Corrosion Science最新文献

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Simultaneous improvement of mechanical properties and corrosion resistance of D019-strengthened high-entropy alloys via tailored microstructures 通过定制组织提高d019强化高熵合金的力学性能和耐蚀性
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-16 DOI: 10.1016/j.corsci.2025.113193
Xier Luo , Jianyang Zhang , Tzu-hsiu Chou , Jie Gan , Jiang Ju , Yinghao Zhou , Tao Yang
{"title":"Simultaneous improvement of mechanical properties and corrosion resistance of D019-strengthened high-entropy alloys via tailored microstructures","authors":"Xier Luo ,&nbsp;Jianyang Zhang ,&nbsp;Tzu-hsiu Chou ,&nbsp;Jie Gan ,&nbsp;Jiang Ju ,&nbsp;Yinghao Zhou ,&nbsp;Tao Yang","doi":"10.1016/j.corsci.2025.113193","DOIUrl":"10.1016/j.corsci.2025.113193","url":null,"abstract":"<div><div>To develop corrosion-resistant alloys with superior mechanical properties, we have successfully designed a novel D0<sub>19</sub>-strengthened high-entropy alloy (HEA) with tailored microstructures. By introducing dispersive granular D0<sub>19</sub> phases, the directional lamellar and granular structured (DLGS) alloy showed improved mechanical properties (from 420 to 870 MPa) and nobler pitting potentials (from 183 to 384 mV<sub>SCE</sub>) than the traditional non-directional lamellar structured (NDLS) D0<sub>19</sub>-strengthened counterpart. We found that the increased localized corrosion resistance of DLGS alloy was attributed to the higher content of Cr<sub>2</sub>O<sub>3</sub> and Fe<sub>2</sub>O<sub>3</sub> in the passive film and a lower tendency of galvanic corrosion. Meanwhile, the expanded proportion of hydroxides within the passive film and the rapid dissolution kinetics in the transpassive region increased the pitting susceptibility of the NDLS alloy.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113193"},"PeriodicalIF":7.4,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665852","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}
引用次数: 0
Mechanisms of water chemistry on oxide microstructures in zirconium alloy corrosion: A comparative study via PED-EELS 水化学对锆合金腐蚀中氧化物微观结构的影响机制:基于PED-EELS的比较研究
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-16 DOI: 10.1016/j.corsci.2025.113189
Qingdong Liu , Fengxin Zheng , Jianchao Peng , Jing Hu , Qifeng Zeng , Yi Zhao , Jianfeng Gu , Hiroaki Abe
{"title":"Mechanisms of water chemistry on oxide microstructures in zirconium alloy corrosion: A comparative study via PED-EELS","authors":"Qingdong Liu ,&nbsp;Fengxin Zheng ,&nbsp;Jianchao Peng ,&nbsp;Jing Hu ,&nbsp;Qifeng Zeng ,&nbsp;Yi Zhao ,&nbsp;Jianfeng Gu ,&nbsp;Hiroaki Abe","doi":"10.1016/j.corsci.2025.113189","DOIUrl":"10.1016/j.corsci.2025.113189","url":null,"abstract":"<div><div>The corrosion behaviors of a Zr-0.45 Sn-0.38 Nb-0.30 Fe-0.05 Cu-0.015 Si-0.13 O alloy (wt%) was studied after exposure for 300 days in 360 ℃/18.6 MPa pure water, lithiated water and dissolved oxygen (DO) water, respectively. Transmission electron microscopy (TEM) with precession electron diffraction (PED) and electron energy loss spectroscopy (EELS) revealed critical differences in oxide microstructure, texture, and compositional variants across the oxide/metal (O/M) interface. Results demonstrate that Li⁺ induces premature corrosion transition by disrupting columnar grain morphology, increasing grain boundary density, and therefore accelerating O<sup>2-</sup> diffusion. In contrast, DO significantly enhanced initial corrosion rate, leading to distorted oxide grains and weakened texture due to rapid oxide growth. Hexagonal ZrO (h-ZrO) suboxide layer at the O/M interface were observed in both lithiated and DO water oxide, with their formation linked to corrosion stage and stress level. Stress-driven texture evolution exhibited periodicity in pure and lithiated water oxides but was absent in DO water due to high grain distortion and suppressed corrosion transition. These findings highlight the critical roles of water chemistry and stress in governing zirconium alloy corrosion mechanisms, offering insights for optimizing nuclear fuel cladding performance in water-cooled reactors.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113189"},"PeriodicalIF":7.4,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655368","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}
引用次数: 0
