铸态和半固态AZ91D镁合金的腐蚀行为及分形特征

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Pub Date : 2023-04-27 DOI:10.5006/4282

Yang Lei, Yonglai Lai, Kailin Yue, Y. Liu, H. Jin

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引用次数: 0

摘要

铸态和半固态AZ91D镁合金样品分别在蒸馏水中、0.9%氯化钠溶液和3.5%氯化钠溶液中腐蚀不同时间。随着腐蚀时间和腐蚀溶液浓度的增加，合金的腐蚀程度逐渐加深。晶粒细化程度接近球形的半固态合金的耐腐蚀性显著降低，产生更多的腐蚀坑和更高的腐蚀速率。分形分析表明，在相同条件下，半固态合金的腐蚀过程更加均匀。分形理论准确地描述了AZ91D镁合金的腐蚀过程，为更好地了解AZ91D合金的腐蚀行为提供了依据。

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Corrosion research and fractal characteristics of as-cast and semi-solid AZ91D magnesium alloys

As-cast and semi-solid AZ91D magnesium alloys samples were corroded in distilled water, 0.9% NaCl solution and 3.5% NaCl solution for various time, respectively. With the increase of corrosion time and the concentration of corrosion solution, the corrosion degree of the alloys gradually deepened. The corrosion resistance of semi-solid alloy with nearly spherical grain refinement was significantly reduced, resulting in more corrosion pits and higher corrosion rate. According to the fractal analysis, the corrosion process of semi-solid alloy was more uniform under the same conditions. The fractal theory accurately described the corrosion process, further providing a better grasp of the corrosion behavior of AZ91D magnesium alloy.

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来源期刊

Corrosion MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

2.80

自引率

12.50%

发文量

审稿时长

3 months

期刊介绍： CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion. 70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities. Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives: • Contribute awareness of corrosion phenomena, • Advance understanding of fundamental process, and/or • Further the knowledge of techniques and practices used to reduce corrosion.