Transactions of Materials and Heat Treatment

Title：Influence of corrosion and temperature cycle on mechanical properties for 6061 aluminum alloy

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ClassificationCode：TG146.2

year,vol(issue):pagenumber：2022,47(7):243-252

Abstract：

In order to reasonably describe the stress flow behavior of 6061 aluminum alloy under corrosion and temperature cycling, the influences of corrosion and temperature cycling on the mechanical properties of 6061 aluminum alloy were discussed by the combination of theoretical research, experimental tests and finite element simulation. The experimental results show that both corrosion and temperature cycling can lead to the reduction of yield strength and tensile strength for 6061 aluminum alloy. The higher the concentration of corrosive solution is, the more the times of temperature cycles is, and the more obvious the downward trend of mechanical properties for the material is. By comparing the stress-strain curves under different corrosion and temperature cycling conditions, the Johnson-Cook constitutive model is revised and various coefficients are calibrated, and the revised constitutive model considering corrosion and temperature cycling is obtained. The theoretical model is in good agreement with the experimental tests and finite element results. Based on the constitutive model, the influences of corrosion time, corrosion concentration and temperature cycle on the mechanical properties of 6061 aluminum alloy are discussed.

Funds：

国家自然科学基金资助项目(11502284)；中科院重点部署项目(KFZD-SW-435)；中央高校基本科研业务费(3122020077)

作者简介：刘兵飞(1985-)，男，博士，副教授 E-mail：bingfeiliu2@126.com

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