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Article: Microstructural evolution during hot shear deformation of an extruded fine-grained Mg-Gd-Y-Zr alloy
Title | Microstructural evolution during hot shear deformation of an extruded fine-grained Mg-Gd-Y-Zr alloy |
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Authors | |
Keywords | Textural evolution Extrusion direction Shear strain rate Deformation area Shear punch testing |
Issue Date | 2017 |
Publisher | Springer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0022-2461 |
Citation | Journal of Materials Science, 2017, v. 52 n. 13, p. 7843-7857 How to Cite? |
Abstract | Mg–Gd–Y–Zr alloys are among recently developed Mg alloys having superior mechanical properties at elevated temperatures. Dynamic recrystallization (DRX) and rare earth-rich particles play important roles in enhancing the high-temperature strength of these alloys. Accordingly, the microstructural evolution of a fine-grained extruded Mg–5Gd–4Y–0.4Zr alloy was investigated after hot shear deformation in the temperature range of 350–450 °C using the shear punch testing (SPT) method. The results reveal the occurrence of partial dynamic recrystallization at the grain boundaries at 350 °C while the fraction of DRX grains increases with increasing deformation temperature. A fully recrystallized microstructure was achieved after SPT at 450 °C. The Gd-rich and Y-rich cuboid particles, having typical sizes in the range of ~50 nm to ~3 μm, show excellent stability and compatibility after hot shear deformation, and these particles enhance the high-temperature strength during hot deformation at elevated temperatures. The textural evolution, examined using electron backscattered diffraction, revealed a non-fibrous basal DRX texture after SPT which is different from the conventional deformation texture. |
Persistent Identifier | http://hdl.handle.net/10722/260473 |
ISSN | 2023 Impact Factor: 3.5 2023 SCImago Journal Rankings: 0.781 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Alizadeh, R | - |
dc.contributor.author | Mahmudi, R | - |
dc.contributor.author | Ngan, AHW | - |
dc.contributor.author | Langdon, TG | - |
dc.date.accessioned | 2018-09-14T08:42:19Z | - |
dc.date.available | 2018-09-14T08:42:19Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Journal of Materials Science, 2017, v. 52 n. 13, p. 7843-7857 | - |
dc.identifier.issn | 0022-2461 | - |
dc.identifier.uri | http://hdl.handle.net/10722/260473 | - |
dc.description.abstract | Mg–Gd–Y–Zr alloys are among recently developed Mg alloys having superior mechanical properties at elevated temperatures. Dynamic recrystallization (DRX) and rare earth-rich particles play important roles in enhancing the high-temperature strength of these alloys. Accordingly, the microstructural evolution of a fine-grained extruded Mg–5Gd–4Y–0.4Zr alloy was investigated after hot shear deformation in the temperature range of 350–450 °C using the shear punch testing (SPT) method. The results reveal the occurrence of partial dynamic recrystallization at the grain boundaries at 350 °C while the fraction of DRX grains increases with increasing deformation temperature. A fully recrystallized microstructure was achieved after SPT at 450 °C. The Gd-rich and Y-rich cuboid particles, having typical sizes in the range of ~50 nm to ~3 μm, show excellent stability and compatibility after hot shear deformation, and these particles enhance the high-temperature strength during hot deformation at elevated temperatures. The textural evolution, examined using electron backscattered diffraction, revealed a non-fibrous basal DRX texture after SPT which is different from the conventional deformation texture. | - |
dc.language | eng | - |
dc.publisher | Springer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0022-2461 | - |
dc.relation.ispartof | Journal of Materials Science | - |
dc.rights | The final publication is available at Springer via http://dx.doi.org/10.1007/s10853-017-1031-8 | - |
dc.subject | Textural evolution | - |
dc.subject | Extrusion direction | - |
dc.subject | Shear strain rate | - |
dc.subject | Deformation area | - |
dc.subject | Shear punch testing | - |
dc.title | Microstructural evolution during hot shear deformation of an extruded fine-grained Mg-Gd-Y-Zr alloy | - |
dc.type | Article | - |
dc.identifier.email | Ngan, AHW: hwngan@hku.hk | - |
dc.identifier.authority | Ngan, AHW=rp00225 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1007/s10853-017-1031-8 | - |
dc.identifier.scopus | eid_2-s2.0-85016414575 | - |
dc.identifier.hkuros | 289999 | - |
dc.identifier.volume | 52 | - |
dc.identifier.issue | 13 | - |
dc.identifier.spage | 7843 | - |
dc.identifier.epage | 7857 | - |
dc.identifier.isi | WOS:000399422000019 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0022-2461 | - |