Pub Date : 2025-01-24DOI: 10.1016/j.corsci.2025.112725
Jiajie Wu , Zhaoqin Chen , Guang Li , Kai Teng , Lin Ge , Yuxi Chen , Lei Li , Qing Qu
This study analyses the role of pH and H2O2 microenvironments accumulated underneath H2O2-producing bacteria and acid-producing fungi and their symbiotic biofilms in material corrosion. The results show that corrosion is driven by the microenvironments beneath the biofilm, that are dependent on species. Mixed bacterial gel-like EPS ensured continuous acidity within the biofilm, which weakened the passivation film and increased metal ion release. H2O2 in the microenvironment affected the bilayer structure of the passivation film, leading to a shift from pitting to uniform corrosion of the Ti-based material. Furthermore, the microenvironmental gradient under the biofilm promoted EET-MIC to some extent.
{"title":"Visualisation and quantification of biofilm-substrate interface microenvironments based on a fungal-bacterial interaction model: An in-depth investigation into microbially mediated corrosion processes","authors":"Jiajie Wu , Zhaoqin Chen , Guang Li , Kai Teng , Lin Ge , Yuxi Chen , Lei Li , Qing Qu","doi":"10.1016/j.corsci.2025.112725","DOIUrl":"10.1016/j.corsci.2025.112725","url":null,"abstract":"<div><div>This study analyses the role of pH and H<sub>2</sub>O<sub>2</sub> microenvironments accumulated underneath H<sub>2</sub>O<sub>2</sub>-producing bacteria and acid-producing fungi and their symbiotic biofilms in material corrosion. The results show that corrosion is driven by the microenvironments beneath the biofilm, that are dependent on species. Mixed bacterial gel-like EPS ensured continuous acidity within the biofilm, which weakened the passivation film and increased metal ion release. H<sub>2</sub>O<sub>2</sub> in the microenvironment affected the bilayer structure of the passivation film, leading to a shift from pitting to uniform corrosion of the Ti-based material. Furthermore, the microenvironmental gradient under the biofilm promoted EET-MIC to some extent.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112725"},"PeriodicalIF":7.4,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176842","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}
Pub Date : 2025-01-23DOI: 10.1016/j.corsci.2025.112729
C.C. Liu , L.M. Zhang , Z. Liu , D.C. Ren , A.L. Ma , Z.X. Liu , Y.G. Zheng
Titanium and its alloys show considerable potential for spent fuel reprocessing characterized by high-temperature HNO3 due to their enhanced corrosion resistance through alloying. This study investigated the effects of Zr alloying on the microstructure and corrosion behavior of Ti-Zr alloys, integrating experimental research with theoretical calculations. The results demonstrated that the addition of Zr increased microstructural disorder, which in turn improved the mechanical properties. Optimal levels of Zr significantly enhanced both the corrosion resistance and the mechanical properties of the alloys. These findings underscored the suitability of Ti-Zr alloys for extremely corrosive environments, making them promising candidates for advanced reprocessing applications.
{"title":"Influence of Zr alloying on the corrosion behavior of Ti-Zr alloys in simulated hot HNO3 reprocessing conditions","authors":"C.C. Liu , L.M. Zhang , Z. Liu , D.C. Ren , A.L. Ma , Z.X. Liu , Y.G. Zheng","doi":"10.1016/j.corsci.2025.112729","DOIUrl":"10.1016/j.corsci.2025.112729","url":null,"abstract":"<div><div>Titanium and its alloys show considerable potential for spent fuel reprocessing characterized by high-temperature HNO<sub>3</sub> due to their enhanced corrosion resistance through alloying. This study investigated the effects of Zr alloying on the microstructure and corrosion behavior of Ti-Zr alloys, integrating experimental research with theoretical calculations. The results demonstrated that the addition of Zr increased microstructural disorder, which in turn improved the mechanical properties. Optimal levels of Zr significantly enhanced both the corrosion resistance and the mechanical properties of the alloys. These findings underscored the suitability of Ti-Zr alloys for extremely corrosive environments, making them promising candidates for advanced reprocessing applications.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112729"},"PeriodicalIF":7.4,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176050","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}
Pub Date : 2025-01-22DOI: 10.1016/j.corsci.2025.112726
Ancang Yang , Jiale Wu , Bin Zhang , Yonghua Duan , Lishi Ma , Mingjun Peng , Shanju Zheng , Lin Su , Mengnie Li
The long-term challenge faced by Sn-0.7Cu eutectic solder is that the addition of alloying elements can lead to a decrease in corrosion performance. Herein, we report a new design scheme for screening Sn-0.7Cu type solders with corrosion resistant genetic elements from 30 alternative elements. The results indicate that economical Al, Zn and Ni are potential candidate genetic elements. After the adding genetic elements, the strain energy decreases. Corrosion cracks are difficult to open, extend, and propagate along the interface. The present findings may provide a feasible strategy for improving the corrosion resistance of multi-element Sn-based alloy solders.
