Microstructure, mechanical properties, and corrosion behavior of degradable Mg-Al-Cu-Zn-Gd alloys

Geng, Zhaowen; Xiao, D.H.; Chen, Liang

doi:10.1016/j.jallcom.2016.05.288

Cited by 70 publications

(20 citation statements)

References 13 publications

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“…The performance comparison between the present extruded alloy and other extruded alloys (Laser et al, 2008;Li et al, 2008;Zhang et al, 2010;Ma et al, 2014;Geng et al, 2016;Hou et al, 2016;Tong et al, 2016;Miao et al, 2017;Zhao et al, 2017) is shown…”

Section: Properties Comparisonmentioning

confidence: 96%

Microstructural Characteristics, Mechanical and Corrosion Properties of an Extruded Low-Alloyed Mg-Bi-Al-Zn Alloy

Cheng

Liu

et al. 2020

Front. Mater.

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An extruded low-alloyed Mg-Bi-Al-Zn alloy combining excellent tensile properties (YS = 201 MPa, EL = 29. 4%) with high corrosion resistance (P i = 0.14 mm/a) for biomedical application is successfully developed in this study. The extruded alloy is mainly composed of dynamic recrystallized (DRXed) grains (2.32 ± 0.12 µm) and strongly textured coarse non-DRXed grains, as well as certain nano-scaled Mg 3 Bi 2 precipitates (135.68 ± 27.86 nm). Note that most basal planes for non-DRXed grains are preferentially distributed parallel to the extrusion direction. The study explored the dependences of the properties and relevant mechanisms of the studied alloy on its microstructural characteristics in terms of grain size, grain orientation, and precipitates.

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Section: Properties Comparisonmentioning

confidence: 96%

Microstructural Characteristics, Mechanical and Corrosion Properties of an Extruded Low-Alloyed Mg-Bi-Al-Zn Alloy

Cheng

Liu

et al. 2020

Front. Mater.

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“…In recent years, the application of degradable Mg alloys as hydraulic fracturing tools, such as fracturing balls, ball seats, and bridge plugs, has gained much attention. [1][2][3] Hydraulic fracturing technique is considered the most economically efficient means for the development of unconventional reservoirs. [4,5] Figure 1 shows a schematic of the horizontal staged fracturing system.…”

Section: Introductionmentioning

confidence: 99%

“…Mg-14Zn-Zr, [12] and Mg-17Al-7Cu-3Zn-1Gd [2] alloys. In these studies, to improve the comprehensive properties of Mg alloys, various alloying elements are added.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, to conquer these limitations, great efforts have been paid to improve the mechanical and degradable properties of the Mg alloys. So far, many degradable Mg‐based materials with different components have recently been developed, such as Mg–1Ni–1.5Y, [ 10 ] Mg–3Zn–1Y–4Cu, [ 11 ] Mg–14Zn–Zr, [ 12 ] and Mg–17Al–7Cu–3Zn–1Gd [ 2 ] alloys. In these studies, to improve the comprehensive properties of Mg alloys, various alloying elements are added.…”

Section: Introductionmentioning

confidence: 99%

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Investigations on the Microstructure and Degradation Behavior of Hollow Glass Microspheres/Mg Alloy Composites

Lin

Liu

et al. 2021

Adv Eng Mater

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Degradable materials with low density exhibit unique applications in the petroleum equipment field. Herein, hollow glass microspheres (HGM)‐reinforced Mg alloy degradable composites are fabricated. The microstructure and degradation behavior of the composites are investigated using scanning electron microscopy, immersion tests, and electrochemical measurements. Then the influence mechanisms of the HGM on the degradation property of composites are further revealed. The results show that the addition of the HGM significantly reduces the density of the composites. Different degrees of chemical reaction between the Mg alloy melt and HGM wall happen during the fabrication of the composites, resulting in the formation of MgO and Mg2Si. From the corrosive morphologies of the composites, Mg2Si phase can serve as a microgalvanic cathode consequently inducing more galvanic corrosion. The interface between HGM and matrix alloy can serve as the initiation site for pitting corrosion and increase the exposed area of the matrix in the aggressive medium. The electrochemical measurements prove that the HGM can act a part in facilitating the exfoliation of degradation products. Consequently, the HGM greatly increases the degradation rate of the composites in the KCl solution. The current study provides a new insight for developing lightweight Mg‐based composites with quickly degradable performance.

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“…Therefore, the Mg‐Gd‐Ni alloy containing Ni‐containing LPSO phase might have a superior strength but high corrosion rate. Such properties characteristics were suitable for the application in the field of temporary plugging tools in oil/gas wells . Obviously, the mechanical and corrosion properties of the Mg‐Gd‐Ni alloys should be closely related to the volume fraction of LPSO phase.…”

Section: Introductionmentioning

confidence: 99%

Effects of volume fraction of Ni‐containing LPSO phase on mechanical and corrosion properties of Mg‐Gd‐Ni alloys

Han

Zhang

Yang³

et al. 2018

Materials & Corrosion

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Mg‐Gd‐Ni alloys with same Gd/Ni mole ratios but different volume fraction of Ni‐containing LPSO phase were prepared. The effects of the volume fraction of Ni‐containing LPSO phase on the mechanical and corrosion properties of Mg‐Gd‐Ni alloys were systematically investigated. It was found that the strength was remarkably enhanced but the plasticity was decreased with the increase of the volume fraction of Ni‐containing LPSO phase. The electro‐potential distribution characteristic shows that the Ni‐containing LPSO phase had a lower electro‐potential than the Mg matrix, which was related to the existence of Ni in LPSO phase. Consequently, Ni‐containing LPSO phase was preferentially eroded during micro‐galvanic corrosion. High volume fraction LPSO phases accelerated the corrosion rate of Mg‐Gd‐Ni alloy. The detailed corrosion mechanisms were discussed in the present study.

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Microstructure, mechanical properties, and corrosion behavior of degradable Mg-Al-Cu-Zn-Gd alloys

Cited by 70 publications

References 13 publications

Microstructural Characteristics, Mechanical and Corrosion Properties of an Extruded Low-Alloyed Mg-Bi-Al-Zn Alloy

Microstructural Characteristics, Mechanical and Corrosion Properties of an Extruded Low-Alloyed Mg-Bi-Al-Zn Alloy

Investigations on the Microstructure and Degradation Behavior of Hollow Glass Microspheres/Mg Alloy Composites

Effects of volume fraction of Ni‐containing LPSO phase on mechanical and corrosion properties of Mg‐Gd‐Ni alloys

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