Dynamic microstructural changes during hot extrusion and mechanical properties of a Mg–5.0 Zn–0.9 Y–0.16 Zr (wt.%) alloy

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

doi:10.1016/j.msea.2011.01.103

Cited by 122 publications

(44 citation statements)

References 26 publications

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“…4), which is consistent with the existing results. 4,[10][11][12][17][18][19][20][21][22][23] So we can conclude that the Zr role is to re ne α-Mg dendrite through heterogeneous nucleation and the optimum addition content is 0.3%. Both decreasing and increasing Zr content all leads the grain size to increase.…”

Section: Effect Of Nd Content On Mechanical Propertiesmentioning

confidence: 82%

“…But the existing investigations indicate that the Z phase is always coherent with α-Mg matrix and the interface debonding is dif cult to occur. 2,4,[10][11][12][13][14][15][16] It is found that a continuous network distribution has formed in this alloy (Fig. 8(b)).…”

Section: Effect Of Nd Content On Mechanical Propertiesmentioning

confidence: 84%

“…As mentioned in the section of Introduction, the formation of the ternary phases depends on the Zn/Y ratio. 2,[4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] Summarizing the existing investigations, the following rules can be concluded: Zn/Y < 0.6, only one ternary phase of Z can form; 0.6 < Zn/Y < 0.85, two phases of Z and W will form; 0.85 < Zn/Y < 2.05, only W phase can form. For the present work, the Zn/RE ratios of the alloys with 0%, 0.3%, 0.5%, 1%, 2% and 3% Nd are 2, 1.54, 1.33, 1, 0.67 and 0.5 respectively.…”

Section: Effect Of Nd Content On Microstructurementioning

confidence: 99%

“…And all of the ternary phases belong to hard phase. 2,4,[10][11][12][13][15][16][17][18][19][20][21][22][23][24] So the hardness increases as the Nd addition increases. But for the tensile properties (UTS and elongation), it can be found that their changes are just opposite to that of the grain size (comparing Figs.…”

Section: Effect Of Nd Content On Microstructurementioning

confidence: 99%

“…Therefore, the I and/or Z phase-containing alloys have high mechanical properties, especially good high-temperature mechanical properties. 2,4,[10][11][12][13][14][15][16] But for the W phase, most of the existing investigations reported that it was not coherent with Mg matrix and the interface was easy to debond. 4,[17][18][19][20][21] Moreover, the W phase is also easy to crack.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Nd or Zr Addition on Microstructure and Mechanical Properties of As-Cast Mg-Zn-Y Alloy

et al. 2016

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The effects of Nd or Zr addition on microstructure and mechanical properties of casting Mg-Zn-RE alloy have been investigated. The results indicate that the optimum contents of Nd and Zr are 0.5% and 0.3% respectively. The less or higher contents all increase grain size and accelerate the formation of shrinkage porosity, and thus decrease tensile properties and change fracture regime from transgranular mode to intergranular mode during tensile tests. The Mg-Zn-RE ternary phases transform from W (Mg 3 Zn 3 (Nd,Y) 2 ) in turn into W + Z (Mg 12 Zn(Nd,Y)) and Z as the Nd content increases and their distribution gradually changes from small discontinuous lath form to continuous network form. The grain bonding strength of an alloy with a certain amount of W phase that distributes in a discontinuous form is high than that of the alloy with the Z phase, and thus the W phase is an ideal strengthening phase. The alloy with 0.5 Nd and 0.3% Zr, named ZW21 alloy, has the smallest grains and highest grain bonding strength, and so has the highest comprehensive mechanical properties.

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Section: Effect Of Nd Content On Mechanical Propertiesmentioning

confidence: 82%

Section: Effect Of Nd Content On Mechanical Propertiesmentioning

confidence: 84%

Section: Effect Of Nd Content On Microstructurementioning

confidence: 99%

Section: Effect Of Nd Content On Microstructurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Nd or Zr Addition on Microstructure and Mechanical Properties of As-Cast Mg-Zn-Y Alloy

et al. 2016

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Development of Mg ‐Based Degradable Metallic Biomaterials

2017

Metallic Biomaterials

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Effect of Y‐Element on Microstructure and Mechanical Properties of As‐Cast Mg–3Zn–1Mn Alloy Containing I and W Phase

Zhang

et al. 2019

Adv Eng Mater

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Magnesium (Mg) alloy has a wide range of applications in the biomedical field at present. The Mg–Zn–Mn ternary alloy has excellent corrosion resistance, but the addition of Mn element reduces the ductility of the alloy. In this study, a little rare earth element Y is added to the Mg–Zn–Mn ternary alloy to improve the mechanical properties of the alloy, especially the ductility. Experimental results show that the second phase composition and mechanical properties of the alloys are improved by introducing the new second phase (quasicrystal I phase Mg3Zn6Y and W phase Mg3Zn3Y2). When the content of rare earth element Y is 1 wt%, the mechanical properties of the as‐cast alloy are optimized that the tensile strength is increased by 60 MPa compared with the Mg–Zn–Mn alloy, reaching 198 MPa. The elongation increased from 9% to 21%; therefore, the ductility of the material is greatly improved.

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Dynamic microstructural changes during hot extrusion and mechanical properties of a Mg–5.0 Zn–0.9 Y–0.16 Zr (wt.%) alloy

Cited by 122 publications

References 26 publications

Effects of Nd or Zr Addition on Microstructure and Mechanical Properties of As-Cast Mg-Zn-Y Alloy

Effects of Nd or Zr Addition on Microstructure and Mechanical Properties of As-Cast Mg-Zn-Y Alloy

Development of Mg ‐Based Degradable Metallic Biomaterials

Effect of Y‐Element on Microstructure and Mechanical Properties of As‐Cast Mg–3Zn–1Mn Alloy Containing I and W Phase

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