The relationship between (Mg,Zn)3RE phase and 14H-LPSO phase in Mg–Gd–Y–Zn–Zr alloys solidified at different cooling rates

Zhang, S.; Yuan, Guangyin; Lü, Chen; Ding, Wenjiang

doi:10.1016/j.jallcom.2010.12.136

Cited by 139 publications

(35 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These lamellar phases have different orientations in different grains, which indicate that they have a certain crystallographic orientation relative to the a-Mg matrix. This finding is also commonly observed in other [29] that a fine lamellar longperiod stacking ordered structure penetrated throughout the matrix grains at a very slow cooling rate (i.e., 0.005°C/s). Before thermal extrusion, the Mg-9Er-6Y-xZn-0.6Zr alloys were prepared in an electromagnetic induction furnace and solidified at ambient air at a cooling rate of *0.01°C/s.…”

Section: Resultssupporting

confidence: 86%

A study of the microstructure, phase composition, and mechanical properties of extruded Mg–9Er–6Y–xZn–0.6Zr magnesium alloys

et al. 2012

View full text Add to dashboard Cite

The microstructure, phase composition, and mechanical properties of Mg-9Er-6Y-xZn-0.6Zr (x = 1, 3, 5 wt%; nominal chemical composition) series alloys were investigated through optical microscopy, X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectrometry, transmission electron microscopy, and tensile tests. Numerous granular Mg 24 (Er, Y, Zn) 5 phases were distributed in a discontinuous network mainly along the grain boundaries in the alloy with 1 wt% Zn. With increasing Zn content, the Mg 24 (Er, Y, Zn) 5 phases in the alloys gradually disappeared, the amount of block Mg 12 Zn(Y, Er) phases increased, and the block size became larger. In addition, a few lamellar phases grew parallel with one another from the grain boundaries to the grain interior in the alloys. The crystallographic structures of the Mg 12 Zn(Y, Er) and Mg 24 (Er, Y, Zn) 5 phases were confirmed as 18R-type long-period stacking ordered structures and body-centered cubic structures, respectively. The Mg 12 Zn(Y, Er) phases with long-period stacking ordered structures increased the strength and toughness of the alloys more than the Mg 24 (Er, Y, Zn) 5 phases with body-centered cubic structures.

show abstract

Section: Resultssupporting

confidence: 86%

A study of the microstructure, phase composition, and mechanical properties of extruded Mg–9Er–6Y–xZn–0.6Zr magnesium alloys

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Table 2. The (Mg,Zn)3Sm phase is similar to (Mg,Zn)3RE phase reported by Zhang et al [23] and Yuan et al [24]. The (Mg,Zn)3RE phase has a DO3-type structure with a = 0.72 nm.…”

Section: Nominal Alloys Composition (Wt %)supporting

confidence: 81%

The Microstructures and Tensile Properties of As-Extruded Mg–4Sm–xZn–0.5Zr (x = 0, 1, 2, 3, 4 wt %) Alloys

Che

Cai

Cheng

et al. 2017

Metals

View full text Add to dashboard Cite

Abstract:The microstructures and tensile properties of as-cast and as-extruded Mg-4Sm-xZn-0.5Zr (x = 0, 1, 2, 3, 4 wt %) alloys were systematically investigated by optical microscope, X-ray diffractometer (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). Numerous nanoscale dynamic precipitates could be observed in the as-extruded alloys containing high content of Zn, and the nanoscale particles were termed as (Mg,Zn) 3 Sm phase. Some basal disc-like precipitates were observed in as-extruded Mg-4Sm-4Zn-0.5Zr alloy, which were proposed to have a hexagonal structure with a = 0.556 nm. The dynamic precipitates effectively pinned the motions of DRXed (dynamic recrystallized) grain boundaries leading to an obvious reduction of DRXed grain size, and the tensile yield strength of as-extruded alloy was improved. The as-extruded Mg-4Sm-4Zn-0.5Zr alloy exhibits the best comprehensive mechanical properties at room temperature among all the alloys, and the yield strength, ultimate tensile strength and elongation are about 246 MPa, 273 MPa and 21% respectively.

show abstract

“…4d supplies the data of EDX analysis of the region marked with B to identify the phase. The results demonstrate that the phases distributed along the original grain boundaries had face-centered cubic structure and had an average composition of Mg-16.9Gd-8.8Y-3.0Zn (at%), so they should be (Mg,Zn) 3 (Gd,Y) [34,35]. In the SAED patterns shown in Fig.…”

Section: Resultsmentioning

confidence: 86%

Microstructures and mechanical properties of high-strength Mg–Gd–Y–Zn–Zr alloy sheets processed by severe hot rolling

Zheng

et al. 2012

Journal of Alloys and Compounds

112

View full text Add to dashboard Cite

The relationship between (Mg,Zn)3RE phase and 14H-LPSO phase in Mg–Gd–Y–Zn–Zr alloys solidified at different cooling rates

Cited by 139 publications

References 23 publications

A study of the microstructure, phase composition, and mechanical properties of extruded Mg–9Er–6Y–xZn–0.6Zr magnesium alloys

A study of the microstructure, phase composition, and mechanical properties of extruded Mg–9Er–6Y–xZn–0.6Zr magnesium alloys

The Microstructures and Tensile Properties of As-Extruded Mg–4Sm–xZn–0.5Zr (x = 0, 1, 2, 3, 4 wt %) Alloys

Microstructures and mechanical properties of high-strength Mg–Gd–Y–Zn–Zr alloy sheets processed by severe hot rolling

Contact Info

Product

Resources

About