Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106764
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | en_US |
dc.creator | Ning, YQ | en_US |
dc.creator | Xie, BC | en_US |
dc.creator | Zhou, C | en_US |
dc.creator | Liang, HQ | en_US |
dc.creator | Fu, MW | en_US |
dc.date.accessioned | 2024-06-03T02:24:15Z | - |
dc.date.available | 2024-06-03T02:24:15Z | - |
dc.identifier.issn | 1598-9623 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/106764 | - |
dc.language.iso | en | en_US |
dc.publisher | Korean Institute of Metals and Materials | en_US |
dc.rights | © KIM and Springer | 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/s12540-017-6313-9. | en_US |
dc.subject | Alloys | en_US |
dc.subject | Deformation | en_US |
dc.subject | Image analysis | en_US |
dc.subject | Recrystallization | en_US |
dc.subject | Strain-rate sensitivity | en_US |
dc.title | Strain-rate sensitivity of powder metallurgy superalloys associated with steady-state DRX during hot compression process | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 350 | en_US |
dc.identifier.epage | 358 | en_US |
dc.identifier.volume | 23 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.doi | 10.1007/s12540-017-6313-9 | en_US |
dcterms.abstract | Strain-rate sensitivity (SRS) is an important parameter to describe the thermodynamic behavior in plastic deformation process. In this research, the variation of SRS associated with steady-state DRX in P/M superalloys was quantitatively investigated. Based on the theoretical analysis and microstructural observation of the alloy after deformation, the SRS coefficient was employed to identify the deformation mechanism of the alloy. Meanwhile, the corresponding relationship between SRS coefficient m, stress exponent n and deformation mechanism was revealed. The stress exponent n in the Arrhenius constitutive model of P/M superalloys was calculated. In addition, it is found there is a relatively stable stress exponent range (n = 4-6), indicating that dislocation evolution played as the major hot deformation mechanism for P/M FGH4096 superalloy. Furthermore, the Bergstrom model and Senkov model were used and combined together to estimate the SRS coefficient in the steady-state DRX and the m value maintains at 0.2-0.22, which are consistent with the microstructural evolution during hot deformation process. The SRS coefficient distribution map and power dissipation efficiency distribution map were finally constructed associated with the microstructural evolution during hot deformation, which can be used to optimize the processing parameters of the superalloys. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Metals and materials international, Mar. 2017, v. 23, no. 2, p. 350-358 | en_US |
dcterms.isPartOf | Metals and materials international | en_US |
dcterms.issued | 2017-03 | - |
dc.identifier.scopus | 2-s2.0-85014845057 | - |
dc.identifier.eissn | 2005-4149 | en_US |
dc.description.validate | 202405 bcwh | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ME-0827 | - |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Natural Science Foundation of China; Fundamental Research Funds for the Central Universities; Natural Science Foundation of Shaanxi Province; Hong Kong Scholar Program | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 6729438 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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Fu_Strain-Rate_Sensitivity_Powder.pdf | Pre-Published version | 2.06 MB | Adobe PDF | View/Open |
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