{"title":"Screening corrosion-resistant genetic elements of Sn-0.7Cu solders by high-throughput calculations","authors":"Ancang Yang , Jiale Wu , Bin Zhang , Yonghua Duan , Lishi Ma , Mingjun Peng , Shanju Zheng , Lin Su , Mengnie Li","doi":"10.1016/j.corsci.2025.112726","DOIUrl":"10.1016/j.corsci.2025.112726","url":null,"abstract":"<div><div>The long-term challenge faced by Sn-0.7Cu eutectic solder is that the addition of alloying elements can lead to a decrease in corrosion performance. Herein, we report a new design scheme for screening Sn-0.7Cu type solders with corrosion resistant genetic elements from 30 alternative elements. The results indicate that economical Al, Zn and Ni are potential candidate genetic elements. After the adding genetic elements, the strain energy decreases. Corrosion cracks are difficult to open, extend, and propagate along the interface. The present findings may provide a feasible strategy for improving the corrosion resistance of multi-element Sn-based alloy solders.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112726"},"PeriodicalIF":7.4,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176030","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}
Pub Date : 2025-01-22DOI: 10.1016/j.corsci.2025.112727
Shuang Wang , Weifeng Qian , Tianxiang Xie , Yongnan Chen , Ning Li
Structure and semiconducting properties of corrosion products on plasma electrolyte oxidation (PEO) treated magnesium alloy was investigated with the process of immersion corrosion in 3.5 wt% NaCl solution. It was found that the structure of corrosion products transformed from flaky to dense granular-like, which effectively improved corrosion resistance of PEO coating. At the same time, the generation of corrosion products repaired the oxygen vacancies of original PEO coating, thus inducing semiconducting characters of coating transition from n-type to p-type. This will reduce the adsorption of corrosive ions, and further prolonging protection performance of PEO coating.
{"title":"Effect of corrosion product on corrosion behavior of PEO coating based on its structure and semiconducting properties","authors":"Shuang Wang , Weifeng Qian , Tianxiang Xie , Yongnan Chen , Ning Li","doi":"10.1016/j.corsci.2025.112727","DOIUrl":"10.1016/j.corsci.2025.112727","url":null,"abstract":"<div><div>Structure and semiconducting properties of corrosion products on plasma electrolyte oxidation (PEO) treated magnesium alloy was investigated with the process of immersion corrosion in 3.5 wt% NaCl solution. It was found that the structure of corrosion products transformed from flaky to dense granular-like, which effectively improved corrosion resistance of PEO coating. At the same time, the generation of corrosion products repaired the oxygen vacancies of original PEO coating, thus inducing semiconducting characters of coating transition from n-type to p-type. This will reduce the adsorption of corrosive ions, and further prolonging protection performance of PEO coating.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112727"},"PeriodicalIF":7.4,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176029","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}
Pub Date : 2025-01-21DOI: 10.1016/j.corsci.2025.112724
Gaofei Wei , Shuduan Deng , Yujie Qiang , Ye Zhang , Xianghong Li
The study of adsorption mechanism of inhibitors has been the focus in the field of corrosion science, and the in-depth investigation of the adsorption mechanism of inhibitor can help to promote the development of new-type green and efficient inhibitors. In this study, the adsorption mechanism of halogenated pyrimidines on steel surface in acidic media was investigated by a comprehensive method combining experiment and theoretical calculations. Inhibitors are prone to protonation reaction in acidic media, and the effect of protonation reaction on adsorption mechanism was investigated in this study through theoretical calculations. Negative synergistic effect between the protonation products and the original molecule indicates the existence of antagonism between the two. The negative synergistic coefficients of 2-chloropyrimidine (CP) (-4.7 % and −2.2 %) are larger than those of 2-bromopyrimidine (BP) (-1.7 % and −0.3 %), and thus the performance of BP is superior to that of CP. Weight loss method, electrochemical test and scanning vibrating electrode technique (SVET) showed that BP has better inhibition performance than CP in acidic media, which is in agreement with the theoretical calculations. First Principle DFT calculations confirmed the formation of parallel adsorption of BP, CP and their protonation products by electron exchange with Fe(110) plane. Surface characterization also confirmed that halogenated pyrimidine molecules could form adsorption films on steel surfaces. BP had the maximum inhibition efficiency of 92.9 % on steel in HCl media. The outcomes of this study may offer significant insights into adsorption mechanism of halogenated pyrimidine derivatives on CRS surfaces.
