Explore the corrosion behavior of Al-Mg-Si-Cu alloy with various microstructure characteristics through controlling Zener-Hollomon parameter

IF 4.8 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Materials Characterization Pub Date : 2024-09-15 DOI:10.1016/j.matchar.2024.114390

{"title":"Explore the corrosion behavior of Al-Mg-Si-Cu alloy with various microstructure characteristics through controlling Zener-Hollomon parameter","authors":"","doi":"10.1016/j.matchar.2024.114390","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, the microstructure characteristics of Al-Mg-Si-Cu alloy were investigated under various hot deformation Zener-Hollomon parameters. Intergranular and electrochemical corrosion behaviors of solid solution-aged samples with lnZ values of 19.3 to 31.5 were analyzed. The results indicated that the corrosion resistance of the samples initially increased and then decreased as the lnZ value decreased. Precipitates and continuous Cu-rich films on high angle grain boundaries are the primary causes of their susceptibility to corrosion. Conversely, the absence of continuous effective cathodes on low angle grain boundaries is conducive to impeding intergranular corrosion. The Z23 sample (lnZ = 23.1) showed the highest corrosion properties due to its relatively low recrystallization volume fraction of 28.2 % and a higher proportion of low angle grain boundaries in the microstructure. It is promising to enhance the corrosion properties of alloys without compromising mechanical properties by controlling hot deformation parameters.</p></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":null,"pages":null},"PeriodicalIF":4.8000,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Characterization","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S104458032400771X","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CHARACTERIZATION & TESTING","Score":null,"Total":0}

引用次数: 0

Abstract

In this work, the microstructure characteristics of Al-Mg-Si-Cu alloy were investigated under various hot deformation Zener-Hollomon parameters. Intergranular and electrochemical corrosion behaviors of solid solution-aged samples with lnZ values of 19.3 to 31.5 were analyzed. The results indicated that the corrosion resistance of the samples initially increased and then decreased as the lnZ value decreased. Precipitates and continuous Cu-rich films on high angle grain boundaries are the primary causes of their susceptibility to corrosion. Conversely, the absence of continuous effective cathodes on low angle grain boundaries is conducive to impeding intergranular corrosion. The Z23 sample (lnZ = 23.1) showed the highest corrosion properties due to its relatively low recrystallization volume fraction of 28.2 % and a higher proportion of low angle grain boundaries in the microstructure. It is promising to enhance the corrosion properties of alloys without compromising mechanical properties by controlling hot deformation parameters.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

通过控制齐纳-霍洛蒙参数探索具有不同微观结构特征的铝镁硅铜合金的腐蚀行为

本文研究了 Al-Mg-Si-Cu 合金在不同热变形齐纳-霍洛蒙参数下的微观结构特征。分析了 lnZ 值为 19.3 至 31.5 的固溶时效样品的晶间腐蚀和电化学腐蚀行为。结果表明，随着 lnZ 值的降低，样品的耐腐蚀性先是增强，然后减弱。高角度晶界上的沉淀物和连续富铜膜是导致样品易腐蚀的主要原因。相反，低角度晶界上缺乏连续有效的阴极有利于阻碍晶间腐蚀。Z23 样品（lnZ = 23.1）由于再结晶体积分数相对较低，仅为 28.2%，且微观结构中低角度晶界的比例较高，因此显示出最高的腐蚀性能。通过控制热变形参数，有望在不影响机械性能的情况下提高合金的腐蚀性能。

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分钟内获得全文去求助

来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.