Microstructure and mechanical properties of ZK60–Yb magnesium alloys

Yu, Wenbin; Liu, Zhiyi; He, Hong; Cheng, Ning; Li, Xuelian

doi:10.1016/j.msea.2007.09.027

Cited by 78 publications

(33 citation statements)

References 17 publications

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“…E is determined as the Zr-rich particle which acts as a grain refiner in magnesium alloys. However, the isolated island-shaped particle marked as C is comprised of Mg, Zn, and Yb and the atomic ratio of Zn and Yb is close to 5:1, which is identified as Mg x Zn 5 Yb based on the reference 15 . Furthermore, the Mg-Zn-Yb ternary phase is not observed in the XRD patterns ( Figure 3) mainly because of the low content.…”

Section: Characterization Of As-cast Microstructurementioning

confidence: 99%

“…Two endothermic peaks appearing at temperatures of approximately 354.7 and 389.3 ºC were found for the as-cast alloy, while only one endothermic peak occurred at 389.7 ºC for the alloy after homogenization. The first endothermic peak at 354.7 ºC probably corresponds to the eutectic temperature for α-Mg and Mg-Zn binary compounds (347 ºC) 25 , and the increase of eutectic temperature may be ascribed to the addition of Yb which is responsible for the formation of undissolved MgZn-Yb ternary particles 15 . The second endothermic peak at 389.3 ºC may be related to the melting of Mg-Zn-Yb ternary compound.…”

Section: Xrd and Dsc Analysismentioning

confidence: 99%

“…Moreover, the precipitation strengthening effects of Yb-rich precipitates are the most promising approach to developing high-performance alloys. Upon heat treatment, nano-scale precipitates with high density and homogeneity are observed in Mg-Zn-Yb [13][14][15] , Al-Li-Sc-Yb…”

mentioning

confidence: 99%

“…Furthermore, a morphological evolution of precipitates or secondary phases is achieved by adding appropriate amount of Yb [19][20][21] . Consequently, alloys with Yb modification exhibit enhanced performances in terms of mechanical properties 11,15,19 , corrosion resistance 13,18,22 , and thermal stability 10,21 compared with the unmodified counterparts.…”

mentioning

confidence: 99%

“…Recent studies focused mostly on microstructure and mechanical properties under the aged and deformed Ybcontaining alloys 15,19,20,22 . However, few reports are available concerning the homogenization treatment on Mg-Zn-Yb alloys.…”

mentioning

confidence: 99%

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Microstructure Evolution of the Mg-5.8 Zn-0.5 Zr-1.0 Yb Alloy During Homogenization

Jiang

Guo

et al. 2017

Mat. Res.

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The influence of homogenization treatment on microstructure evolution of Mg-5.8Zn-0.5Zr-1.0Yb (mass fraction, %) alloy was investigated under different annealing temperatures and holding times. Results indicated a severe dendritic segregation in the as-cast ingot. Zn and Yb segregate remarkably at the grain boundary and Zr appears in the form of precipitates. The Mg-Zn binary eutectic phases and a new ternary phase Mg-Zn-Yb are mainly distributed at dendrite boundaries. After homogenization, most of the eutectic phases dissolve into the matrix, except for a small amount of Mg-Zn-Yb phase. The area fractions of residual secondary phase decrease from 5.54% in the as-cast alloy to 0.59% in the well-homogenized sample. Microhardness test indicates that with the increasing temperature and holding time, microhardness value decreased sharply within the first stage of homogenization and then increased steadily to the local maximum value at 380 ºC and 12 h, followed by a slight reduction. Basing on the comprehensive analysis on microstructure and mechanical properties, the homogenization treatment at 380 ºC for 12 h is preferable.

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Section: Characterization Of As-cast Microstructurementioning

confidence: 99%

Section: Xrd and Dsc Analysismentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Microstructure Evolution of the Mg-5.8 Zn-0.5 Zr-1.0 Yb Alloy During Homogenization

Jiang

Guo

et al. 2017

Mat. Res.

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Microstructures and Tensile Mechanical Properties of Mg-9Zn-0.6Zr-2Er Magnesium Alloy

Baoxiang

2012

Characterization of Minerals, Metals, and Materials

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The Application of the Rare Earths to Magnesium and Titanium Metallurgy in Australia

Biesiekierski

Wen

2019

Advanced Materials

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These elements have huge relevance in the modern world, in applications spanning electronics, biomedicine, structural materials, and more; many rely on their unique electronic properties as the only nonradioactive elements with electrons occupying the f-subshell. [1] However, REEs have long been topics of moderate interest for their application in metallurgy, such as the bulk purification of steels and other alloys, or the improvement of the hightemperature properties of Mg alloys. [3] In recent years, however, progress in materials science has intensified interest in the REE elements. Notably, these are the rise of magnesium (Mg)-based alloys for both biodegradable implant materials and highly weight-sensitive applications in the automotive and aerospace sectors, and the growth of powder-metallurgy (PM) and additive-manufacturing (AM) fabrication methods for titanium (Ti). This change can be seen graphically in Figure 1, with the sharp spike in publications starting shortly after the new millennium. Thus, the importance of REEs, particularly the L-REEs, is highlighted in both the biomedical sector and in high-performance aerospace and automotive roles. Given the biomedical sector represented some 62 000 jobs and $4.9 billion of value to the national GDP in 2016, [5] Australia is well positioned to benefit from advances in biomedical technology; the recent launch of the Australian Space Agency suggests that the aerospace sector may soon grow as well. [6] As such, here, we will attempt to summarize relevant research over the past decade in this field, highlighting work from Australian institutions; the aim of this summary is to help assist in both understanding the current state-of-the-art, and to identify promising areas for future research where Australia is well positioned to leverage existing expertise. Rare Earth Application to Magnesium AlloysMuch of the current research on REE-containing alloys is concerned with Mg alloy systems. Mg-based alloys have long been attractive options in aerospace and automotive applications; at ≈1.7-8 g cm −3 , Mg-based alloys have the lowest density of the common structural metals by a substantial margin, [7] yielding exceptional specific strengths/stiffnesses ideal for weightsensitive applications. Beyond aerospace and automotive sectors, however, the last two decades have seen the sharp rise in interest by the biomedical sector. In this regard, Mg and its alloys are again well suited; Mg shows exceedingly low toxicities coupled with numerous bioactive effects, and can achieve Rare earth elements (REEs) have found application in metallurgical processes for nearly a century due to their unique chemical and physical properties but have gained increased attention in recent decades. Notably, the use of these elements may assist in the development of advanced magnesium and titanium products for applications spanning biomedicine, aerospace, and the automotive industry. To this end, current progress in this area, highlighting work done in Australian research organizations with partic...

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Microstructure and mechanical properties of ZK60–Yb magnesium alloys

Cited by 78 publications

References 17 publications

Microstructure Evolution of the Mg-5.8 Zn-0.5 Zr-1.0 Yb Alloy During Homogenization

Microstructure Evolution of the Mg-5.8 Zn-0.5 Zr-1.0 Yb Alloy During Homogenization

Microstructures and Tensile Mechanical Properties of Mg-9Zn-0.6Zr-2Er Magnesium Alloy

The Application of the Rare Earths to Magnesium and Titanium Metallurgy in Australia

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