Microstructure and mechanical properties of rolled sheets of Mg–Gd–Y–Zn–Zr alloy: As-cast versus as-homogenized

Xu, Cheng; Zheng, M.Y.; Xu, S.W.; Wu, Kun; Wang, E.D.; Kamado, Shigeharu; Wang, G.J.; Lv, Xiaoling

doi:10.1016/j.jallcom.2012.03.023

Cited by 40 publications

(14 citation statements)

References 24 publications

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“…Xu et al [94] reported that the as cast Mg-8.2Gd-3.8Y-1.0Zn-0.4Zr alloy consisted of α-Mg grains surrounded by Mg3(Gd,Y) eutectic compounds while the as-homogenized alloy consisted of 18R and 14 H type LPSO phases which was attributed to the higher strength of as-homogenized alloy. The same authors reported in [95] that the Mg-8.2Gd-3.8Y-1.0Zn-0.4Zr alloy exhibited better properties when it is rolled with 96% reduction.…”

Section: Mg-zn-re Higher Alloy Systemsmentioning

confidence: 99%

Mechanical Properties of Magnesium-Rare Earth Alloy Systems: A Review

Tekumalla

Seetharaman

Almajid

2014

Metals

178

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Magnesium-rare earth based alloys are increasingly being investigated due to the formation of highly stable strengthening phases, activation of additional deformation modes and improvement in mechanical properties. Several investigations have been done to study the effect of rare earths when they are alloyed to pure magnesium and other Mg alloys. In this review, the mechanical properties of the previously investigated different magnesium-rare earth based binary alloys, ternary alloys and other higher alloys with more than three alloying elements are presented.

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Section: Mg-zn-re Higher Alloy Systemsmentioning

confidence: 99%

Mechanical Properties of Magnesium-Rare Earth Alloy Systems: A Review

Tekumalla

Seetharaman

Almajid

2014

Metals

178

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“…9 shows the nominal tensile stress-strain curves of homogenized samples followed by different cooling rates. The corresponding tensile yield strength (TYS), ultimate tensile strength (UTS) and elongation to failure are summarized in Table 1; the tensile properties of the as-cast alloy [24] is also given in Table 1 for comparison. The as-cast alloy exhibits poor tensile properties due to the network shaped eutectic phases.…”

Section: Microstructure Of the Homogenized Alloy Followed By Cooling mentioning

confidence: 99%

Effect of cooling rate on the microstructure evolution and mechanical properties of homogenized Mg–Gd–Y–Zn–Zr alloy

Zheng

et al. 2013

Materials Science and Engineering: A

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“…The micro-crack generated easily from these coarse particles, and as a result of high volume of precipitates, too many micro-cracks initiated from these precipitates and connected to each other till the formation of the macro-cleavage [13]. It is the residual stress and high volume of precipitates deteriorating the ductility of the samples forged and compressed at lower temperature [14].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Ductility enhancement of EW75 alloy by multi-directional forging

Hong

Chen

et al. 2014

Journal of Magnesium and Alloys

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In this study, the Mge7Gde5Ye1Nde0.5Zr alloy can reach a high ductility by the process of multi-directional forging, and the evolution of the microstructure, texture and the mechanical properties were discussed systematically. The results show that after the solutionized sample was multi-forged at 500 C, its grain size can be refined from 292 um to 58 um. As the forging temperature decreased, fine particles precipitated in the matrix. The volume fraction of the particles increased with the forging temperature decreasing, so the nucleation and growth of crystallization were strongly restricted. There was no recrystallization as the forging temperature fell to 410 C, and the severe deformed grains distributed as streamlines perpendicular to the final compression axis. The texture intensity decreased with increasing forging passes. The sample with best ductility was obtained after compressed at 470 C, with an elongation to failure of 21% at room temperature, which is increased by 200%, in comparison with that of the samples in solutionized condition. EBSD results revealed that the mean grain size was 15 um. Refined grains as well as the weakened texture were the key factors to its high ductility.

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Microstructure and mechanical properties of rolled sheets of Mg–Gd–Y–Zn–Zr alloy: As-cast versus as-homogenized

Cited by 40 publications

References 24 publications

Mechanical Properties of Magnesium-Rare Earth Alloy Systems: A Review

Mechanical Properties of Magnesium-Rare Earth Alloy Systems: A Review

Effect of cooling rate on the microstructure evolution and mechanical properties of homogenized Mg–Gd–Y–Zn–Zr alloy

Ductility enhancement of EW75 alloy by multi-directional forging

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