Superior mechanical properties and microstructural evolution of powder metallurgy 2195 Al-Li alloy subjected to hot extrusion

Qi, Miao; Chen, Cunguang; Wei, Jiashu; Mei, Xingyuan; Sun, Chunfang; Su, Guoping; Zhang, Chenzeng; Yan, Mengjie; Yang, Fang; Guo, Zhimeng

doi:10.1016/j.jallcom.2023.171184

Cited by 12 publications

(1 citation statement)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reactivity of lithium at elevated temperatures, resulting in the generation of pores and the loss of the element, introduces variations in density, alongside documented grain growth and a reduction in mechanical strength [36]. Qi et al's study [37] suggests that aluminum-lithium alloys fabricated through powder metallurgy necessitate post-treatment, such as hot extrusion, to enhance density. This is attributed to the intrinsic nature of aluminum and the reactivity of impurities.…”

Section: Calculation Of Relative Density Using the Archimedes Methodsmentioning

confidence: 99%

Effect of Sintering Temperature on Phase Formation and Mechanical Properties of Al–Cu–Li Alloy Prepared from Secondary Aluminum Powders

Cañadilla,

Sanhueza,

Montalba

et al. 2023

Metals

View full text Add to dashboard Cite

Aluminum and its alloys are very versatile materials used in a wide range of applications due to the initial characteristics of pure aluminum and the combination of properties obtained from its blend with other elements. Considering that aluminum is the second-most-produced metal after steel, and that its production will increase over time based on the demand to produce products through conventional and additive methodologies, this will lead to an increase in the energy consumed as well as the footprint of carbon generated. It is for this reason that the generation of competitive aluminum alloys must be approached from secondary sources (recycling). To address these environmental issues, in this work, 2070 aluminum alloy (AA2070) samples were manufactured using secondary aluminum powder and compared with the primary aluminum source. The samples were compacted at 700 MPa and sintered at a different range of temperatures between 525 °C and 575 °C. The study includes thermodynamic modeling, microstructure, and mechanical characterization. Microstructure and phases characterization were carried out via scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis, respectively, whereas the mechanical characterization comprised relative density evaluation, hardness, and flexion tests. Results were compared with the calculation of phase stability using Thermo-Calc software 2020a. Based on the results obtained, it can be concluded that the secondary AA2070 optimal sintered temperature, where the components raised the highest mechanical properties and effective relative density range, is 575 °C. Furthermore, the recycled alloys have similar relative densities and flexural strengths than the corresponding alloys made from primary aluminum powder.

show abstract

Section: Calculation Of Relative Density Using the Archimedes Methodsmentioning

confidence: 99%

Effect of Sintering Temperature on Phase Formation and Mechanical Properties of Al–Cu–Li Alloy Prepared from Secondary Aluminum Powders

Cañadilla,

Sanhueza,

Montalba

et al. 2023

Metals

View full text Add to dashboard Cite

show abstract

Research Progress of New Generation of Aluminum–Lithium Alloys Alloying

Xiao,

An,

Yang

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

Aluminum‐lithium alloy, being the lightest aluminum‐based alloy, holds significant potential for applications in the aerospace and military sectors. Currently, alloying treatment stands as a crucial method for enhancing the comprehensive performance of aluminum‐lithium alloy. This paper provides an overview of the production process of aluminum‐lithium alloys, encompassing smelting and deformation processing characteristics. Additionally, it outlines the developmental history of the chemical composition for the primary grades of aluminum‐lithium alloy, detailing the copper (Cu) and lithium (Li) content of the main alloying elements. And discusses the influence of various microalloying elements on the alloy’s properties.Additionally, it summarizes the structure, properties, and precipitation morphology of the three primary strengthening phases formed by the alloying of aluminum‐lithium alloys: T1 (Al2CuLi), θ′ (Al2Cu), and δ′ (Al3Li). The analysis also examines the impact of anisotropy on the mechanical properties of the primary dispersion. Finally, the paper addresses the challenges involved in alloying aluminum‐lithium alloys and proposes key research directions for element composition design.This article is protected by copyright. All rights reserved.

show abstract

Improved Multi-Directional Forging Process and Its Effect on Microstructure and Three-Directional Mechanical Properties of 2195 Al-Li Alloy

Tong,

Yi,

et al. 2024

Met. Mater. Int.

View full text Add to dashboard Cite

Superior mechanical properties and microstructural evolution of powder metallurgy 2195 Al-Li alloy subjected to hot extrusion

Cited by 12 publications

References 56 publications

Effect of Sintering Temperature on Phase Formation and Mechanical Properties of Al–Cu–Li Alloy Prepared from Secondary Aluminum Powders

Effect of Sintering Temperature on Phase Formation and Mechanical Properties of Al–Cu–Li Alloy Prepared from Secondary Aluminum Powders

Research Progress of New Generation of Aluminum–Lithium Alloys Alloying

Improved Multi-Directional Forging Process and Its Effect on Microstructure and Three-Directional Mechanical Properties of 2195 Al-Li Alloy

Contact Info

Product

Resources

About