npj Materials Degradation最新文献

The influence of recycling on the localized corrosion susceptibility of extruded AA6063 alloys 再循环对挤压成型的 AA6063 合金局部腐蚀敏感性的影响

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-09-10 DOI: 10.1038/s41529-024-00510-5

Salil Sainis, Dan Persson, Karin Törne, Johan Tidblad, Dominique Thierry

{"title":"The influence of recycling on the localized corrosion susceptibility of extruded AA6063 alloys","authors":"Salil Sainis, Dan Persson, Karin Törne, Johan Tidblad, Dominique Thierry","doi":"10.1038/s41529-024-00510-5","DOIUrl":"10.1038/s41529-024-00510-5","url":null,"abstract":"An approach involving the quantification of microstructure characterized by different techniques such as SEM, EDS, and SKPFM is statistically treated to provide a deeper insight into the influence of recycling AA6063 on localized corrosion susceptibility. Particularly, the intermetallic particles and the two forms of localized corrosion – pitting and intergranular corrosion are systematically documented, measured, and analyzed. Even trace amounts of Cu and Zn introduced into the alloy from recycling had a remarkable effect on the localized corrosion susceptibility. The study found that the initiation and early evolution of the two localized corrosions are in competition, and the predominance of one over the other is closely linked to the composition of the alloy, and microstructure. Recycled variants with higher trace Cu made the alloy more susceptible to pitting attack whereas higher trace Zn is linked with greater IGC susceptibility. The trace amount of higher Zn addition has a particularly beneficial effect on pitting susceptibility as it reduces the likelihood of pitting even in alloys with a higher trace Cu content. The SKPFM results obtained in this study provided a basis for the circumferential pitting susceptibility around intermetallic particles, as a higher volta potential difference (∆V) implied a higher driving force for corrosion. ∆V differences between the different variants were further explained based on trace recycled element distribution in the microstructure.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":null,"pages":null},"PeriodicalIF":6.6,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00510-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermodynamic evaluation of the aerial and aqueous oxidation of Al – Mg, Al – Si and Al – Mg – Si system alloys at 298 K 在 298 K 下对铝-镁、铝-硅和铝-镁-硅系统合金的气态和水态氧化进行热力学评估

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-09-06 DOI: 10.1038/s41529-024-00446-w

Pavel Anatolyevich Nikolaychuk, Ernst Kozeschnik

{"title":"Thermodynamic evaluation of the aerial and aqueous oxidation of Al – Mg, Al – Si and Al – Mg – Si system alloys at 298 K","authors":"Pavel Anatolyevich Nikolaychuk, Ernst Kozeschnik","doi":"10.1038/s41529-024-00446-w","DOIUrl":"10.1038/s41529-024-00446-w","url":null,"abstract":"Aluminum and magnesium are the lightest structural metals, and therefore, various alloys based on them are widely used in both, automotive and aerospace industries. However, aluminum and magnesium are very easily affected by atmospheric and aqueous corrosion, and, therefore, the alloying elements should enhance their corrosion stability. In this work, the thermodynamic analysis of phase and chemical equilibria involving aluminum and magnesium alloys doped with silicon in oxygen–containing air environments, as well as the analysis of chemical and electrochemical equilibria involving these alloys in aqueous environments is conducted. The phase and chemical equiliibria in the Al–Mg, Al–Si, Mg–Si, and Al–Mg–Si systems at 298 K are considered, and the thermodynamic activities of the components of common Al–Mg–Si system alloys are calculated. The invariant chemical equilibria in the systems Al–Mg–O, Al–Si–O, Mg–Si–O at 298 K are considered, the isothermal section of the state diagrams of these systems are plotted, and the oxidation scheme of the Al–Mg–Si system alloys in excess oxygen is proposed. The chemical and electrochemical equilibria in the Al–Mg–Si–H2O system at 298 K are considered and presented in form of the activity – pH and the potential – pH diagrams, and the oxidation of the Al–Mg–Si system alloys in aqueous environments is discussed.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":null,"pages":null},"PeriodicalIF":6.6,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00446-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142160333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Mo and Sn co-regulation on low alloy steel corrosion in tropical marine atmosphere 钼和锡共同调节对热带海洋大气中低合金钢腐蚀的影响