The effect of pH agents on corrosion and low cycle fatigue behaviors of 316L stainless steel in boron-free small modular reactor environments pH剂对316L不锈钢在无硼小型模块化反应器环境下腐蚀和低周疲劳行为的影响
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-16 DOI: 10.1016/j.corsci.2025.113196
Hasan Izhar Khan, Hyeon Bae Lee, Changheui Jang
{"title":"The effect of pH agents on corrosion and low cycle fatigue behaviors of 316L stainless steel in boron-free small modular reactor environments","authors":"Hasan Izhar Khan,&nbsp;Hyeon Bae Lee,&nbsp;Changheui Jang","doi":"10.1016/j.corsci.2025.113196","DOIUrl":"10.1016/j.corsci.2025.113196","url":null,"abstract":"<div><div>Recently, boron-free primary coolant environments have been incorporated into several small modular reactor (SMR) designs, replacing the typical pressurized water reactor (PWR) chemistry based on LiOH and boric acid. In these boron-free SMRs, KOH and NH<sub>3</sub> are considered as alternative pH control agents to replace LiOH. Nonetheless, austenitic stainless steels continue to be widely used as structural materials, as in PWRs, and thus, the assessment of corrosion-related damage in alternative pH agent environments is necessary. This study investigates the corrosion and low-cycle fatigue (LCF) behaviors of 316 L SS in boron-free SMR environments with KOH and NH<sub>3</sub>. Results indicate that the corrosion and LCF behaviors of 316 L SS in these alternative pH agents are comparable to those in the PWR environment. The corrosion and crack tip oxide layer thickness vary between the two test environments, though the behavior of constituent elements remained similar. A comparison of microstructural and mechanical properties among the two tested environments, with the LiOH environment from the literature, is further discussed.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113196"},"PeriodicalIF":7.4,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670515","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}
引用次数: 0
Enhancing corrosion resistance of Ti-coated SUS316L bipolar plates: The role of residual stress and microstructural evolution 增强ti包覆SUS316L双极板的耐蚀性:残余应力和显微组织演变的作用
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-16 DOI: 10.1016/j.corsci.2025.113194
Haechan Jo , Hyorin Moon , Jeongsoo Kim , Dongwoo Lee
{"title":"Enhancing corrosion resistance of Ti-coated SUS316L bipolar plates: The role of residual stress and microstructural evolution","authors":"Haechan Jo ,&nbsp;Hyorin Moon ,&nbsp;Jeongsoo Kim ,&nbsp;Dongwoo Lee","doi":"10.1016/j.corsci.2025.113194","DOIUrl":"10.1016/j.corsci.2025.113194","url":null,"abstract":"<div><div>Enhancing the corrosion resistance of bipolar plates (BPPs) is crucial for improving the durability and efficiency of proton exchange membrane water electrolyzers (PEMWEs). This study investigates the impact of processing conditions on the microstructure, mechanical properties, and corrosion behavior of magnetron sputter deposited titanium (Ti) thin films on SiN<sub>x</sub>/Si and SUS316L substrates. Deposition temperature significantly affected the grain structure and phase transitions, with higher temperatures promoting the formation of a dense HCP phase with improved crystallinity. For Ti films deposited on SUS316L, the thermal expansion mismatch between the film and the substrate induces compressive residual stress in the Ti film, resulting in densification, reduced defect density, and enhanced resistance to plastic deformation and ion infiltration. Ti coatings deposited at elevated temperatures exhibited up to a 60 % increase in pitting potential compared to room-temperature deposited films, highlighting the role of stress-induced densification in mitigating crack formation. By establishing correlations between microstructure, mechanical properties, and corrosion resistance, this study provides insights into optimizing deposition processes and stress management strategies for durable coatings in PEMWEs.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113194"},"PeriodicalIF":7.4,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662688","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}
引用次数: 0
Effect of alternating hydrostatic pressure (AHP) on the corrosion and tribocorrosion behavior of gradient W-DLC coated WC-based cermet 交变静水压力对梯度W-DLC涂层wc基陶瓷腐蚀和摩擦腐蚀行为的影响
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-15 DOI: 10.1016/j.corsci.2025.113190
