Corrosion Science最新文献_第10页

Influence of Fe micro-alloying and TiB2 reinforcement on the corrosion behavior of high Nb-containing TiAl alloys Fe微合金化和TiB2增强对高含铌TiAl合金腐蚀行为的影响

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-04-19 DOI: 10.1016/j.corsci.2025.112962

Feng Chen , Baofei Liu , Nan Wang , Yangyang Sun , Jie Ding , Hui Chang , Lian Zhou

{"title":"Influence of Fe micro-alloying and TiB2 reinforcement on the corrosion behavior of high Nb-containing TiAl alloys","authors":"Feng Chen , Baofei Liu , Nan Wang , Yangyang Sun , Jie Ding , Hui Chang , Lian Zhou","doi":"10.1016/j.corsci.2025.112962","DOIUrl":"10.1016/j.corsci.2025.112962","url":null,"abstract":"<div><div>To investigate the corrosion behavior of high Nb-containing TiAl alloys, samples of Ti-45Al-8Nb, Ti-45Al-8Nb-0.5 wt% Fe, and Ti-45Al-8Nb-0.5 wt% Fe-2wt% TiB<sub>2</sub> were fabricated via hot isostatic pressing (HIP). The effects of Fe micro-alloying and the combination of Fe micro-alloying with TiB<sub>2</sub> reinforcement on the corrosion properties of TiAl alloys were explored. The results revealed that the introduction of Fe caused significant lattice distortion in the γ-TiAl phase, while the presence of TiB<sub>2</sub> particles hindered the formation of a dense passive film on the sample surface. However, both Fe micro-alloying and TiB<sub>2</sub> reinforcement led to a notable reduction in the size of lamellar colony and the width of lamellar layers. The surface of TiAl and TiAl-Fe samples after corrosion was affected by the layered morphology formed by the difference in corrosion resistance between TiAl and Ti<sub>3</sub>Al phases. The addition of Fe element reduced the number of corrosion pits, while TiAl-Fe-TiB<sub>2</sub> was subjected to micro-galvanic corrosion near TiB<sub>2</sub>. The preferential corrosion area appeared, and there were flocculent and granular oxides. As a result, the corrosion current density of the sample decreased progressively from 1.42 × 10<sup>−7</sup> A/cm<sup>2</sup> to 1.05 × 10<sup>−7</sup> A/cm<sup>2</sup>, and further to 9.86 × 10<sup>−8</sup> A/cm<sup>2</sup>. Additionally, the corrosion potential exhibited an anodic shift, increasing from −0.27 V to −0.11 V, and further to −0.09 V, indicating a significant enhancement in the corrosion resistance of the material. This combined effect of lattice distortion and grain refinement was found to impede the diffusion of Cl<sup>-</sup> ions, significantly enhancing the formation rate of the passive film.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"252 ","pages":"Article 112962"},"PeriodicalIF":7.4,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Fatigue crack growth behavior of X80 pipeline girth welded joints in natural gas/mixed hydrogen environment: Experimental and numerical investigations 天然气/混合氢环境下X80管道环焊缝疲劳裂纹扩展行为：实验与数值研究

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-04-18 DOI: 10.1016/j.corsci.2025.112959

Hai Tang , Chengpu Li , Meng Xu , Liangliang Lv , Chen Sun , Baihui Xing , Shimin Qu , Zhengli Hua

