Z | - |
dc.date.available | 2024-06-03T02:24:10Z | - |
dc.identifier.issn | 1059-9495 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/106748 | - |
dc.language.iso | en | en_US |
dc.publisher | Springer | en_US |
dc.rights | © ASM International | en_US |
dc.rights | This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use(https://www.springernature.com/gp/open-research/policies/accepted-manuscript-terms), but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1007/s11665-018-3618-x. | en_US |
dc.subject | Dynamic recrystallization | en_US |
dc.subject | Dynamical recovery | en_US |
dc.subject | Hot deformation | en_US |
dc.subject | Physical-based model | en_US |
dc.subject | TiAl alloy | en_US |
dc.title | A two-stage physical-based model for predicting flow stress of as-cast tial alloy under hot deformation conditions | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 5384 | en_US |
dc.identifier.epage | 5394 | en_US |
dc.identifier.volume | 27 | en_US |
dc.identifier.issue | 10 | en_US |
dc.identifier.doi | 10.1007/s11665-018-3618-x | en_US |
dcterms.abstract | The hot deformation behavior of Ti-30Al-4.2Mn-4.5Nb-0.2B alloy was investigated using the isothermal compression experiment at temperatures of 1020-1200 °C and strain rates of 0.001-1 s−1. The flow stress was sensitive to the deformation parameters like temperature and strain rate, which decreases with the increase in temperature and decrease in strain rates. Based on the true stress-true strain data, a two-stage physical-based model was proposed to describe the flow stress curve of as-cast TiAl alloy during hot deformation process. For establishing the model, at first, the flow curves of dynamic recovery (DRV) were modeled by employing stress-dislocation relation and adjusting dislocation annihilation coefficient Ω. Then, the flow curves of dynamic recrystallization (DRX) were modeled by considering the dynamic softening behavior into Avrami equation. Finally, the flow curves in the entire deformation stages could be described by embedding the predicted data of DRV model (i.e., flow stress before the critical strain) into the predicted data by DRX model (i.e., flow stress after the critical strain). The critical strain for initiation of DRX was determined by the double-differentiation method. To evaluate the applicability and effectiveness of DRX kinetics equation, the DRX curves were calculated and were consistent with the microstructure observation. Comparison between the experimental and predicted data shows that the proposed physical-based model can well forecast the flow stress under a wide working domain. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Journal of materials engineering and performance, Oct. 2018, v. 27, no. 10, p. 5384-5394 | en_US |
dcterms.isPartOf | Journal of materials engineering and performance | en_US |
dcterms.issued | 2018-10 | - |
dc.identifier.scopus | 2-s2.0-85052928747 | - |
dc.identifier.eissn | 1544-1024 | en_US |
dc.description.validate | 202405 bcwh | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ME-0586 | - |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | Fundamental Research Funds for the Central Universities; National Natural Science Foundation of Shannxi Province; National Natural Science Foundation of China | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 16752445 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Fu_Two-Stage_Physical-Based_Model.pdf | Pre-Published version | 7.93 MB | Adobe PDF | View/Open |
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