Comparison of microstructure and mechanical properties of Al-Mg-Li-Sc-Zr alloys processed by ingot metallurgy and rapid solidification

Kuang, Quanbo; Wang, Richu; Peng, Chaoqun

doi:10.1016/j.jallcom.2021.160937

Cited by 21 publications

(6 citation statements)

References 43 publications

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“…Moreover, the addition of Zr can bring about similar effects [ 21 , 22 ]. Therefore, the addition of Sc and Zr can substantially improve the mechanical properties of Al-Li alloys [ 23 , 24 ]. Al 3 Sc and Al 3 Zr have approximately +1.5% and +1% lattice mismatch with the matrix, respectively.…”

Section: Resultsmentioning

confidence: 99%

Effect of Rolling Temperature on Microstructure and Properties of Al-Mg-Li Alloy

Xiao

et al. 2022

Materials

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In this study, the effects of hot-rolled processes at different temperatures (420 °C, 450 °C, and 480 °C) and subsequent solid solution and aging treatments on the microstructure, mechanical properties, and corrosion properties of Al-Mg-Li alloys with trace Sc and Zr addition were investigated. The aging treatment of rolled sheets after solid solution treatment could obtain Al3Li particles and Al3(Sc, Zr)/Al3Li core–shell particles to improve the mechanical properties of Al-Mg-Li alloy products effectively. The results showed that, as the rolling temperatures increased from 420 °C to 480 °C, the alloy’s ultimate tensile strengths and yield strengths increased, while the corrosion resistance decreased. The increase in rolling temperature increased the precipitation-free zone (PFZ) width of the alloy, which undermined the corrosion resistance of the alloy. Moreover, elevating the hot rolling temperature changes the texture strength of the alloy. Particularly in the 480 °C hot-rolled sample, the decrease in the Brass texture strength and the increase in the S texture and Copper texture strength led to an increase in the Taylor factor (M). The increase in rolling temperature also raised the number density of the Al3(Sc, Zr)/Al3Li core–shell particles. The presence of such particles not only inhibits grain growth but also changes the strength mechanism from dislocation cutting to Orowan bypassing. Due to the combination effect of grain morphology, texture evolution, and precipitation behavior, the 480 °C hot-rolled sample had the highest properties.

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Section: Resultsmentioning

confidence: 99%

Effect of Rolling Temperature on Microstructure and Properties of Al-Mg-Li Alloy

Xiao

et al. 2022

Materials

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“…Despite a reduction in solute concentration in the matrix caused by precipitation, the substantial strengthening noticed after HT can be attributed to nanoscale precipitates formations. Furthermore, the contribution of solid solution strengthening causes a decrease with HT, since the actual microstructural scale length of martensite is larger in the heat-treated samples than in the as printed samples [112].…”

Section: Mechanical Strengthmentioning

confidence: 99%

Influence of in-situ process parameters, post heat treatment effects on microstructure and defects of additively manufactured maraging steel by laser powder bed fusion—A comprehensive review

2024

Phys. Scr.

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The laser powder bed fusion LPBF method in additive manufacturing for metals have proven to produce a final product with higher relative density, when compare to other metal additive manufacturing processes like WAAM, DED and it takes less time even for complex designs. Despite the use of many metal-based raw materials in the LPBF method for production of products. Maraging steel (martensitic steel) is used in aeronautical and aircraft applications in view of its advantages including low weight, high strength, long-term corrosion resistance, low cost, availability, and recyclability. A research gap concerns the selection of design, dimension, accuracy, process parameters according to different grades, and unawareness of various maraging steels other than specific maraging steels. In this comprehensive review, the research paper provides information about on LPBF maraging steel grades, their process parameters and defects, microstructure characteristics, heat treatments, and the resulting mechanical characteristics changes. In addition, detailed information about the aging properties, fatigue, residual and future scope of different maraging steel grades in LPBF for various applications are discussed.

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“…Adding small amounts of lithium (Li) into aluminum (Al) alloys grants a state-of-the-art combination of comprehensive properties (e.g., high specific strength, outstanding weldability, and good anti-corrosion performance) and weight reduction, which has made Al-Li alloy a desirable structural material in the aerospace industry [ 1 , 2 , 3 , 4 , 5 , 6 ]. Similar to Al-Cu-Li alloys, Al-Mg-Li alloys are one of the greatest Al alloy series interested in the aero-industrial application, particularly in the development of ultra-lightweight spacecraft parts that demand further weight decrease, because of their extremely low density [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Beryllium Addition on Microstructure, Mechanical and Corrosion Performance of Al-Mg-Li Alloys

Huang,

Li,

et al. 2023

Materials

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The Al-Mg-Li alloy is ideal for ultra-lightweight aircraft components, and its further performance improvement is of great interest in the aerospace industry. In this study, the effects of various beryllium (Be) additions (Be-free, 0.1, 0.25, 0.50 wt.%) on the microstructure, mechanical, and corrosion performance of the Al-Mg-Li alloys were systematically investigated. The optimal tensile property was obtained in the alloy which added 0.1 wt.% Be with an ultimate tensile strength (UTS), yield strength (YS), and elongation (El) of 530 MPa, 370 MPa, and 9.2%, respectively. Trace Be addition promotes the grain refinement of the as-cast alloy ingot and contributes positive effects to the recrystallization, bringing improvement of the tensile property. Meanwhile, the best anti-corrosion behavior is also presented at 0.1 wt.% Be is added, due to its potential to reduce the width of precipitates free zone (PFZ). As the Be content increases to an excessive level, the comprehensive performance decreases. Therefore, it is strongly recommended that adding trace Be elements into Al-Mg-Li alloys has a positive effect on the comprehensive service performance.

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Comparison of microstructure and mechanical properties of Al-Mg-Li-Sc-Zr alloys processed by ingot metallurgy and rapid solidification

Cited by 21 publications

References 43 publications

Effect of Rolling Temperature on Microstructure and Properties of Al-Mg-Li Alloy

Effect of Rolling Temperature on Microstructure and Properties of Al-Mg-Li Alloy

Influence of in-situ process parameters, post heat treatment effects on microstructure and defects of additively manufactured maraging steel by laser powder bed fusion—A comprehensive review

Effects of Beryllium Addition on Microstructure, Mechanical and Corrosion Performance of Al-Mg-Li Alloys

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