{"title":"Fatigue crack growth behavior of X80 pipeline girth welded joints in natural gas/mixed hydrogen environment: Experimental and numerical investigations","authors":"Hai Tang , Chengpu Li , Meng Xu , Liangliang Lv , Chen Sun , Baihui Xing , Shimin Qu , Zhengli Hua","doi":"10.1016/j.corsci.2025.112959","DOIUrl":"10.1016/j.corsci.2025.112959","url":null,"abstract":"<div><div>Fatigue life evaluation of welded joints is essential for structural integrity management in hydrogen-mixed natural gas pipelines. In this study, the fatigue crack growth rate (FCGR) of X80 welded joints was examined in simulated natural gas environments under 12 MPa with hydrogen volume fractions of 0, 10, and 30 %. The experimental results demonstrate that the hydrogen-induced FCGR curve in double logarithmic coordinates exhibits non-linear behavior, comprised of transition and acceleration regimes. The FCGR in different regions of the welded joint ranks from high to low as follows: heat affected zone (HAZ), base metal (BM), and weld metal (WM). The WM exhibits superior hydrogen embrittlement (HE) resistance owing to high density of fine acicular ferrite (AF) microstructure, whereas the HAZ displays the highest HE susceptibility associated with bainitic structures and hard, brittle secondary phases. Based on experimental results, a finite element method was proposed to simulate cross-region fatigue crack growth in welded joints under hydrogen environments, explicitly incorporating region-specific variations in FCGRs across distinct zones of the weldment. The simulation results indicate that the semi-elliptical crack propagates from the WM through the HAZ to the BM, with its morphology transitioning from semi-ellipse to valley shape and then to semi-circle as fatigue cycles increase, resulting in stress concentration at the crack front of the WM zone.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"252 ","pages":"Article 112959"},"PeriodicalIF":7.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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The inhibitory effect of caffeic acid on localized corrosion of LAZ931 Mg alloy 咖啡酸对LAZ931镁合金局部腐蚀的抑制作用

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-04-18 DOI: 10.1016/j.corsci.2025.112949

Di Mei , Yishun Tian , Shuya Mao , Tiancai Kong , Zhipeng Liu , Jinxue Liu , Haitao Xie , Yang Xiao , Liguo Wang , Shijie Zhu , Shaokang Guan

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The role of secondary phases on SCC initiation of Alloy 718 in simulated PWR primary water 二次相对718合金在模拟压水堆一次水中SCC萌生的影响

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-04-17 DOI: 10.1016/j.corsci.2025.112930

Tianyu Zhu , Jiamei Wang , Miao Song , Quanyao Ren , Xi Qiu , Yuanming Li , Chuanbao Tang , Hongpu Yi , Jing Zhang , Wenxi Tian , YU Ang , Xianglong Guo

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Understanding the Al diffusion pathway during atmospheric corrosion of a Mg-Al alloy using atom probe tomography 利用原子探针层析成像技术研究镁铝合金大气腐蚀过程中Al的扩散路径

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-04-16 DOI: 10.1016/j.corsci.2025.112951

Tim M. Schwarz , Nick Birbilis , Baptiste Gault , Ingrid McCarroll

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Study on corrosion fatigue of Ti-6Al-4V alloy under hydrostatic pressure environment in 3.5 % NaCl solution 静水压环境下Ti-6Al-4V合金在3.5 % NaCl溶液中的腐蚀疲劳研究

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-04-16 DOI: 10.1016/j.corsci.2025.112950

Yue Jin , Rui Liu , Yu Cui , R.R.A. Garcia , O.R. Mattos , Fuhui Wang , Li Liu

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Atmospheric corrosion of mild steel under thin oil film: Emulsification, dispersion, and simulation of saline microdroplets in the oil phase 低碳钢在薄油膜下的大气腐蚀：盐微滴在油相中的乳化、分散和模拟

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-04-15 DOI: 10.1016/j.corsci.2025.112942

Xiao-Ze Ma , Xu Wang , Ting Chen , Jia-Chu Yang , Le Shi , Kai Zhu , Xin-Xin Zhang , Wen-Tie Yang , Ze-Hua Dong

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Corrosion behavior of Mg-11Gd-2Zn-0.4Zr alloy before and after heat treatment: Additive manufacturing versus casting Mg-11Gd-2Zn-0.4Zr合金热处理前后的腐蚀行为：增材制造与铸造

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-04-15 DOI: 10.1016/j.corsci.2025.112947

Qingchen Deng , Ziyi Liu , Qianye Wu , Xiyu Li , Xiao Han , Chenyang Ding , Yuhao Jin , Yujuan Wu , Wenjiang Ding , Liming Peng

