Influence of alloying element Zn on the microstructural, mechanical and corrosion properties of binary Mg-Zn alloys after severe plastic deformation

Němec, Martin; Jäger, Aleš; Tesař, Karel; Gärtnerová, V.

doi:10.1016/j.matchar.2017.10.017

Cited by 49 publications

(18 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…28,29,38 Nonequilibrium material processing also leads to a coupling effect of NS/ UFG and enhanced solubility of desired alloying elements in the mat rix. 24,25,32,[40][41][42][43] For example, Zhang et al studied an UFG binary Mg-Y alloy made from gas-atomized alloy powder followed by degassing and hot extrusion. 32 The APT results (Figure 2b) revealed that the asextruded Mg-Y contained 1.6 at% Y in solid solution, far beyond the equilibrium solubility at ambient CG7091-T6 [24] UFG-as-forged temperature.…”

Section: Precipitates Versus Supersaturated Solid Solution In Ufg Mg Alloysmentioning

confidence: 99%

Precipitation in nanostructured alloys: A brief review

Zheng

Dasari

et al. 2021

MRS Bulletin

View full text Add to dashboard Cite

Precipitates have been utilized to strengthen various alloys since early last century. Nanostructured (NS) or ultrafine grain (UFG) structured alloys were extensively developed in recent decades, facing a common challenge of limited ductility. While introducing precipitates emerged as an effective strategy to solve the strength-ductility tradeoff issue, the precipitation behavior in NS or UFG alloys differs from that in conventional coarse-grained counterparts. This article provides a review on the scientific discovery of precipitation in NS or UFG alloys in the past 20 years, including the formation mechanism and growth of precipitates, the interplay between precipitates and solid solutes, dislocations, or grain boundaries, as well as the consequent mechanical behavior. Specifically, this article covers Al alloys, Mg alloys, Ti alloys, and high-entropy alloys. Modern research trends in this field are highlighted.

show abstract

Section: Precipitates Versus Supersaturated Solid Solution In Ufg Mg Alloysmentioning

confidence: 99%

Precipitation in nanostructured alloys: A brief review

Zheng

Dasari

et al. 2021

MRS Bulletin

View full text Add to dashboard Cite

show abstract

“…Extensive interest in degradable metal for implants has led to numerous notable literature and important progress in this field, especially the Mg-Zn binary alloys have attracted great attention as a biodegradable material due to their good biocompatibility and good biosafety [1][2][3][4][5]. With respect to the applications of biodegradable implants, mechanical and corrosion properties of a material are the most important [6]. As a proper biocompatible element, Zn could improve corrosion resistance of Mg alloys by elevating the corrosion potential, promoting the intact corrosion film and elevating the charge transfer resistance of magnesium [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…Taking into account Zn concentrations over solubility limit (approximately 6.2 wt% in Mg-Zn binary alloy), corrosion properties are deteriorated due to the formation of secondary phases and the consequent galvanic couple effect, which are responsible for production of excessive hydrogen gas [10][11][12][13]. In addition, the mechanical properties of Mg-Zn alloys with the Zn concentration ranging from 1.0 to 6.0 wt% increased with Zn content [6,7,14]. Therefore, on the whole, Mg-6Zn alloy shows advantages over its potential rivals in the application of biomedical implants.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Mechanical Properties of Mg–6Zn Alloy by Deformation-Induced Nanoprecipitation

Yan

Liu

Xue

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

We presented the solution of deformation-induced precipitation after homogenization to enhance the mechanical properties of Mg-6Zn alloys. The results show that the improved strategy exhibits more effective strengthening role than grain refinement methods based on low-temperature severe plastic deformation under the same strain. The low-temperature deformation with larger extrusion ratio results in massive nano-sized precipitates and excellent mechanical properties with the yield strength of 355 MPa and the ultimate tensile strength of 405 MPa. The increased mechanical properties are strong and tough enough to resist the stress and not be worn away when the alloy nail penetrates through the pig thigh bone, potentially extending more orthopedic surgery applications for Mg-Zn alloys.

show abstract

“…When Zn content is about 6 wt.% (hereafter, all compositions are in weight percent unless stated otherwise), the alloy has a significant aging strengthening effect [11]. In addition, research [12] indicates that alloy with lower Zn content has better corrosion resistance than alloy with higher Zn content. When the Zn content exceeds the solid solubility limit, the corrosion performance is greatly reduced.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on Microstructure and Mechanical Properties of Mg-5Zn-1Mn Alloy Tube

Cao

et al. 2020

Metals

View full text Add to dashboard Cite

The effects of heat treatment on the microstructure, mechanical properties and electrochemical property of the as-extruded Mg-5Zn-1Mn (ZM51) alloy tube are investigated by optical microstructure (OM), X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electrical microscope (TEM), uniaxial tensile test, and electrochemical test. The results show that the as-cast structure is a typical dendritic structure, mainly composed of α-Mg and Mg7Zn3 eutectic compounds. After homogenization, most of Mg7Zn3 eutectic phases are dissolved in the Mg matrix. During the extrusion process, the ZM51 alloy has undergone complete dynamic recrystallization and has a good elongation, reaching 21.4%. T6, especially T4 + double aging treatment, can significantly improve the mechanical properties of the as-extruded tube. The microstructure reveals that the precipitation strengthening of the finely dispersed MgZn2 precipitates is the main reason for the strength increase. The fracture micromorphology of the as-extruded tube is mainly composed of dimples and cleavage facets, which is a typical ductile fracture. The fracture mode of the as-aged alloy tubes belongs to cleavage fracture. In addition, the electrochemical test results show the solution-treated ZM51 alloy tube has the best corrosion resistance. The improvement of corrosion resistance is mainly due to the microstructure uniformity and low phase volume fraction.

show abstract

Influence of alloying element Zn on the microstructural, mechanical and corrosion properties of binary Mg-Zn alloys after severe plastic deformation

Cited by 49 publications

References 19 publications

Precipitation in nanostructured alloys: A brief review

Precipitation in nanostructured alloys: A brief review

Enhancing Mechanical Properties of Mg–6Zn Alloy by Deformation-Induced Nanoprecipitation

Effect of Heat Treatment on Microstructure and Mechanical Properties of Mg-5Zn-1Mn Alloy Tube

Contact Info

Product

Resources

About