{"title":"Halogenated pyrimidines as promising inhibitors for cold rolled steel in HCl and H2SO4 media: Experiments and theoretical calculations","authors":"Gaofei Wei , Shuduan Deng , Yujie Qiang , Ye Zhang , Xianghong Li","doi":"10.1016/j.corsci.2025.112724","DOIUrl":"10.1016/j.corsci.2025.112724","url":null,"abstract":"<div><div>The study of adsorption mechanism of inhibitors has been the focus in the field of corrosion science, and the in-depth investigation of the adsorption mechanism of inhibitor can help to promote the development of new-type green and efficient inhibitors. In this study, the adsorption mechanism of halogenated pyrimidines on steel surface in acidic media was investigated by a comprehensive method combining experiment and theoretical calculations. Inhibitors are prone to protonation reaction in acidic media, and the effect of protonation reaction on adsorption mechanism was investigated in this study through theoretical calculations. Negative synergistic effect between the protonation products and the original molecule indicates the existence of antagonism between the two. The negative synergistic coefficients of 2-chloropyrimidine (CP) (-4.7 % and −2.2 %) are larger than those of 2-bromopyrimidine (BP) (-1.7 % and −0.3 %), and thus the performance of BP is superior to that of CP. Weight loss method, electrochemical test and scanning vibrating electrode technique (SVET) showed that BP has better inhibition performance than CP in acidic media, which is in agreement with the theoretical calculations. First Principle DFT calculations confirmed the formation of parallel adsorption of BP, CP and their protonation products by electron exchange with Fe(110) plane. Surface characterization also confirmed that halogenated pyrimidine molecules could form adsorption films on steel surfaces. BP had the maximum inhibition efficiency of 92.9 % on steel in HCl media. The outcomes of this study may offer significant insights into adsorption mechanism of halogenated pyrimidine derivatives on CRS surfaces.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112724"},"PeriodicalIF":7.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176047","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}
Pub Date : 2025-01-20DOI: 10.1016/j.corsci.2025.112722
Zhenguo Hou , Haitao Liu , Weiqiang Li , Chen Chen , Zihao Zhang , Jincan Dong , Weiwei Lu , Qing Feng , Bo Jia , Kexing Song
The fine crystallization and exceptional corrosion resistance of cathode roll titanium are crucial for ensuring the surface quality and service life of high-end ultra-thin electrolytic copper foil. This study presents the preparation of Ti-Sc extremely fine grain cathode roll titanium through a β→α biphase deformation combined with Sc microalloying technique. The influence of trace amounts of Sc on the corrosion behavior of cathode roll titanium was investigated using electrochemical analysis and microstructural characterization. Results indicate that trace Sc significantly enhances the corrosion resistance of cathode roll titanium, with optimal effects observed at an Sc content of 0.1 wt%. The superior corrosion resistance is primarily attributed to the elimination of Fe impurity elements by Sc; The addition of Sc promotes the formation of dense Ti and Sc oxides on the titanium surface; Sc addition mitigates crack formation and propagation in corrosion product films by inhibiting hydrogen evolution at the cathode. This research provides a foundational basis for alloy design in titanium cathode rolls intended for electrolytic copper foil applications.