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-09-03 DOI: 10.1038/s41529-024-00507-0

Meihui Sun, Xingyu Xiao, Xuexu Xu, Jiangwen Li, Tan Zhao, Li Gong, Cuiwei Du, Xiaogang Li

{"title":"Effect of Mo and Sn co-regulation on low alloy steel corrosion in tropical marine atmosphere","authors":"Meihui Sun, Xingyu Xiao, Xuexu Xu, Jiangwen Li, Tan Zhao, Li Gong, Cuiwei Du, Xiaogang Li","doi":"10.1038/s41529-024-00507-0","DOIUrl":"10.1038/s41529-024-00507-0","url":null,"abstract":"The influence of co-regulating Mo and Sn on the corrosion resistance of low alloy steel in tropical marine atmospheric was investigated. The combined addition of Mo and Sn has been found to significantly improve the corrosion resistance of low alloy steel, augmenting the protective capabilities of the rust layer. This combined addition promotes the formation of protective compounds like α-FeOOH and FeCr2O4 within the alloy rust layer. Furthermore, it facilitates the conversion of Cr, Ni and Cu into corrosion-resistant oxides such as Cr2O3, NiFe2O4 and CuO, thereby enhancing the density of the rust layer. Additionally, as corrosion progresses over time, higher levels of Sn addition lead to increased Sn content within the inner rust layer, consequently bolstering the protective qualities of the rust layer. This comprehensive understanding sheds light on the synergistic effects of Mo and Sn in fortifying the corrosion resistance of low alloy steel, offering insights for the development of advanced corrosion-resistant materials in marine environments.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":null,"pages":null},"PeriodicalIF":6.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00507-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142137896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrosion of aluminium alloy AA2024-Τ3 specimens subjected to different artificial ageing heat treatments 经不同人工时效热处理的 AA2024-Τ3 铝合金试样的腐蚀情况

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-09-03 DOI: 10.1038/s41529-024-00503-4

Christina Margarita Charalampidou, Nicoleta Siskou, Dimitris Georgoulis, Stavros K. Kourkoulis, Mikhail Zheludkevich, Nikolaos D. Alexopoulos

{"title":"Corrosion of aluminium alloy AA2024-Τ3 specimens subjected to different artificial ageing heat treatments","authors":"Christina Margarita Charalampidou, Nicoleta Siskou, Dimitris Georgoulis, Stavros K. Kourkoulis, Mikhail Zheludkevich, Nikolaos D. Alexopoulos","doi":"10.1038/s41529-024-00503-4","DOIUrl":"10.1038/s41529-024-00503-4","url":null,"abstract":"The effect of artificial-ageing on corrosion behaviour of aluminium alloy (AA)2024-T3 was investigated. The natural ageing which takes place during the aircraft''s lifespan was simulated with isothermal heat-treatments at 190 °C. Electrochemical impedance spectroscopy measurements were performed in different heat-treated specimens to examine the prevailing corrosion mechanisms. Additionally, pre-corroded tensile specimens from different heat-treatment conditions were mechanically tested to assess the corrosion-induced degradation. Different forms of corrosion were revealed in the investigated ageing tempers; intense localized attack was noticed in the initial (T3) and under-aged (UA) tempers. UA condition exhibited the highest susceptibility to corrosion propagation followed by T3, according to the charge transfer resistance RCT and degradation rate of tensile elongation at fracture Af ( ≈ 0.118) and ( ≈ 0.103), respectively. Corrosion-induced degradation rates for the peak-aged (PA) and over-aged (OA) tempers ( ≈ 0.042 and 0.054, respectively) were almost one third of UA, attributed to volume fraction and size of the precipitated second-phase particles.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":null,"pages":null},"PeriodicalIF":6.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00503-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142137894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of reactive transport in the alteration of vitrified waste packages: the MOS model 反应迁移在玻璃化废物包改变中的作用：MOS 模型