Yingpeng Zhang , Yalan Zhang , Lei Li , Hao Li , Peng Guo , Aiying Wang
{"title":"Effect of alternating hydrostatic pressure (AHP) on the corrosion and tribocorrosion behavior of gradient W-DLC coated WC-based cermet","authors":"Yingpeng Zhang ,&nbsp;Yalan Zhang ,&nbsp;Lei Li ,&nbsp;Hao Li ,&nbsp;Peng Guo ,&nbsp;Aiying Wang","doi":"10.1016/j.corsci.2025.113190","DOIUrl":"10.1016/j.corsci.2025.113190","url":null,"abstract":"<div><div>Marine hydraulic components (e.g., seawater piston pumps) continuously endure coupled high hydrostatic pressure, electrochemical corrosion, and tribological degradation during prolonged operation, significantly compromising equipment stability and longevity. While WC-20Cr<sub>3</sub>C<sub>2</sub>-7Ni/W-DLC (WC/W-DLC) duplex coatings demonstrate improved tribocorrosion resistance for metal substrates, their long-term performance under extreme deep-sea conditions remains insufficiently characterized, particularly regarding high-pressure tribocorrosion mechanisms. In this work, the long-term corrosion and tribocorrosion properties of the coatings were evaluated using an autoclave equipped with an in-situ electrochemical monitoring system in a 20 MPa alternating hydrostatic pressure (AHP) environment. The results showed that the corrosion resistance of the WC/W-DLC coating was always superior to that of the WC-based coating during AHP cyclic immersion. It was attributed to the barrier of the structurally stable W-DLC layer against the corrosive solution and Cl-adsorption. The tribocorrosion results after AHP cycling revealed that the bonding between WC grains was weakened due to the corrosion of the Ni binder phase. Therefore, WC grains were pulled out and exfoliated during the sliding process, causing relatively severe failure of the WC-based coating. In contrast, the duplex coating, featuring a structurally stable and strongly bonded W-DLC layer, exhibited a coefficient of friction (COF) and wear rate of only 0.067 and 4.71 × 10<sup>−8</sup> mm<sup>3</sup>/N·m after sliding for 1200 m. Additionally, the potential drop induced by sliding was only 5 mV, significantly lower than that of the WC-based coating (↓159 mV). In short, the optimized WC/W-DLC duplex coating can provide excellent and consistent surface protection for metal parts in deep-sea environments.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113190"},"PeriodicalIF":7.4,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655362","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}
引用次数: 0
Hydrogenation influence on crack initiation and fretting corrosion mechanism of zirconium alloy under partial slip regime in high temperature pressurized water environment 高温加压水环境下部分滑移状态下锆合金加氢对裂纹萌生及微动腐蚀机理的影响
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-14 DOI: 10.1016/j.corsci.2025.113178
L.Z. Kang, Y.H. Lu, Z.J. Shi, L. Xin, Y.M. Han
{"title":"Hydrogenation influence on crack initiation and fretting corrosion mechanism of zirconium alloy under partial slip regime in high temperature pressurized water environment","authors":"L.Z. Kang,&nbsp;Y.H. Lu,&nbsp;Z.J. Shi,&nbsp;L. Xin,&nbsp;Y.M. Han","doi":"10.1016/j.corsci.2025.113178","DOIUrl":"10.1016/j.corsci.2025.113178","url":null,"abstract":"<div><div>Effect of hydrogenation on crack initiation and fretting corrosion mechanism of Zr-alloy under partial slip regime in high temperature pressurized water enviornment were investigated. The results revealed that hydrogenation led to precipitation of δ-hydride within the α-Zr matrix, and more transforamtion from T-ZrO<sub>2</sub> to M-ZrO<sub>2</sub> in the oxide layer of worn surface, which resulted in the formation of microcracks at the δ-hydride / α-Zr interface in tribologically transformed structure (TTS) layer and more microcracks at T-ZrO<sub>2</sub> / M-ZrO<sub>2</sub> interface within oxide layer. As a result, hydrogenation changed the fretting corrosion mechanism from fretting corrosion crack to combination of fretting corrosion crack and adhesive wear, which slightly increased wear volume. For original Zr-alloy, microcracks propagated along the amorphous T-ZrO<sub>2</sub> / M-ZrO<sub>2</sub> interface into the TTS layer under high shear stress at worn scar edge, while for hydrided Zr-alloy, microcracks propagated along the T-ZrO<sub>2</sub> / M-ZrO<sub>2</sub> interface and δ-hydride / α-Zr interface in TTS layer.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113178"},"PeriodicalIF":7.4,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655367","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}
