Detrimental Effect of Surface Mechanical Grinding on Stress Corrosion Behavior of Monel 400 alloy in Hydrofluoric Acid Vapor

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

Corrosion Pub Date : 2023-07-24 DOI:10.5006/4382

Dai Hailong, S. Shi, C. Guo, Xinfa Chen

{"title":"Detrimental Effect of Surface Mechanical Grinding on Stress Corrosion Behavior of Monel 400 alloy in Hydrofluoric Acid Vapor","authors":"Dai Hailong, S. Shi, C. Guo, Xinfa Chen","doi":"10.5006/4382","DOIUrl":null,"url":null,"abstract":"Surface finish or integrity is always an important problem threatening the safety service of components. In this study, the stress corrosion cracking (SCC) initiation behavior of Monel 400 alloy with different surface working treatments (mechanical grinding (TD specimen and PD specimen) and electrolytic polishing (EP specimen)) in hydrofluoric acid (HF) vapor were compared by conducting slow strain rate test (SSRT) and constant loading test (CLT). Although SSRT can evaluate the enhancement effect of mechanical grinding on SCC susceptibility, it cannot quantify its contribution to the crack initiation stage. The CLT shows the cracking initiation rate of different specimens in order of: EP specimen<TD specimen<PD specimen. For mechanical grinding specimens, local corrosion and cracks are inclined to nucleate at the groove shoulder zone rather groove bottom, which is mainly ascribed to the accumulation of higher corrosion degradation and higher defects at the groove shoulder. As the shoulder edge on the PD specimen is less constrained, it is easier to induce cracking under the synergistic action of stress concentration and preferential corrosion dissolution. While, the shoulder edge of the TD specimen is not a stress concentration position under tensile loading, and the micro-cracks formed by grinding are parallel to the loading direction, which is not conducive to the development of micro-cracks. Therefore, the crack initiation sensitivity of the TD specimen is lower than that of the PD specimen.","PeriodicalId":10717,"journal":{"name":"Corrosion","volume":" ","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.5006/4382","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Surface finish or integrity is always an important problem threatening the safety service of components. In this study, the stress corrosion cracking (SCC) initiation behavior of Monel 400 alloy with different surface working treatments (mechanical grinding (TD specimen and PD specimen) and electrolytic polishing (EP specimen)) in hydrofluoric acid (HF) vapor were compared by conducting slow strain rate test (SSRT) and constant loading test (CLT). Although SSRT can evaluate the enhancement effect of mechanical grinding on SCC susceptibility, it cannot quantify its contribution to the crack initiation stage. The CLT shows the cracking initiation rate of different specimens in order of: EP specimen

查看原文本刊更多论文

表面机械磨削对蒙乃尔400合金在氢氟酸蒸气中应力腐蚀行为的不利影响

表面光洁度或完整性一直是威胁部件安全服务的一个重要问题。本研究通过慢应变速率试验（SSRT）和恒载试验（CLT）比较了不同表面处理（机械研磨（TD试样和PD试样）和电解抛光（EP试样））的蒙乃尔400合金在氢氟酸（HF）蒸汽中的应力腐蚀开裂（SCC）萌生行为。尽管SSRT可以评估机械研磨对SCC敏感性的增强作用，但它不能量化其对裂纹萌生阶段的贡献。CLT显示了不同试样的裂纹萌生速率，其顺序为：EP试样

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 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.

京公网安备 11010802042870号

Book学术文献互助群
群号：481959085