Microstructure and mechanical properties of a peak-aged Mg-5Y-2.5Nd-1.5Gd-0.5Zr casting alloy

Tian, Zheng; Yang, Qiang; Guan, Kai; Meng, Jian; Cao, Zhanyi

doi:10.1016/j.jallcom.2017.09.063

Cited by 29 publications

(4 citation statements)

References 47 publications

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“…In addition, the Zr-rich phase is relatively irregular in shape and distributes randomly in the matrix. The eutectic phase and the Y-rich phase have been identified as Mg 24 RE 5 phase and β-Mg 14 Nd 2 Y phase; detailed morphology and EDS spectrums of these phases can be found in our previous study [27,28].…”

Section: Corrosion Behaviormentioning

confidence: 89%

“…Figure 2b showed the comparative data of weight loss between two conditions after immersion. The weight loss of both samples was There are other categories of precipitated phases in both as-cast WE43 and WE43-T5 which are identified as the Y-rich phase and the Zr-rich phase [27]. The Y-rich phase has a regular shape with a small size of about 1 µm and mainly exists around eutectic in as-cast WE43, while in WE43-T5, Y-rich phases are mostly distributed on the grain boundary of the matrix.…”

Section: Corrosion Behaviormentioning

confidence: 98%

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Effect of Microstructure on Corrosion Behavior of WE43 Magnesium Alloy in As Cast and Heat-Treated Conditions

Yang

Gupta

Ding

et al. 2020

Metals

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The improvement in corrosion resistance of WE43 was well realized by heat treatment. To study the influence of microstructure on the corrosion behavior of WE43 in as-cast and heat-treated conditions, an immersion test was employed with as-cast and heat-treated samples in the 3.5% NaCl solution. The corrosion rate and change of morphology were recorded and the corrosion behavior was further investigated by scanning electron microscopy (SEM). The results indicated that the corrosion rate of the WE43 alloy decreased after heat treatment. It was observed that the eutectic gradually damages the protective film on the surface of the as-cast WE43 in the process of corrosion, which further increases the corrosion rate. The Zr-rich phase formed a domed structure resulting in the adjacent area being further corroded. The Y-rich phase has little effect on the corrosion reaction.

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Section: Corrosion Behaviormentioning

confidence: 89%

Section: Corrosion Behaviormentioning

confidence: 98%

Effect of Microstructure on Corrosion Behavior of WE43 Magnesium Alloy in As Cast and Heat-Treated Conditions

Yang

Gupta

Ding

et al. 2020

Metals

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“…Mg-RE alloys have high mechanical properties, which are mainly achieved via heat treatment (solution + aging, T6) to obtain a large number of nano-scale prismatic precipitates (β" or β ) [12,13]. Among them, Mg-Gd alloy has become a research focus because the precipitation strengthening effect of it is the most significant [14].…”

Section: Introductionmentioning

confidence: 99%

Strengthening of Mg Alloy with Multiple RE Elements with Ag and Zn Doping via Heat Treatment

et al. 2023

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Strengthening Mg alloys with rare earth elements has been a research focus for several decades. To minimize the usage of rare earth elements while enhancing mechanical properties, we adopted the strategy of alloying with multiple rare earth elements, namely Gd, Y, Nd, and Sm. Additionally, to promote the precipitation of basal precipitate, Ag and Zn doping was also induced. Thus, we designed a new cast Mg-2Gd-2Y-2Nd-2Sm-1Ag-1Zn-0.5Zr (wt.%) alloy. The microstructure of the alloy and its relevance to mechanical properties in various heat treatment conditions were investigated. After undergoing a heat treatment process, the alloy demonstrated exceptional mechanical properties, with a yield strength of 228 MPa and an ultimate tensile strength of 330 MPa achieved through peak-aging for 72 h at 200 °C. The excellent tensile properties are due to the synergistic effect of basal γ″ precipitate and prismatic β′ precipitate. In its as-cast state, its primary mode of fracture is inter-granular, whereas in the solid-solution and peak-aging conditions, the predominant mode of fracture is a mixture of trans-granular and inter-granular fractures.

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“…However, the demerits of Mg alloys, such as low stiffness, elastic modulus, and strength, especially at high temperatures, have limited their widespread applications. 1–3 One way to overcome these drawbacks in Mg alloys is to add hard reinforcing particles, which would then classify them into metal matrix composites (MMCs). 4,5 Mg matrix composites with optimal mechanical properties and a large production capacity have the potential to be employed in disk rotors, gearbox bearings, and connecting rods.…”

Section: Introductionmentioning

confidence: 99%

Effect of B₄C reinforcement and hot rolling on microstructure and mechanical properties of WE43 magnesium matrix composite

Banijamali

Palizdar

Nekouee

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this study, WE43 alloy matrix composites, reinforced with 2.5, 5, 7.5, and 10 wt% B4C particles have been produced by the stir casting technique at 750 °C. Cast ingots of the matrix alloy and the composites were then subjected to hot rolling at 480 °C. After that, the effect of B4C additions (0–10 wt%) as well as hot rolling on the microstructure and mechanical properties of WE43 alloy were investigated. Microstructural characterization following hot rolling revealed a relatively uniform distribution of B4C particles, well-bonded B4C particles to the matrix, and a minimal porosity level. Further, both as-cast and hot-rolled composites have shown considerable grain refinement and hence improved mechanical properties compared to unreinforced alloy. Twinning was the dominant deformation mechanism in the hot-rolled WE43 alloy, whereas dynamic recrystallization occurred extensively in hot-rolled composites. It was observed that tensile strength and hardness values were improved not only as B4C content increased but more due to the rolling effect; however, elongation to fracture was reduced. Maximum ultimate tensile strength of ∼284 MPa and yield strength of ∼259 MPa with an improved hardness to ∼97 HB were obtained for the hot-rolled WE43-10%B4C composite.

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Microstructure and mechanical properties of a peak-aged Mg-5Y-2.5Nd-1.5Gd-0.5Zr casting alloy

Cited by 29 publications

References 47 publications

Effect of Microstructure on Corrosion Behavior of WE43 Magnesium Alloy in As Cast and Heat-Treated Conditions

Effect of Microstructure on Corrosion Behavior of WE43 Magnesium Alloy in As Cast and Heat-Treated Conditions

Strengthening of Mg Alloy with Multiple RE Elements with Ag and Zn Doping via Heat Treatment

Effect of B₄C reinforcement and hot rolling on microstructure and mechanical properties of WE43 magnesium matrix composite

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Microstructure and mechanical properties of a peak-aged Mg-5Y-2.5Nd-1.5Gd-0.5Zr casting alloy

Cited by 29 publications

References 47 publications

Effect of Microstructure on Corrosion Behavior of WE43 Magnesium Alloy in As Cast and Heat-Treated Conditions

Effect of Microstructure on Corrosion Behavior of WE43 Magnesium Alloy in As Cast and Heat-Treated Conditions

Strengthening of Mg Alloy with Multiple RE Elements with Ag and Zn Doping via Heat Treatment

Effect of B4C reinforcement and hot rolling on microstructure and mechanical properties of WE43 magnesium matrix composite

Contact Info

Product

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About

Effect of B₄C reinforcement and hot rolling on microstructure and mechanical properties of WE43 magnesium matrix composite