Pub Date : 2025-02-14DOI: 10.1016/j.corsci.2025.112781
K.W. Kang, A.X. Li, B.R. Zhang, J.S. Zhang, M.K. Xu, D. Huang, S.K. Liu, Y.T. Jiang, G. Li
This study fabricated a series of CoCrFeNi2-based high entropy alloys with L12 precipitates, achieving synergistic improvements in mechanical properties and corrosion resistance. The increase in strength is primarily attributed to precipitation strengthening. Corrosion resistance is improved by the L12 precipitates, which enrich the FCC phase with chromium, thereby enhancing the concentration of Cr2O3 in the passive film. Furthermore, first-principles calculations reveal that the improved corrosion resistance is due to the high work function and the lower surface adsorption energy of L12 precipitates.
{"title":"Synergistic influence of L12 precipitates on the mechanical properties and corrosion resistance of CoCrFeNi2-based high entropy alloys","authors":"K.W. Kang, A.X. Li, B.R. Zhang, J.S. Zhang, M.K. Xu, D. Huang, S.K. Liu, Y.T. Jiang, G. Li","doi":"10.1016/j.corsci.2025.112781","DOIUrl":"10.1016/j.corsci.2025.112781","url":null,"abstract":"<div><div>This study fabricated a series of CoCrFeNi<sub>2</sub>-based high entropy alloys with L1<sub>2</sub> precipitates, achieving synergistic improvements in mechanical properties and corrosion resistance. The increase in strength is primarily attributed to precipitation strengthening. Corrosion resistance is improved by the L1<sub>2</sub> precipitates, which enrich the FCC phase with chromium, thereby enhancing the concentration of Cr<sub>2</sub>O<sub>3</sub> in the passive film. Furthermore, first-principles calculations reveal that the improved corrosion resistance is due to the high work function and the lower surface adsorption energy of L1<sub>2</sub> precipitates.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"247 ","pages":"Article 112781"},"PeriodicalIF":7.4,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419881","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 : 2025-02-12DOI: 10.1016/j.corsci.2025.112778
Zhuocheng Li , Jiashu Li , Wenxiang Zhu , Jingjing Jiao , Bin Wang , Yong Tian , Xu Yang , Lingxu Yang , Huijun Liu , Bingxing Wang
This study examined the influence of tensile deformation on the microstructure evolution and corrosion behaviors of novel nitrogen-containing austenitic stainless steel in a simulated cathode environment for proton exchange membrane fuel cells. The results indicated that at ≤ 30 % deformation, the corrosion resistance was improved with increasing deformation level. This was attributed to dislocations and subgrain refinement promoting the formation of Cr2O3 and CrN, which inhibited F- from attacking the passive film due to lower oxygen vacancy concentrations. At a deformation level of 50 %, excessive dislocations and internal stress decreased the stability of the passive film and consequently reduced the corrosion resistance.
{"title":"Effect of tensile deformation on corrosion behavior of nitrogen-containing stainless steel bipolar plates in a simulated environment for proton exchange membrane fuel cells","authors":"Zhuocheng Li , Jiashu Li , Wenxiang Zhu , Jingjing Jiao , Bin Wang , Yong Tian , Xu Yang , Lingxu Yang , Huijun Liu , Bingxing Wang","doi":"10.1016/j.corsci.2025.112778","DOIUrl":"10.1016/j.corsci.2025.112778","url":null,"abstract":"<div><div>This study examined the influence of tensile deformation on the microstructure evolution and corrosion behaviors of novel nitrogen-containing austenitic stainless steel in a simulated cathode environment for proton exchange membrane fuel cells. The results indicated that at ≤ 30 % deformation, the corrosion resistance was improved with increasing deformation level. This was attributed to dislocations and subgrain refinement promoting the formation of Cr<sub>2</sub>O<sub>3</sub> and CrN, which inhibited F<sup>-</sup> from attacking the passive film due to lower oxygen vacancy concentrations. At a deformation level of 50 %, excessive dislocations and internal stress decreased the stability of the passive film and consequently reduced the corrosion resistance.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"247 ","pages":"Article 112778"},"PeriodicalIF":7.4,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419933","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 : 2025-02-12DOI: 10.1016/j.corsci.2025.112767
Ru Yan , Xiao Zhang , Xiang Gao , Wei He , Houyi Ma
PAM formed by self-organization can be considered as nanocontainers of phytic acid (PA) molecules and used for the corrosion protection of metal materials. Herein, self-strengthening PAM-Zn conversion films were successfully constructed on CRS substrate by a simple dipping method. The highest protection efficiency of PAM-Zn films was 81.0 % and was further increased beyond 90 % after immersion in NaCl solution. The immersion treatment in NaCl solution not only promoted the formation of moreand PAM-Zn complex, but also changed the surface microstructure and increased the film thickness and compactness, thereby leading to the great enhancement of anti-corrosion performance.
