Effect of Mg17Al12 precipitate on corrosion behavior and corrosion anisotropy in AZ91 magnesium alloy

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

Corrosion Science Pub Date : 2025-04-27 DOI:10.1016/j.corsci.2025.112983

Wanjing Wang , Feiya Liu , Na Liu , Chao Chen , Yizhou Li , Zhongyu Cui , Hongzhi Cui

引用次数: 0

Abstract

The present work aims to elucidate the effect of Mg₁₇Al₁₂ precipitates on the corrosion behavior and anisotropy in Mg-Al alloys, along with the underlying mechanisms involved. The corrosion of AZ91 is significantly inhibited, and its corrosion anisotropy undergoes substantial changes following aging treatment. These alterations in corrosion behavior can be attributed to the formation of Mg₁₇Al₁₂ precipitates. The precipitates, along with corrosion products, can form a protective barrier layer resembling a “rebar-and-concrete” structure, which significantly inhibits corrosion in AZ91. Furthermore, the corrosion anisotropy of the aged alloy is related to the morphological difference of precipitates on the different orientated surfaces.

查看原文本刊更多论文

Mg17Al12析出物对AZ91镁合金腐蚀行为及各向异性的影响

本工作旨在阐明Mg17Al12析出物对Mg-Al合金腐蚀行为和各向异性的影响，以及所涉及的潜在机制。时效处理后AZ91的腐蚀受到明显抑制，腐蚀各向异性发生了较大变化。这些腐蚀行为的变化可归因于Mg17Al12沉淀的形成。析出相与腐蚀产物形成类似“钢筋-混凝土”结构的保护屏障层，显著抑制AZ91的腐蚀。时效合金的腐蚀各向异性与不同取向表面析出相的形态差异有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.