Effect of heat treatment on the microstructure and corrosion performance of 2219 Al alloy cold sprayed coatings

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2024-10-22 DOI:10.1016/j.corsci.2024.112526

Huwei Tao, Qifeng Cai, Min Chen, Weicheng Zhang, Geng Cao, Hua Zhang

引用次数: 0

Abstract

This study investigates the influence of different heat treatment conditions on the microstructure and corrosion performance of cold-sprayed coatings on 2219 Al alloy. The results indicate that heat treatment aging effectively improves plastic deformation within the coatings. The direct aging promotes grain refinement, optimization of misorientation angles, which effectively resist the penetration of corrosive media. The coating corrosion initially manifests as pitting corrosion, where interconnected pits lead to particle exposure, initiating intergranular corrosion, and eventually evolving into exfoliation corrosion. The corrosion resistance ranking is as follows: direct aging coatings > solution aging coatings > room temperature coatings > base material.

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热处理对 2219 Al 合金冷喷涂层微观结构和腐蚀性能的影响

本研究探讨了不同热处理条件对 2219 铝合金冷喷涂层微观结构和腐蚀性能的影响。结果表明，热处理时效能有效改善涂层内部的塑性变形。直接时效促进了晶粒细化，优化了错位角，从而有效抵御了腐蚀介质的渗透。涂层腐蚀最初表现为点腐蚀，相互连接的凹坑导致颗粒暴露，引发晶间腐蚀，最终演变为剥离腐蚀。耐腐蚀性排名如下：直接老化涂层；溶液老化涂层；室温涂层；基材。

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

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.