{"title":"Effect of trace Sc on corrosion behavior of titanium material in cathode roller for electrolytic copper foil","authors":"Zhenguo Hou , Haitao Liu , Weiqiang Li , Chen Chen , Zihao Zhang , Jincan Dong , Weiwei Lu , Qing Feng , Bo Jia , Kexing Song","doi":"10.1016/j.corsci.2025.112722","DOIUrl":"10.1016/j.corsci.2025.112722","url":null,"abstract":"<div><div>The fine crystallization and exceptional corrosion resistance of cathode roll titanium are crucial for ensuring the surface quality and service life of high-end ultra-thin electrolytic copper foil. This study presents the preparation of Ti-Sc extremely fine grain cathode roll titanium through a β→α biphase deformation combined with Sc microalloying technique. The influence of trace amounts of Sc on the corrosion behavior of cathode roll titanium was investigated using electrochemical analysis and microstructural characterization. Results indicate that trace Sc significantly enhances the corrosion resistance of cathode roll titanium, with optimal effects observed at an Sc content of 0.1 wt%. The superior corrosion resistance is primarily attributed to the elimination of Fe impurity elements by Sc; The addition of Sc promotes the formation of dense Ti and Sc oxides on the titanium surface; Sc addition mitigates crack formation and propagation in corrosion product films by inhibiting hydrogen evolution at the cathode. This research provides a foundational basis for alloy design in titanium cathode rolls intended for electrolytic copper foil applications.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112722"},"PeriodicalIF":7.4,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176031","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}
Combining high-pressure heat treatment (HPHT) and artificial aging synergistically enhances the mechanical properties and corrosion resistance of high-Li-content Al-Cu-Li alloys. This study demonstrates that HPHT increases the solubility of Cu in the matrix, reducing intermetallic phase volume and promoting the precipitation of nanoprecipitates that strengthen the alloy. Additionally, it decreases micro-galvanic corrosion between intermetallic phases and the matrix, lowering the corrosion current density by three orders of magnitude compared to the T6-tempered sample, while also enhancing intergranular corrosion (IGC) resistance. Applying HPHT and artificial aging to high-Li-content Al-Cu-Li alloys effectively addresses the strength-corrosion trade-off.
{"title":"Evading the strength-corrosion trade-off in high-Li-content Al-Cu-Li alloy through high-pressure heat treatment and artificial aging","authors":"Hui Zhang , Zhe Yu , Ruizhi Wu , Xiaochun Ma , Xiaoyan Feng , Zhikun Ma , Nodir Turakhodjaev , Sergey Betsofen","doi":"10.1016/j.corsci.2025.112720","DOIUrl":"10.1016/j.corsci.2025.112720","url":null,"abstract":"<div><div>Combining high-pressure heat treatment (HPHT) and artificial aging synergistically enhances the mechanical properties and corrosion resistance of high-Li-content Al-Cu-Li alloys. This study demonstrates that HPHT increases the solubility of Cu in the matrix, reducing intermetallic phase volume and promoting the precipitation of nanoprecipitates that strengthen the alloy. Additionally, it decreases micro-galvanic corrosion between intermetallic phases and the matrix, lowering the corrosion current density by three orders of magnitude compared to the T6-tempered sample, while also enhancing intergranular corrosion (IGC) resistance. Applying HPHT and artificial aging to high-Li-content Al-Cu-Li alloys effectively addresses the strength-corrosion trade-off.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112720"},"PeriodicalIF":7.4,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176032","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}
Pub Date : 2025-01-20DOI: 10.1016/j.corsci.2025.112721
Bei-Bei Wei , Yu-Ting Zhou , Lei Cai , Shi Wang , Xin-Zhe Yu , Lan-Yue Cui , Shuo-Qi Li , Cheng-Bao Liu , Fen Zhang , Wei-Xiang Sun , Yu-Feng Zheng , Rong-Chang Zeng
The effects of Li contents and β-LiZn4 on corrosion behavior of Zn-Li alloys in Hank’s balanced salt solution (HBSS) without synthetic buffer were discussed. The Zn-Li alloys were composed of α-Zn and anodic secondary phase β-LiZn4 and the corrosion rate of the Zn-Li alloys in HBSS was enhanced with increasing Li content. The corrosion products include Zn(OH)2, phosphates (Zn3(PO4)2, Ca3(PO4)2) and Li2CO3 etc. The relationship among grain size, texture and Li content were established, and the influence of Li content on the corrosion mechanism was clarified. The findings provide novel corrosion theory for biodegradable Zn alloys from a material perspective.
