Study on the Effect of T6 Heat Treatment on the Properties of Friction Surfacing AA7075 Aluminum Alloy Coatings

IF 3.4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Engineering Materials Pub Date : 2025-02-27 DOI:10.1002/adem.202402824

Xueming Hao, Xuemei Liu, Dongting Wu, Yong Zou, Hui Zheng, Xun Lv

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Abstract

Friction surfacing is an advanced solid-state forming technology, which is widely used in many fields, such as repairing and remanufacturing. This study investigates the effect of T6 heat treatment on the properties of the friction surfacing coating of AA7075 aluminum alloy. First, the AA7075 aluminum alloy friction surfacing coating is fabricated, and its microstructure, hardness, tensile properties, and corrosion resistance are systematically analyzed. Subsequently, the coating undergoes T6 heat treatment, and the performance changes before and after the heat treatment are compared. The results of the study show that after T6 heat treatment, the grain size of the friction surfacing coating increases by ≈28% compared to the untreated coating, but the grain size remains finer than that of the original rod material. Compared to the untreated coating, the tensile strength of the heat-treated coating increases by 14%, and the elongation improves significantly by 101%, reaching 84 and 213% of the original rod material, respectively. In terms of corrosion resistance, the corrosion rate of the heat-treated coating decreases compared to the untreated sample, indicating that T6 treatment enhances the corrosion resistance of the coating.

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摩擦堆焊是一种先进的固态成形技术，广泛应用于维修和再制造等多个领域。本研究探讨了 T6 热处理对 AA7075 铝合金摩擦堆焊涂层性能的影响。首先，制作了 AA7075 铝合金摩擦表面涂层，并对其微观结构、硬度、拉伸性能和耐腐蚀性能进行了系统分析。随后，对涂层进行 T6 热处理，比较热处理前后的性能变化。研究结果表明，经过 T6 热处理后，摩擦堆焊涂层的晶粒尺寸比未经处理的涂层增大了 ≈28%，但晶粒尺寸仍比原始棒材细。与未经处理的涂层相比，热处理涂层的抗拉强度提高了 14%，伸长率显著提高了 101%，分别达到原始棒材材料的 84% 和 213%。在耐腐蚀性方面，与未处理的样品相比，热处理涂层的腐蚀率有所下降，这表明 T6 处理增强了涂层的耐腐蚀性。

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来源期刊

Advanced Engineering Materials 工程技术-材料科学：综合

CiteScore

5.70

自引率

5.60%

发文量

544

审稿时长

1.7 months

期刊介绍： Advanced Engineering Materials is the membership journal of three leading European Materials Societies - German Materials Society/DGM, - French Materials Society/SF2M, - Swiss Materials Federation/SVMT.