Microstructure and localized corrosion properties of 2219 aluminum alloy manufactured by additive friction stir deposition

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

Corrosion Science Pub Date : 2024-10-09 DOI:10.1016/j.corsci.2024.112508

Zikang Wang , Hongchang Qian , Weiwei Chang , Zhihao Yu , Qian Qiao , Min Zhou , Dawei Guo , Dawei Zhang , Chi Tat Kwok , Lap Mou Tam

引用次数: 0

Abstract

Multi-layer 2219 aluminum alloy samples were successfully fabricated using additive friction stir deposition (AFSD). AFSD deposition reduced grain size and the size of intermetallic Al₂Cu particles, but greatly increased the amount of Al₂Cu particles. More Al₂Cu particles increased the number of galvanic microcells on alloy surface and at the grain boundaries, which promoted the localized corrosion and improved the intergranular corrosion sensitivity of AFSD alloy. Subsequent T6 heat treatment had little effect on grain size but enhanced the corrosion resistance of AFSD alloy, primarily attributed to the reduction in Al₂Cu particles and the elimination of dislocations within grains.

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添加式搅拌摩擦沉积法制造的 2219 铝合金的微观结构和局部腐蚀特性

利用添加剂搅拌摩擦沉积（AFSD）成功制备了多层 2219 铝合金样品。AFSD 沉积减小了晶粒尺寸和金属间 Al2Cu 颗粒的尺寸，但大大增加了 Al2Cu 颗粒的数量。更多的 Al2Cu 颗粒增加了合金表面和晶界的电化微电池数量，从而促进了局部腐蚀并提高了 AFSD 合金的晶间腐蚀敏感性。随后的 T6 热处理对晶粒大小影响不大，但却增强了 AFSD 合金的耐腐蚀性，这主要归功于 Al2Cu 颗粒的减少和晶粒内位错的消除。

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.