Enhanced strength and ductility of Mg–Gd–Y–Zr alloys by secondary extrusion

Li, X.; Qi, Wenjuan; Zheng, Kan; Zhou, Nan

doi:10.1016/j.jma.2013.02.006

Cited by 92 publications

(33 citation statements)

References 35 publications

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“…Extruded Mg-Gd-Y alloys have been reported to exhibit a very high strength combined with moderate ductility: Mg-12Gd-3Y-0.6Zr (wt.%) achieving an ultimate tensile strength (UTS) of 446 MPa and a tensile elongation (EL) of 10.2% [2], and Mg-10Gd-5.66Y-1.62Zn-0.65Zr (wt.%) having a 542 MPa UTS and 8.0% EL [3]. However, such performance requires the addition of large amounts of rare-earth elements (RE) (4 10 wt.%), with the associated increase in cost presenting a major obstacle to their commercial application.…”

Section: Introductionmentioning

confidence: 99%

A new high-strength extruded Mg-8Al-4Sn-2Zn alloy

et al. 2015

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Section: Introductionmentioning

confidence: 99%

A new high-strength extruded Mg-8Al-4Sn-2Zn alloy

et al. 2015

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“…It has been reported [5,6] that Mg alloys illustrated better formability, higher strength and thermal stability with the addition of rare-earth (RE) elements. Mg-Gd-Y-Zr system is a good example and is gathering increasing attentions because of its attractive mechanical properties [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Annealing behavior of a cast Mg-Gd-Y-Zr alloy with necklace fine grains developed under hot deformation

Yang

Xiao

et al. 2017

Materials Science and Engineering: A

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The microstructure and texture development of a cast Mg-Gd-Y-Zr alloy during hot deformation and subsequent annealing were investigated by optical microscopy (OM) and electron backscattered diffraction (EBSD) technology. Initial microstructures with partially and fully developed new fine grains (NFGs), separately attended by continuous or interrupted hot forging, were various mixed grain structures composed of NFGs in necklace and retained coarse grains. It is shown that, during annealing, the development of grain size can be divided into three stages: i.e. an incubation of grain growth, a rapid coarsening and a normal grain growth. After a long time annealing of over 10 4 ks at 693 K, the average grain size for samples continuous compressed toε= 1.2 and those interrupted compressed toε= 1.6 were close. Moreover, orientations of such strain-induced fine grains were relatively randomly distributed, leading to a weakened basal texture, while the basal plane of retained coarse grains were perpendicular to the forging direction. Such texture even became weaker during subsequent annealing. The results show that the development of necklace NFGs during hot deformation can be effective for homogeneous grain refinement under subsequent annealing.

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“…It is reported that MgeGdeYeZr alloys exhibit the higher specific strength at both room temperature and elevated temperatures. Meanwhile, they own more excellent creep resistance than WE54 [2,3]. Thus, it provides an effective approach to improve the strength of Mg alloys.…”

Section: Introductionmentioning

confidence: 99%

Effects of casting process on microstructures and flow stress behavior of Mg–9Gd–3Y–1.5Zn–0.8Zr semi-continuous casting billets

Liu

Zhang

et al. 2014

Journal of Magnesium and Alloys

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Mge9Gde3Ye1.5Zne0.8Zr alloys own high strength, good heat and corrosion resistance. However, it is difficult for the fabrication of large-scale billets, due to the poor deformation ability and strong hot-crack tendency. This work investigated the casting process on the microstructures and flow stress behaviors of the semi-continuous casting billets for the fabrication of large-scale Mge9Gde3Ye1.5Zne0.8Zr billets. The casting process (electromagnetic intensity and casting speed) shows outstanding effects on the microstructures and flow stress behavior of the billets. The billets with the specific casting process (I ¼ 68 A, V ¼ 65 mm/min) exhibit uniform microstructures and good deformation uniformity.

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Enhanced strength and ductility of Mg–Gd–Y–Zr alloys by secondary extrusion

Cited by 92 publications

References 35 publications

A new high-strength extruded Mg-8Al-4Sn-2Zn alloy

A new high-strength extruded Mg-8Al-4Sn-2Zn alloy

Annealing behavior of a cast Mg-Gd-Y-Zr alloy with necklace fine grains developed under hot deformation

Effects of casting process on microstructures and flow stress behavior of Mg–9Gd–3Y–1.5Zn–0.8Zr semi-continuous casting billets

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