AUTHOR=Zheng Xingwei , Yin Haohao , Shu Yan , Chu Zhenhua , Liu Zhiwei 

TITLE=The corrosion behavior and tensile strength of the 2060 Al-Li alloy with different heat treatments

JOURNAL=Frontiers in Materials

VOLUME=9

YEAR=2022

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2022.1003204

DOI=10.3389/fmats.2022.1003204

ISSN=2296-8016

ABSTRACT=<p>The structural safety and service life of civil aircraft can be decreased by corrosion damage to their aluminum components caused by long-term service in corrosive conditions. In this work, the effect of heat treatment on corrosion behavior and tensile strength was systematically analyzed for 2060 Al-Li alloy immersed in 3.5 wt% NaCl solution for different corrosion times. The results show that the corrosion depths of the 2060-T4 and 2060-T6 Al-Li alloys immersed for 720 h are 85 and 93 μm, respectively. The ultimate tensile strengths of 2060-T4 and 2060-T6 Al-Li alloys immersed for 720 h were reduced by 5.8 and 6.4%, respectively. Linear relationships between tensile strength and the corrosion depths of 2060-T4 and 2060-T6 Al-Li alloys were established as <inline-formula id="inf1"><mml:math id="m1" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>σ</mml:mi><mml:mrow><mml:mi>r</mml:mi><mml:mi>e</mml:mi><mml:mi>s</mml:mi></mml:mrow></mml:msub><mml:mo>=</mml:mo><mml:mn>486</mml:mn><mml:mo>−</mml:mo><mml:mn>0.33</mml:mn><mml:mi>h</mml:mi></mml:mrow></mml:math></inline-formula> and <inline-formula id="inf2"><mml:math id="m2" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>σ</mml:mi><mml:mrow><mml:mi>r</mml:mi><mml:mi>e</mml:mi><mml:mi>s</mml:mi></mml:mrow></mml:msub><mml:mo>=</mml:mo><mml:mn>547</mml:mn><mml:mo>−</mml:mo><mml:mn>0.35</mml:mn><mml:mi>h</mml:mi></mml:mrow></mml:math></inline-formula> respectively.</p>