Superplastic behavior and microstructure evolution of a fine-grained Mg–Y–Nd alloy processed by submerged friction stir processing

Cao, Genghua; Zhang, Datong; Chai, Fang; Zhang, Weiwen; Qiu, Cheng

doi:10.1016/j.msea.2015.06.086

Cited by 39 publications

(9 citation statements)

References 40 publications

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“…In our research, the main phases in the specimens are α-Mg matrix, Zr-rich particles, Mg 12 Nd, and Mg 24 Y 5 [34,43]. Coy et al reported that the Volta potential values of Mg 12 (Nd,Y) phase, Zr-rich, and Y-rich particles are all higher than the α-Mg matrix in wrought WE43-T6 alloy [44].…”

Section: Discussionmentioning

confidence: 60%

“…Figure 1 b shows the back-scattered electron (BSE) image of second phases distributed randomly in the BM. According to our previous work [ 34 ], the main coarse second phases in the BM are Mg 12 Nd (coarse eutectic networks mainly located at the grain boundaries) and Mg 24 Y 5 (cubic-shaped particles mainly decorated in the intragranular region), respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The electrical potential, volume fraction, size, and distribution of second phases have pronounced influences on the corrosion behavior of Mg alloys [ 2 , 17 ]. In our research, the main phases in the specimens are α-Mg matrix, Zr-rich particles, Mg 12 Nd, and Mg 24 Y 5 [ 34 , 43 ]. Coy et al reported that the Volta potential values of Mg 12 (Nd,Y) phase, Zr-rich, and Y-rich particles are all higher than the α-Mg matrix in wrought WE43-T6 alloy [ 44 ].…”

Section: Discussionmentioning

confidence: 99%

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In Vitro Corrosion Study of Friction Stir Processed WE43 Magnesium Alloy in a Simulated Body Fluid

Cao

Zhang

2016

Materials

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Corrosion behavior of friction stir processing (FSP) WE43 alloy in a simulated body fluid (SBF) was investigated. Micro-galvanic corrosion was the dominated corrosion behavior, and the corrosion resistance of FSP WE43 alloy was improved compared to the cast counterpart. Furthermore, due to the fine-grained and homogeneous microstructure, uniform corrosion morphology was observed on FSP WE43 alloy. According to the tensile properties of specimens with different immersion time intervals, FSP WE43 alloy shows better performance to maintain the mechanical integrity in SBF as compared to the as-cast alloy.

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Section: Discussionmentioning

confidence: 60%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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In Vitro Corrosion Study of Friction Stir Processed WE43 Magnesium Alloy in a Simulated Body Fluid

Cao

Zhang

2016

Materials

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“…Such values are achievable with commercial products (Table 1). Considering research area, values of UTS about 400 MPa have been reached, however, non-standard conditions of processing, such as experiments with hydrostatic extrusion performed at laboratory temperatures [10], submerged friction stir processing [11,12] or long ageing times at lower temperatures (150-200 • C) after sufficient thermomechanical treatment [7], are necessary. However, such processing conditions are not economically advantageous for commercial producers of magnesium-based alloys or are feasible only in the laboratory.…”

Section: Introductionmentioning

confidence: 99%

WE43 magnesium alloy – material for challenging applications

Kubásek¹,

Dvorský²,

Čavojský³

et al. 2020

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WE43 magnesium alloy is a commercial lightweight material developed for application at temperatures up to 250 • C. This alloy is also considered for applications in medicine as a biodegradable material. The present study provides microstructure characterization and related mechanical properties of the WE43 alloy prepared by different processing techniques including casting, extrusion, rotary swaging and heat treatment. Results indicate huge differences in observed microstructures, such as precipitation of secondary phases, grain coarsening, texture formation and also concomitant changes of mechanical properties, such as tensile yield strength, ultimate tensile strength, compressive yield strength, ultimate compressive strength and elongation to fracture. Although this material is well-known, WE43 prepared in this study by a combination of extrusion and rotary swaging offered highly improved mechanical properties, including a tensile yield strength of 370 MPa and elongation of 15 %. Such a combination of values is rarely seen in literature and is not generally offered for commercially produced materials although both preparation methods are easily commercially available.

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“…Friction stir processing (FSP) is a typical severe plastic deformation (SPD) method that is developed on the principles of friction stir welding (FSW) [9]. During FSP, metallic materials are subjected to the combined effect of a deformation force and friction heat, which can induce complete dynamic recrystallization (DRX) and results in fine-grained equiaxed structure in the stir zone (SZ) [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Processing Pass on the Microstructure and Mechanical Properties of a Friction Stir Processed As-Cast Mg-6 wt % Sn Alloy

Zhang

Chen

Xiyun

et al. 2018

Metals

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In this study, as-cast Mg-6 wt % Sn alloy is subjected to one-pass and two-pass friction stir processing (FSP). The effect of processing pass on microstructure and mechanical properties of FSP Mg-6Sn alloy is investigated. It is found that one-pass FSP leads to the breakage and partial dissolution of the Mg2Sn phase in the stir zone (SZ) and two-pass FSP leads to the further dissolution and dynamic precipitation of the Mg2Sn phase. Dynamic recrystallization (DRX) takes place in the SZ of an Mg-6Sn alloy undergoing FSP. Compared to one-pass FSP, two-pass FSP brings about further grain refinement in the SZ. A strong {0001} basal texture is developed in the SZ of a Mg-6Sn alloy from FSP and the change of the sample region or processing pass has little influence on the texture. Compared to an as-cast Mg-6Sn sample, one-pass FSP brings about significant improvement in mechanical properties. Two-pass FSP leads to the further increase in yield strength (YS) and ultimate tensile strength (UTS) but elongation (EL) is reduced. The continuous increase in strength is attributed to the grain refinement and the dissolution and dynamic precipitation of Mg2Sn phase achieved by FSP.

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Superplastic behavior and microstructure evolution of a fine-grained Mg–Y–Nd alloy processed by submerged friction stir processing

Cited by 39 publications

References 40 publications

In Vitro Corrosion Study of Friction Stir Processed WE43 Magnesium Alloy in a Simulated Body Fluid

In Vitro Corrosion Study of Friction Stir Processed WE43 Magnesium Alloy in a Simulated Body Fluid

WE43 magnesium alloy – material for challenging applications

The Effect of Processing Pass on the Microstructure and Mechanical Properties of a Friction Stir Processed As-Cast Mg-6 wt % Sn Alloy

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