Effects of Cold Rolling on Microstructural Evolution and Mechanical Properties of Mg–14Li–1Zn Alloy

Fu, Kunning; Wang, Jiahao; Qiu, Min; Gao, Fan; Wu, Ruizhi; Hou, Linrui; Zheng, Hao; Zhang, Jinhuai; Zhang, Milin

doi:10.1002/adem.201801344

Cited by 12 publications

(8 citation statements)

References 24 publications

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“…e microstructure of the as-cast Mg-14Li-1Zn alloy has been reported in our previous literature [6]. It is known that the matrix of the alloys is β(Li), in which a minute quantity of spherical α(Mg) distribute.…”

Section: Resultsmentioning

confidence: 91%

“…All the data used to support the findings of this study are included within the article and are available from the corresponding author upon request. Previously reported ascast microstructures of the Mg-14Li-1Zn alloy were used to support this study and are available at [6].…”

Section: Data Availabilitymentioning

confidence: 99%

“…In our previous literature [6], considering the excellent plasticity of the Mg-14Li-1Zn alloy, the alloy was cold rolled directly with the purpose to obtain strain strengthening as large as possible. e ultimate tensile strength is improved from 117 MPa to 210 MPa with a rolling reduction of larger than 70%.…”

Section: Introductionmentioning

confidence: 99%

“…In the previous literatures [6][7][8], the high Li content Mg-Li alloys were rolled at either elevated or room temperature. In summary, the strengthening effect of hot rolling on the alloys is limited, but the alloys keep good plasticity.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Properties of the Cold-Rolled Mg-14Li-1Zn Alloy after Hot Rolling

et al. 2019

Advances in Materials Science and Engineering

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The as-cast Mg-14Li-1Zn alloy was hot rolled at different temperatures with the reduction of 50%, followed by cold rolling with the reduction of 80%. The effects of the hot rolling temperature on the microstructure and mechanical properties of the final specimens were investigated. The results show that the higher rolling temperature brings about a more homogeneous microstructure, which is favorable for the subsequent cold rolling. When the hot rolling temperature is 300°C, the final specimen possesses the highest tensile strength and hardness of 238 MPa and 67.7 HV, respectively. When the hot rolling temperature is 200°C, the final specimen possesses the highest elongation of 24.6%.

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Section: Resultsmentioning

confidence: 91%

Section: Data Availabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Properties of the Cold-Rolled Mg-14Li-1Zn Alloy after Hot Rolling

et al. 2019

Advances in Materials Science and Engineering

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“…Among those significant superiorities, its lower density is the most brilliant feature, which is 1/4–1/3 lighter than that of ordinary magnesium alloys, and almost 1/2 of aluminum alloys. [ 1–5 ]…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolution and Mechanical Properties of As‐Cast and As‐Extruded Mg–14Li Alloy with Different Zn/Y and Zn/Gd Addition

et al. 2020

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Magnesium-lithium alloy is the lightest metal engineering material, which possesses broad applications in the domains of aviation industries and military affairs because of its remarkable advantages, such as perfect electromagnetic shielding, damping properties, and superhigh specific stiffness and strength. Among those significant superiorities, its lower density is the most brilliant feature, which is 1/4-1/3 lighter than that of ordinary magnesium alloys, and almost 1/2 of aluminum alloys. [1-5] In addition, there exists an interest and important structure transformation from hexagonal close-packed (hcp) to bodycentered cubic (bcc) with the increasing Li content in binary Mg-Li alloys, which can reduce the crystal parameter (c/a ratio) of α-Mg and activate more non-basal slip systems. When the mass fraction of Li contents is more than 5.7 wt%, Mg-Li alloy presents a typical duplex-phase structure, which consists of α-Mg (hcp) and β-Li (bcc) phases. Moreover, when Li contents exceed 10.3 wt%, the microstructure of the alloy will be transformed from the duplex phase (α þ β) to single phase (β). [6-12] LA141 (Mg-14Li-1Al) is a kind of superlight alloy (1.333 g cm À3) among the commercial Mg-Li alloys. However, its wide uses are limited by existing problems involving low strength, weak anti-corrosion, and worse age hardening stability. Therefore, it has great significance to improve the performance of the superlight Mg-14Li-based alloy. [13-16] Optimal alloying addition might offer an attractive alternative. Shechtman was the first to discover quasicrystals in magnesium alloys in 1984. The atomic arrangement of quasicrystals is quite different from that of traditional crystals and amorphous alloys, which can significantly improve the comprehensive properties of magnesium alloys. [17-23] In recent years, the idea of quasicrystalline strengthening has been used for reference in the study of Mg-Li alloys. The addition of rare earth elements (RE), such as Y and Gd, to Mg-Li-Zn alloys can produce quasicrystalline strengthening phases with hightemperature stability and other kinds of mesophase strengthening matrices. In addition, Y and Gd have relatively higher solid solubility in the α-Mg matrix. [24] However, there are few reports about the strengthening effect of Zn/Y and Zn/Gd addition on Mg-Li alloy with single β-Li phase. Accordingly, elements Zn, Y, and Gd were added to the chosen Mg-14Li-based alloy. Therefore, Mg-14Li-2Zn-1Y (named LZY1421), Mg-14Li-3Zn-1Y (named LZY1431), Mg-14Li-6Zn-2Y (named LZY1462) and Mg-14Li-2Zn-1Gd (named LZG1421), Mg-14Li-3Zn-1Gd (named LZG1431), Mg-14Li-6Zn-2Gd (named LZG1462) alloys were prepared as

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High‐Cycle Fatigue Behavior of Deep Cryogenic–Elevated Temperature Cycling Treated Sand‐Cast Mg–6Gd–3Y–0.5Zr Alloy

Liu

Wen

Meng³

et al. 2021

Adv Eng Mater

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Herein, the high‐cycle fatigue behavior of the sand‐cast Mg–6Gd–3Y–0.5Zr (VW63Z) alloy is investigated. Deep cryogenic–elevated temperature cycling (DCETC) treatment is used to simulate the thermal cycling in space. The results indicate that the DCETC treatment can influence the high‐cycle fatigue performance of the sand‐cast VW63Z alloy. Especially, the fatigue strength of the VW63Z alloy in T6 state is improved to 140 MPa after three DCETC cycles. The changes in fatigue performance arise from the transformation of β′ phases in the DCETC treatment process. In addition, the formation and propagation of the fatigue crack during high‐cycle fatigue test are also studied systematically.

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Effects of Cold Rolling on Microstructural Evolution and Mechanical Properties of Mg–14Li–1Zn Alloy

Cited by 12 publications

References 24 publications

Microstructure and Mechanical Properties of the Cold-Rolled Mg-14Li-1Zn Alloy after Hot Rolling

Microstructure and Mechanical Properties of the Cold-Rolled Mg-14Li-1Zn Alloy after Hot Rolling

Microstructural Evolution and Mechanical Properties of As‐Cast and As‐Extruded Mg–14Li Alloy with Different Zn/Y and Zn/Gd Addition

High‐Cycle Fatigue Behavior of Deep Cryogenic–Elevated Temperature Cycling Treated Sand‐Cast Mg–6Gd–3Y–0.5Zr Alloy

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