{"title":"Corrosion behavior of Mg-11Gd-2Zn-0.4Zr alloy before and after heat treatment: Additive manufacturing versus casting","authors":"Qingchen Deng , Ziyi Liu , Qianye Wu , Xiyu Li , Xiao Han , Chenyang Ding , Yuhao Jin , Yujuan Wu , Wenjiang Ding , Liming Peng","doi":"10.1016/j.corsci.2025.112947","DOIUrl":"10.1016/j.corsci.2025.112947","url":null,"abstract":"<div><div>Additive manufacturing of Mg alloys via laser powder bed fusion (LPBF) has garnered increasing interest due to its capacity to produce superior mechanical properties compared to conventional as-cast alloys. However, the corrosion resistance of as-built Mg alloys relative to their as-cast counterparts remains poorly understood. In this study, a high-strength Mg-11Gd-2Zn-0.4Zr (wt.%, GZ112K) alloy is fabricated using both LPBF and semi-continuous casting techniques. The corrosion behavior of both as-built and as-cast alloys is systematically evaluated before and after solution and aging (T4 and T6) heat treatment processes. Electrochemical and immersion tests reveal the following corrosion resistance ranking: As-built < LPBF-T6 < LPBF-T4 < F-T4 < F-T6 < As-cast. The as-built alloy, despite having finer grains and (Mg,Zn)<sub>3</sub>Gd eutectic secondary phase that enhance tensile properties, exhibits poorer corrosion resistance primarily due to the network distribution of (Mg,Zn)<sub>3</sub>Gd along grain boundaries, which lacks a corrosion barrier effect while increasing the cathode-to-anode ratio. During T4 treatment, the (Mg,Zn)<sub>3</sub>Gd phase transforms into blocky X phase along grain boundaries and lamellar long-period stacking ordered (LPSO) structures within the grains, reducing Volta potential differences, thereby improving corrosion resistance. However, the formation of β′ aging precipitates in the LPBF-T6 alloy increases the micro-galvanic corrosion tendency, reducing corrosion resistance. This study underscores the critical role of T4 and T6 heat treatments in optimizing the corrosion resistance of additively manufactured Mg alloys.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"252 ","pages":"Article 112947"},"PeriodicalIF":7.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A combined microstructural, electrochemical and nanomechanical study of the corrosion and passivation properties of a Cr/CrN multilayer coating Cr/CrN多层涂层的腐蚀和钝化性能的显微组织、电化学和纳米力学综合研究

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-04-15 DOI: 10.1016/j.corsci.2025.112943

Ehsan Rahimi , Thijs Nijdam , Adwait Jahagirdar , Esteban Broitman , Arjan Mol

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Unraveling β-NiAl degradation in aluminide coatings: A comparative study of isothermal oxidation and vacuum heat treatment 氧化铝涂层中β-NiAl的降解：等温氧化和真空热处理的比较研究

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-04-15 DOI: 10.1016/j.corsci.2025.112946

Guo-Hui Meng, Shan-Shan Li, Ya-Nan Wang, Pei-Pei Gui, Ming-Yang Zhang, Kai-Yu Guo, Mei-Jun Liu, Guan-Jun Yang

{"title":"Unraveling β-NiAl degradation in aluminide coatings: A comparative study of isothermal oxidation and vacuum heat treatment","authors":"Guo-Hui Meng, Shan-Shan Li, Ya-Nan Wang, Pei-Pei Gui, Ming-Yang Zhang, Kai-Yu Guo, Mei-Jun Liu, Guan-Jun Yang","doi":"10.1016/j.corsci.2025.112946","DOIUrl":"10.1016/j.corsci.2025.112946","url":null,"abstract":"<div><div>Aluminide coatings are essential for protecting gas turbine hot-section components, but their longevity is often limited by the degradation of the protective β-NiAl phase. This study aims to elucidate the fundamental mechanisms driving β-NiAl degradation by comparing its behavior in aluminide coatings deposited on a nickel-based superalloy under isothermal oxidation (1100°C, air) and vacuum heat treatment (1100°C, vacuum) conditions. The results demonstrate conclusively that β-NiAl degradation is primarily caused by coating-substrate interdiffusion, which leads to Ni enrichment within the coating, rather than by Al depletion resulting from the formation of the surface oxide scale. Degradation was observed to initiate preferentially at the coating surface, the interface between coating sublayers, and the coating-substrate interface. Furthermore, thinner coatings exhibited accelerated β-NiAl degradation due to enhanced Ni enrichment resulting from shorter diffusion distances. These findings highlight the importance of managing diffusion processes to enhance coating performance and durability in high-temperature environments.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"251 ","pages":"Article 112946"},"PeriodicalIF":7.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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