引用次数: 0
Effect of triethanolamine borate on corrosion resistance of hot-rolled mild steels in industrial laminar cooling processes 硼酸三乙醇胺对工业层流冷却过程中热轧低碳钢耐腐蚀性能的影响
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-13 DOI: 10.1016/j.corsci.2025.113186
Muyuan Zhou , Lisong Zhu , Di Pan , Xianlong Luo , Hao Liu , Feijun Qu , Daiyan Zhao , Zhao Xing , Sihai Jiao , Jingru Yan , Zhengyi Jiang
{"title":"Effect of triethanolamine borate on corrosion resistance of hot-rolled mild steels in industrial laminar cooling processes","authors":"Muyuan Zhou ,&nbsp;Lisong Zhu ,&nbsp;Di Pan ,&nbsp;Xianlong Luo ,&nbsp;Hao Liu ,&nbsp;Feijun Qu ,&nbsp;Daiyan Zhao ,&nbsp;Zhao Xing ,&nbsp;Sihai Jiao ,&nbsp;Jingru Yan ,&nbsp;Zhengyi Jiang","doi":"10.1016/j.corsci.2025.113186","DOIUrl":"10.1016/j.corsci.2025.113186","url":null,"abstract":"<div><div>The high chloride ion concentration in laminar cooling water used during hot rolling production can cause pitting corrosion on steel surface. This study investigates triethanolamine borate (TEA-B), an eco-friendly and thermally stable organic inhibitor, for the first time as a corrosion control additive in this process. Mild steel samples were immersed in an industrial water environment containing 0.06 wt% sodium chloride content and different TEA-B concentrations (0–5 wt%) for 30 days. Electrochemical tests, surface characterisation, and immersion experiments were conducted to evaluate the inhibition performance and mechanism. The results revealed that the corrosion rate decreased significantly with increasing TEA-B concentration, reaching a maximum inhibition efficiency of 88 % at TEA-B concentration of 5 wt%. XPS and KPFM analyses confirmed that the corrosion inhibition mechanism is associated with the chemical adsorption of BO3 functional groups onto surface Fe atoms, which suppresses chloride ion-induced metal dissolution and the formation of Fe<sup>2 +</sup> /Fe<sup>3+</sup> oxides and Fe<sup>3+</sup> hydroxides. These findings provide a promising strategy for mitigating chloride ion-induced corrosion in hot-rolled steel during industrial laminar cooling processes.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113186"},"PeriodicalIF":7.4,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632921","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}
引用次数: 0
Hydrogen embrittlement and hydrogen-dislocation interactions in Ni-Cr alloys Ni-Cr合金中的氢脆和氢位错相互作用
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-13 DOI: 10.1016/j.corsci.2025.113180
Qianru Zhang , Chengshuang Zhou , Xianze Meng , Jiaxing Li , Jiabo Chen , Xuantong Lv , Liankui Wu , Fahe Cao , Qingqing Sun
{"title":"Hydrogen embrittlement and hydrogen-dislocation interactions in Ni-Cr alloys","authors":"Qianru Zhang ,&nbsp;Chengshuang Zhou ,&nbsp;Xianze Meng ,&nbsp;Jiaxing Li ,&nbsp;Jiabo Chen ,&nbsp;Xuantong Lv ,&nbsp;Liankui Wu ,&nbsp;Fahe Cao ,&nbsp;Qingqing Sun","doi":"10.1016/j.corsci.2025.113180","DOIUrl":"10.1016/j.corsci.2025.113180","url":null,"abstract":"<div><div>The hydrogen embrittlement (HE) of Ni and Ni-Cr alloys, i.e., Ni-1Cr, Ni-5Cr, Ni-10Cr, and Ni-20Cr, was investigated using slow strain rate tensile tests followed by post-mortem characterization via scanning electron microscope (SEM), electron back scatter diffraction (EBSD), and electron channeling contrast imaging (ECCI). The HE susceptibility of Ni-Cr alloys varied nonmonotonically with the increasing amount of Cr, as the highest HE sensitivity was found for the Ni-10Cr alloy. After H-charging, the fracture surface of Ni-Cr alloys changed from fully ductile dimples to brittle features: quasi-cleavage for Ni-20Cr and intergranular for the rest. The influences of hydrogen on the dislocation collective behavior of Ni-Cr alloys were systematically studied. ECCI observations revealed that dislocation cell structures presented in Ni-1Cr, while dislocation slips in a more planar way were found in Ni-10Cr and Ni-20Cr. H does not alter the type of dislocation structures and has no noticeable impact on dislocation structure evolution in Ni-1Cr, Ni-10Cr, and Ni-20Cr alloys.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113180"},"PeriodicalIF":7.4,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613886","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}
