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Related Experiment Video

Updated: Jun 27, 2026

Determining Tribocorrosion Rate and Wear-Corrosion Synergy of Bulk and Thin Film Aluminum Alloys

Determining Tribocorrosion Rate and Wear-Corrosion Synergy of Bulk and Thin Film Aluminum Alloys

Published on: September 11, 2018

Correlation Between T₁ Precipitation and Strength-Corrosion Performance in 2060 Al-Li Alloy.

Juan Yu¹, Zhaohui Feng¹, Guoai Li¹

¹Beijing Engineering Research Center of Advanced Aluminum Alloys and Applications, Beijing Institute of Aeronautical Materials, Beijing 100095, China.

Materials (Basel, Switzerland)

|June 26, 2026

Summary

This summary is machine-generated.

The optimal aging regime for 2060 Al-Li alloy (T8 temper) is 150°C for 32-48 hours, balancing high strength and improved intergranular corrosion (IGC) resistance. This heat treatment enhances microstructure for aerospace applications.

Keywords:

2060 Al–Li alloy T1 precipitation T8 aging treatment intergranular corrosion mechanical properties

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Last Updated: Jun 27, 2026

Determining Tribocorrosion Rate and Wear-Corrosion Synergy of Bulk and Thin Film Aluminum Alloys

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Imaging Corrosion at the Metal-Paint Interface Using Time-of-Flight Secondary Ion Mass Spectrometry

Published on: May 6, 2019

Area of Science:

Materials Science
Metallurgy
Corrosion Science

Background:

Third-generation Al-Li alloys are crucial for aerospace due to their high strength-to-weight ratio.
Optimizing heat treatments is essential to balance mechanical properties and corrosion resistance.
Intergranular corrosion (IGC) remains a significant challenge for Al-Li alloys.

Purpose of the Study:

To determine the optimal aging conditions for 2060 Al-Li alloy (T8 temper) to maximize both strength and resistance to intergranular corrosion (IGC).
To investigate the microstructural evolution and its correlation with mechanical properties and corrosion behavior.
To provide practical guidance for industrial heat treatments of Al-Li alloys for aerospace applications.

Main Methods:

Systematic investigation of microstructure, mechanical properties (yield strength, UTS, elongation), and IGC behavior across various aging conditions.
Microstructural analysis focusing on precipitate evolution (T1 phase: Al2CuLi) and distribution at grain boundaries (GBs).
Corrosion testing to evaluate the shift in corrosion mode and measure pitting depth.

Main Results:

The optimal aging regime identified is 150°C for 32-48 hours for the 3% pre-stretched alloy.
Peak-aged condition (150°C/48h) yields high strength (YS: 521 MPa L, 486 MPa LT; UTS: 541 MPa L, 548 MPa LT) with good elongation.
Corrosion shifts from IGC to pitting (max depth 98.6 μm) due to discontinuous GB precipitates, enhancing localized corrosion resistance.

Conclusions:

The T1 (Al2CuLi) phase is the primary strengthening precipitate.
Discontinuous grain boundary precipitate morphology significantly improves localized corrosion resistance by disrupting anodic dissolution channels.
The findings offer practical heat treatment guidance for safety-critical aerospace components requiring high strength and corrosion resistance.