The precipitation behavior of natural aging for Al-Cu-Li alloy after homogenization

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2024-11-24 DOI:10.1016/j.vacuum.2024.113878

Fuyuan Liu , Guantao Wang , Enyu Guo , Zhirou Zhang , Zongning Chen , Huijun Kang , Yanjin Xu , Tongmin Wang

引用次数: 0

Abstract

The effects of natural aging (NA) on microstructure and mechanical properties of as-homogenized Al-4.1Cu-1.3Li-0.4Mg-0.4Ag-0.3Mn-0.5Zn-0.1Zr alloy are investigated in this work. The results show that the alloy exhibits a strong NA response attributed to a plethora of GP-Li zones and δ′ precipitated during the initial 3 days which provides nucleation sites for the T₁ phase. After 15 days, the mechanical properties dramatically enhance due to the precipitation of the saturated GP-Li zones, δ′, and T₁ phases. The yield strength, ultimate tensile strength, and fracture elongation reach 316 MPa, 469 MPa, and 14 % after NA for 15 days, respectively.

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均质化后铝铜锂合金自然时效的析出行为

本文研究了自然时效（NA）对均质化铝-4.1Cu-1.3Li-0.4Mg-0.4Ag-0.3Mn-0.5Zn-0.1Zr 合金的微观结构和机械性能的影响。结果表明，合金表现出强烈的 NA 反应，这归因于大量 GP-Li 区和δ′在最初 3 天内析出，为 T1 相提供了成核点。15 天后，由于饱和 GP-Li 区、δ′ 和 T1 相的析出，机械性能显著提高。NA 15 天后，屈服强度、极限拉伸强度和断裂伸长率分别达到 316 兆帕、469 兆帕和 14%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.