引用次数: 0
The synergistic effect of microstructure evolution on corrosion resistance-mechanical properties of carbon steel/stainless steel cladding tubes during heat treatment 热处理过程中组织演变对碳钢/不锈钢包层管耐蚀力学性能的协同效应
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-13 DOI: 10.1016/j.corsci.2025.113185
Yanming Xia , Dejing Zhou , Weimin Qin , Zhiming Gao , Chuantao Lv , Wenbin Hu
{"title":"The synergistic effect of microstructure evolution on corrosion resistance-mechanical properties of carbon steel/stainless steel cladding tubes during heat treatment","authors":"Yanming Xia ,&nbsp;Dejing Zhou ,&nbsp;Weimin Qin ,&nbsp;Zhiming Gao ,&nbsp;Chuantao Lv ,&nbsp;Wenbin Hu","doi":"10.1016/j.corsci.2025.113185","DOIUrl":"10.1016/j.corsci.2025.113185","url":null,"abstract":"<div><div>The microstructural transformation of stainless steel/carbon steel bimetallic cladding tubes obtained by the novel processing method during heat treatment and its synergistic influence on strength and corrosion resistance were mechanistically investigated. The fraction of martensite in the inner stainless steel is highest in the quenched sample and decreases progressively with increasing quenching and tempering temperature due to martensitic decomposition. Whereas the change in carbide content is completely opposite to the change in martensite fraction. The best corrosion resistance and yield strength are obtained in samples tempered at 580 ℃. The reduced martensite content and unprecipitated carbides in the 580 ℃ tempered samples results in the best corrosion resistance, while the significant precipitation of carbides with the subsequent increase in tempering temperature dominates the decrease in corrosion resistance. The carbide content in the outer carbon steel layer gradually increases with increasing tempering temperature, dominating the weakening of the strengthening effect. The synergistic variation of martensite content in stainless steel and precipitation strengthening effect in carbon steel with quenching and tempering temperature determines the dynamic strain distribution and strength.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113185"},"PeriodicalIF":7.4,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613973","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}
引用次数: 0
The role of discontinuous precipitation in the corrosion process of Cu-Ni-Si alloys: Rebar and firewall effects 不连续沉淀在Cu-Ni-Si合金腐蚀过程中的作用:钢筋和防火墙效应
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-13 DOI: 10.1016/j.corsci.2025.113181
Kalubi Ren , Tong Xiao , Linhan Li , Xianfeng Liao , Zhu Xiao , Zhou Li , Yanlin Jia
{"title":"The role of discontinuous precipitation in the corrosion process of Cu-Ni-Si alloys: Rebar and firewall effects","authors":"Kalubi Ren ,&nbsp;Tong Xiao ,&nbsp;Linhan Li ,&nbsp;Xianfeng Liao ,&nbsp;Zhu Xiao ,&nbsp;Zhou Li ,&nbsp;Yanlin Jia","doi":"10.1016/j.corsci.2025.113181","DOIUrl":"10.1016/j.corsci.2025.113181","url":null,"abstract":"<div><div>It is conventionally believed that discontinuous precipitation exacerbates alloy corrosion, but its corrosion behavior remains unclear. This work investigates the influence of discontinuous precipitation on the corrosion behavior of a Cu-5.0Ni-1.2Si alloy through microstructural characterization and electrochemical testing. The results demonstrate that fibrous δ-Ni₂Si discontinuous precipitation forms after 4 h of aging at 450°C, occupies approximately half of the microstructure by 8 h, and nearly fully dominates the alloy after 12 h. The corrosion resistance ranks as follows: 12 h (0.163 mm·a⁻¹) &gt; 4 h (0.169 mm·a⁻¹) &gt; 8 h (0.182 mm·a⁻¹). During the initial corrosion stage, discontinuous precipitation accelerates Cu₂O formation, promoting faster and thicker growth of the corrosion product film. In later stages, the larger dimensions of discontinuous precipitation enable it to act as \"reinforcing bars\" and \"firewalls\" within the film, inhibiting crack propagation and spallation, which has an unexpected contribution to the corrosion resistance of the alloy.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113181"},"PeriodicalIF":7.4,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632919","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}
引用次数: 0
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