{"title":"In vitro degradation mechanism of Zn-Li alloys: Influence of Li content and anodic intermetallic compounds LiZn4","authors":"Bei-Bei Wei , Yu-Ting Zhou , Lei Cai , Shi Wang , Xin-Zhe Yu , Lan-Yue Cui , Shuo-Qi Li , Cheng-Bao Liu , Fen Zhang , Wei-Xiang Sun , Yu-Feng Zheng , Rong-Chang Zeng","doi":"10.1016/j.corsci.2025.112721","DOIUrl":"10.1016/j.corsci.2025.112721","url":null,"abstract":"<div><div>The effects of Li contents and β-LiZn<sub>4</sub> on corrosion behavior of Zn-Li alloys in Hank’s balanced salt solution (HBSS) without synthetic buffer were discussed. The Zn-Li alloys were composed of α-Zn and anodic secondary phase β-LiZn<sub>4</sub> and the corrosion rate of the Zn-Li alloys in HBSS was enhanced with increasing Li content. The corrosion products include Zn(OH)<sub>2</sub>, phosphates (Zn<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>, Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>) and Li<sub>2</sub>CO<sub>3</sub> etc. The relationship among grain size, texture and Li content were established, and the influence of Li content on the corrosion mechanism was clarified. The findings provide novel corrosion theory for biodegradable Zn alloys from a material perspective.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112721"},"PeriodicalIF":7.4,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176053","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}
Pub Date : 2025-01-17DOI: 10.1016/j.corsci.2025.112719
Chuan Guo , Jingchen Wang , Hongxing Lu , Yanmin Wang , Jianing Bai , Gan Li , Yu Yin , Lu Yao , Qiang Zhu , Jian Lu
This study investigated the effects of surface mechanical attrition treatment (SMAT) on the antioxidation performance of additively manufactured Inconel 718 parts. The results show that SMAT generated a nanograin layer near the part surface with high densities of low-angle grain boundaries, plastic strain and lattice distortion. Oxidation resistance was improved owing to that a continuous oxide scale was quickly formed to protect the underlying materials at the early stage of oxidation by the nanosized microstructure. Moreover, adhesion between the oxide scale and the parent alloy was enhanced because of a high level of compressive residual stress induced by SMAT.
{"title":"Enhanced oxidation resistance of additively manufactured Inconel 718 superalloy by surface mechanical attrition treatment","authors":"Chuan Guo , Jingchen Wang , Hongxing Lu , Yanmin Wang , Jianing Bai , Gan Li , Yu Yin , Lu Yao , Qiang Zhu , Jian Lu","doi":"10.1016/j.corsci.2025.112719","DOIUrl":"10.1016/j.corsci.2025.112719","url":null,"abstract":"<div><div>This study investigated the effects of surface mechanical attrition treatment (SMAT) on the antioxidation performance of additively manufactured Inconel 718 parts. The results show that SMAT generated a nanograin layer near the part surface with high densities of low-angle grain boundaries, plastic strain and lattice distortion. Oxidation resistance was improved owing to that a continuous oxide scale was quickly formed to protect the underlying materials at the early stage of oxidation by the nanosized microstructure. Moreover, adhesion between the oxide scale and the parent alloy was enhanced because of a high level of compressive residual stress induced by SMAT.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112719"},"PeriodicalIF":7.4,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-16DOI: 10.1016/j.corsci.2025.112718
Zihan Wu , Chao Wang , Yunkai Wang , Tingzhi Si , Jian Kang , Guo Yuan
In this study, 125 ksi-grade oil casing steels with three chromium and two manganese contents were investigated through orthogonal experiments, and the resulting sulphide stress cracking (SSC) behaviours were analysed using the NACE-A method. The impact of manganese and chromium on the SSC performance was examined through a series of experiments involving microstructural assessments and hydrogen permeation tests. Limiting the chromium and manganese content proved to be pivotal in reducing the quantity of reversible hydrogen traps and Σ3 grain boundaries. Therefore, the proportion of manganese sulphide (MnS) precipitation was reduced, ultimately improving the resistance of the material to SSC.
{"title":"Effects of manganese and chromium on sulfide stress cracking in 125 ksi grade high-strength low-alloyed steel for oil country tubular goods","authors":"Zihan Wu , Chao Wang , Yunkai Wang , Tingzhi Si , Jian Kang , Guo Yuan","doi":"10.1016/j.corsci.2025.112718","DOIUrl":"10.1016/j.corsci.2025.112718","url":null,"abstract":"<div><div>In this study, 125 ksi-grade oil casing steels with three chromium and two manganese contents were investigated through orthogonal experiments, and the resulting sulphide stress cracking (SSC) behaviours were analysed using the NACE-A method. The impact of manganese and chromium on the SSC performance was examined through a series of experiments involving microstructural assessments and hydrogen permeation tests. Limiting the chromium and manganese content proved to be pivotal in reducing the quantity of reversible hydrogen traps and Σ3 grain boundaries. Therefore, the proportion of manganese sulphide (MnS) precipitation was reduced, ultimately improving the resistance of the material to SSC.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112718"},"PeriodicalIF":7.4,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139904","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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