两种 2205 双相不锈钢变体点蚀的比较统计分析

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

npj Materials Degradation Pub Date : 2024-03-19 DOI:10.1038/s41529-024-00448-8

Guoyong Ran, Wenrui Tu, Haopeng Dong, Yiming Jiang, Jin Li, Kezhao Liu, Yangting Sun

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引用次数: 0

摘要

由于测试结果可能存在差异，点蚀的固有变异性给准确评估抗点蚀性带来了挑战。本研究比较了两种商用 2205 双相不锈钢的抗点蚀性。与直觉相反的是，点蚀电阻等效数较高的变体显示出较低的临界点蚀温度。通过恒电位脉冲测试和恒电位极化，可以观察到这种变体具有更多的点蚀起始点。利用扫描电子显微镜（SEM）的夹杂物统计进行的进一步研究表明，富含氧化钙的夹杂物增多是造成这一意外现象的根本原因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Comparative statistical analysis of pitting in Two 2205 duplex stainless steel variants

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Comparative statistical analysis of pitting in Two 2205 duplex stainless steel variants

The inherent variability of pitting poses challenges in accurately evaluating the pitting resistance due to potential disparities in test results. This study compares the pitting resistance of two commercial 2205 duplex stainless steels. Counterintuitively, the variant with higher Pitting Resistance Equivalent Number, exhibits a lower Critical Pitting Temperature. Through the potentiostatic pulse test and potentiostatic polarization, this variant is observed to have a greater number of pitting initiation sites. Further investigation, using SEM inclusion statistics, reveals an increased presence of inclusions rich in calcium oxides as the underlying cause of this unexpected phenomenon.

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来源期刊

npj Materials Degradation MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

7.80

自引率

7.80%

发文量

审稿时长

6 weeks

期刊介绍： npj Materials Degradation considers basic and applied research that explores all aspects of the degradation of metallic and non-metallic materials. The journal broadly defines ‘materials degradation’ as a reduction in the ability of a material to perform its task in-service as a result of environmental exposure. The journal covers a broad range of topics including but not limited to: -Degradation of metals, glasses, minerals, polymers, ceramics, cements and composites in natural and engineered environments, as a result of various stimuli -Computational and experimental studies of degradation mechanisms and kinetics -Characterization of degradation by traditional and emerging techniques -New approaches and technologies for enhancing resistance to degradation -Inspection and monitoring techniques for materials in-service, such as sensing technologies