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-09-02 DOI: 10.1038/s41529-024-00496-0

Pierre Frugier, Nicole Godon, Yves Minet

{"title":"Role of reactive transport in the alteration of vitrified waste packages: the MOS model","authors":"Pierre Frugier, Nicole Godon, Yves Minet","doi":"10.1038/s41529-024-00496-0","DOIUrl":"10.1038/s41529-024-00496-0","url":null,"abstract":"The MOS model (acronym coming from the French MOdèle Simplifié) was born from the desire to have a simple tool that can quantify the contribution of the diffusive reactive environment to the alteration of a vitrified nuclear waste package in deep geological disposal conditions. In the model, this environmental contribution consists partly of the ability of iron, metallic casing corrosion products, and argillite to consume silicon, and partly of the brake on diffusive transport provided by silicon through the successive layers of environmental material. It is a modeling tool serving as an intermediary between operational modeling for the calculation of the source term from the glass, mathematically more simple and giving higher upper margins, and models that use geochemistry and transport, giving greater accuracy for the interactions between glass and its environment. The goal of the MOS model is to calculate the possible impact of silicon reactive diffusion on the alteration rate within the different layers of material surrounding nuclear glass. This article lists the simplifying hypotheses on which the MOS is based, presents the digital resolution method for an environment consisting of several successive layers with different reactivity and transport properties, and explains the model’s implementation.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":null,"pages":null},"PeriodicalIF":6.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00496-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142137891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Author Correction: Effect of bias potential and dimension on electrochemical migration of capacitors for implantable devices 作者更正：偏置电位和尺寸对植入式设备电容器电化学迁移的影响

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-09-02 DOI: 10.1038/s41529-024-00509-y

Shiyao Du, Feng Li, Flemming Bjerg Grumsen, Rajan Ambat, Ao Tang, Ying Li

引用次数: 0

Corrosion behavior of additively manufactured FeCrAl in out-of-pile light water reactor environments 堆外轻水反应堆环境中添加剂制造的铁铬铝的腐蚀行为

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-08-28 DOI: 10.1038/s41529-024-00499-x

Rajnikant V. Umretiya, Haozheng Qu, Liang Yin, Timothy B. Jurewicz, Vipul K. Gupta, Marija Drobnjak, Michael P. Knussman, Andrew K. Hoffman, Raul B. Rebak

引用次数: 0

Silicon ion radiation as a viable surrogate for emulating neutron radiation damage in silicates 硅离子辐射是模拟硅酸盐中子辐射损伤的可行替代物

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-08-28 DOI: 10.1038/s41529-024-00506-1

Krishna C. Polavaram, Sai Kalyan Evani, Sean M. Drewry, Elena Tajuelo Rodriguez, Mohammed G. Alnaggar, Christopher J. Wetteland, Katharine Page, John S. Popovics, Kurt E. Sickafus, Yann Le Pape, Nishant Garg

{"title":"Silicon ion radiation as a viable surrogate for emulating neutron radiation damage in silicates","authors":"Krishna C. Polavaram, Sai Kalyan Evani, Sean M. Drewry, Elena Tajuelo Rodriguez, Mohammed G. Alnaggar, Christopher J. Wetteland, Katharine Page, John S. Popovics, Kurt E. Sickafus, Yann Le Pape, Nishant Garg","doi":"10.1038/s41529-024-00506-1","DOIUrl":"10.1038/s41529-024-00506-1","url":null,"abstract":"Nuclear power plants are aging around the world, and a precise assessment of irradiation damage in their components is needed. One key component, concrete, and specifically the silicates in its aggregates, can undergo significant expansion upon neutron radiation, which can lead to cracking and, ultimately, structural failure. However, assessing and predicting the extent of damage via neutron radiation is challenging due to reasons such as residual radioactivity and, most importantly, the high time involved. Here, we evaluate whether ion radiation can be a viable surrogate. Specifically, by employing Si2+ ion radiations and a comprehensive multi-modal imaging protocol, we report mineral-specific responses for key silicates such as quartz, albite, anorthite, and microcline. We find that 10 MeV Si2+ ions result in mineral expansions that are remarkably comparable to neutron radiation equivalent expansions (R2 = 0.86, RMSE = 1.29%), opening up pathways towards rapid assessment of silicates subject to irradiation.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":null,"pages":null},"PeriodicalIF":6.6,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00506-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel stacking ensemble learner for predicting residual strength of corroded pipelines 用于预测腐蚀管道残余强度的新型堆叠集合学习器

