| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Department of Mechanical Engineering | en_US |
| dc.creator | Yang, M | en_US |
| dc.creator | King, DJM | en_US |
| dc.creator | Postugar, I | en_US |
| dc.creator | Wen, Y | en_US |
| dc.creator | Luan, J | en_US |
| dc.creator | Kuhn, B | en_US |
| dc.creator | Jiao, Z | en_US |
| dc.creator | Wang, C | en_US |
| dc.creator | Wenman, MR | en_US |
| dc.creator | Liu, X | en_US |
| dc.date.accessioned | 2021-06-16T06:36:06Z | - |
| dc.date.available | 2021-06-16T06:36:06Z | - |
| dc.identifier.issn | 1359-6454 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10397/90341 | - |
| dc.language.iso | en | en_US |
| dc.publisher | Pergamon Press | en_US |
| dc.subject | Aging hardening | en_US |
| dc.subject | Atom probe tomography | en_US |
| dc.subject | Ferritic stainless steel | en_US |
| dc.subject | G-phase | en_US |
| dc.subject | Nano-precipitation | en_US |
| dc.title | Precipitation behavior in G-phase strengthened ferritic stainless steels | en_US |
| dc.type | Journal/Magazine Article | en_US |
| dc.identifier.volume | 205 | en_US |
| dc.identifier.doi | 10.1016/j.actamat.2020.116542 | en_US |
| dcterms.abstract | A series of G-phase strengthened ferritic stainless steels Fe-20Cr-3Ni-3Si-X (X = 2Mn, 1Mn-2Ti, 1Mn-2Nb and 1Mn-2Ta) are characterized after aging using experimental (microhardness, TEM and APT) and theoretical (DFT) techniques. The results indicate that the Ni16Mn6Si7 G-phase shows sluggish precipitation during aging treatment. This was attributed to the small difference in the enthalpy of formation between the Ni16Mn6Si7 G- and BCC phase and the requirement of high Ni:Fe ratio. A superfine Ni16Ti6Si7 G-phase was found to precipitate as a core accompanied with an “envelope” of Fe2TiSi-L21 Heusler phase during early aging (≤24 h) in the Ti containing alloy. This morphology is predicted to occur due to early Ni clustering in ferrite and a negative Ni concentration gradient away from the cluster that favors Fe2TiSi formation. The G-phases show only particle coarsening without obvious chemical composition evolution for further aging up to 96 h. A prominent hardness increase of 100-275 HV was also observed during aging. These findings provide valuable insight into methods for precipitating low lattice mismatch silicide phases for the development of future high strength steels. | en_US |
| dcterms.accessRights | embargoed access | en_US |
| dcterms.bibliographicCitation | Acta materialia, 15 Feb. 2021, v. 205, 116542 | en_US |
| dcterms.isPartOf | Acta materialia | en_US |
| dcterms.issued | 2021-02-15 | - |
| dc.identifier.scopus | 2-s2.0-85097710689 | - |
| dc.identifier.artn | 116542 | en_US |
| dc.description.validate | 202106 bcwh | en_US |
| dc.description.oa | Not applicable | en_US |
| dc.identifier.FolderNumber | a0935-n04 | - |
| dc.identifier.SubFormID | 2175 | - |
| dc.description.fundingSource | Others | en_US |
| dc.description.fundingText | P0020370 | en_US |
| dc.description.pubStatus | Published | en_US |
| dc.date.embargo | 2023.02.15 | en_US |
| Appears in Collections: | Journal/Magazine Article | |
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