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-08-26 DOI: 10.1038/s41529-024-00508-z

Qiankun Wang, Hongfang Lu

{"title":"A novel stacking ensemble learner for predicting residual strength of corroded pipelines","authors":"Qiankun Wang, Hongfang Lu","doi":"10.1038/s41529-024-00508-z","DOIUrl":"10.1038/s41529-024-00508-z","url":null,"abstract":"Accurately assessing the residual strength of corroded oil and gas pipelines is crucial for ensuring their safe and stable operation. Machine learning techniques have shown promise in addressing this challenge due to their ability to handle complex, non-linear relationships in data. Unlike previous studies that primarily focused on enhancing prediction accuracy through the optimization of single models, this work shifts the emphasis to a different approach: stacking ensemble learning. This study applies a stacking model composed of seven base learners and three meta-learners to predict the residual strength of pipelines using a dataset of 453 instances. Automated hyperparameter tuning libraries are utilized to search for optimal hyperparameters. By evaluating various combinations of base learners and meta-learners, the optimal stacking configuration was determined. The results demonstrate that the stacking model, using k-nearest neighbors as the meta-learner alongside seven base learners, delivers the best predictive performance, with a coefficient of determination of 0.959. Compared to individual models, the stacking model also significantly improves generalization performance. However, the stacking model’s effectiveness on low-strength pipelines is limited due to the small sample size. Furthermore, incorporating original features into the second-layer model did not significantly enhance performance, likely because the first-layer model had already extracted most of the critical features. Given the marginal contribution of model optimization to prediction accuracy, this work offers a novel perspective for improving model performance. The findings have important practical implications for the integrity assessment of corroded pipelines.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":null,"pages":null},"PeriodicalIF":6.6,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00508-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metallic coatings in offshore wind sector—a mini review 海上风电领域的金属涂层--小型回顾

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-08-22 DOI: 10.1038/s41529-024-00480-8

Berenika Syrek-Gerstenkorn, Shiladitya Paul

{"title":"Metallic coatings in offshore wind sector—a mini review","authors":"Berenika Syrek-Gerstenkorn, Shiladitya Paul","doi":"10.1038/s41529-024-00480-8","DOIUrl":"10.1038/s41529-024-00480-8","url":null,"abstract":"Offshore wind energy is pivotal for achieving global renewable energy targets. As of 2022, 12% of global electricity is derived from wind and solar power, with an imperative to reach 90% renewable energy by 2050. The offshore wind industry, constituting 7.1% of global wind power, plays a central role in meeting these goals. The Global Wind Energy Alliance envisions reaching 380 GW by 2030 and 2000 GW by 2050. This paper addresses corrosion challenges in the offshore environment, emphasising sacrificial coatings as an effective mitigation strategy. By critically evaluating the latest revisions of widely used international standards such as Norsok M-501, ISO 12944, and VGBE-S-021, the study focuses on zinc- and aluminium-rich coatings that form a galvanic couple with steel, providing cathodic protection. Liquid coatings, thermally sprayed coatings, and hot-dip galvanised coatings are examined for their applicability with discussion on the advantages and limitations of these systems. Considerations of cost, environmental impact, and testing methods are crucial in selecting corrosion mitigation strategies. The review alludes to these requirements and highlights the significance of durable solutions, such as sacrificial coatings, in ensuring the long-term integrity of offshore wind structures amid the sector’s rapid expansion. Further collaborative research, involving industry and academia, is recommended to refine testing regimes and explore innovative coating solutions.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":null,"pages":null},"PeriodicalIF":6.6,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00480-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0