{"title":"Self-strengthening phytic acid micelle(PAM)-Zn complex film fabricated on cold rolled steel (CRS) for corrosion protection","authors":"Ru Yan , Xiao Zhang , Xiang Gao , Wei He , Houyi Ma","doi":"10.1016/j.corsci.2025.112767","DOIUrl":"10.1016/j.corsci.2025.112767","url":null,"abstract":"<div><div>PAM formed by self-organization can be considered as nanocontainers of phytic acid (PA) molecules and used for the corrosion protection of metal materials. Herein, self-strengthening PAM-Zn conversion films were successfully constructed on CRS substrate by a simple dipping method. The highest protection efficiency of PAM-Zn films was 81.0 % and was further increased beyond 90 % after immersion in NaCl solution. The immersion treatment in NaCl solution not only promoted the formation of more<span><math><mrow><mi>P</mi><msubsup><mrow><mi>O</mi></mrow><mrow><mn>4</mn></mrow><mrow><mn>3</mn><mo>−</mo></mrow></msubsup></mrow></math></span>and PAM-Zn complex, but also changed the surface microstructure and increased the film thickness and compactness, thereby leading to the great enhancement of anti-corrosion performance.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"247 ","pages":"Article 112767"},"PeriodicalIF":7.4,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419879","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 : 2025-02-12DOI: 10.1016/j.corsci.2025.112777
Kaiwang Chen , Lei Yuan , Qiang Gu , Guoqi Liu , Jingkun Yu , Hongxia Li
The clogging behavior of a new ZrO2-C submerged entry nozzle (SEN) in the industrial production of ultra-low carbon steel was studied. The results revealed that, compared to the Al2O3-C SEN, the clogging thickness at the ZrO2-C SEN outlet was reduced by over 20 % to the formation of a dense protective layer composed of CaO-Al2O3-SiO2 at the interface near the molten steel. Additionally, the corrosion layer formed within the ZrO2-C SEN effectively prevented decarburization and diffusion of CO. The use of the ZrO2-C SEN improved the qualification rate of the liquid level fluctuation and the defect rate of the slab was reduced by approximately 17 %. The related reactions occurring inside the nozzle were simulated and compared with the experimental results in detail.
{"title":"Insights into clogging behavior of Al2O3-C and ZrO2-C submerged entry nozzle during continuous casting of ultra-low carbon steel","authors":"Kaiwang Chen , Lei Yuan , Qiang Gu , Guoqi Liu , Jingkun Yu , Hongxia Li","doi":"10.1016/j.corsci.2025.112777","DOIUrl":"10.1016/j.corsci.2025.112777","url":null,"abstract":"<div><div>The clogging behavior of a new ZrO<sub>2</sub>-C submerged entry nozzle (SEN) in the industrial production of ultra-low carbon steel was studied. The results revealed that, compared to the Al<sub>2</sub>O<sub>3</sub>-C SEN, the clogging thickness at the ZrO<sub>2</sub>-C SEN outlet was reduced by over 20 % to the formation of a dense protective layer composed of CaO-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> at the interface near the molten steel. Additionally, the corrosion layer formed within the ZrO<sub>2</sub>-C SEN effectively prevented decarburization and diffusion of CO. The use of the ZrO<sub>2</sub>-C SEN improved the qualification rate of the liquid level fluctuation and the defect rate of the slab was reduced by approximately 17 %. The related reactions occurring inside the nozzle were simulated and compared with the experimental results in detail.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112777"},"PeriodicalIF":7.4,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403665","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 : 2025-02-11DOI: 10.1016/j.corsci.2025.112776
Zhiyu Du , Rongjian Shi , Zhishan Mi , Zhao Xu , Yujie Zhu , Saiyu Liu , Kewei Gao , Alex A. Volinsky , Xiaolu Pang
Based on hydrogen embrittlement-resistant surface design principles, this study investigates the microstructure and effectiveness of passivation films in blocking hydrogen. Passivation films, prepared by electrochemical methods, consist of outer FeOOH layer and inner layers of Cr2O3 and Fe2O3. The FeOOH layer, with a hydrogen adsorption capacity of −3.555 eV and a diffusion barrier of 3.766 eV, effectively prevents hydrogen penetration. The Cr2O3 and Fe2O3 layers enhance bonding between the films and the substrate as transitional layers. This synergistic structure enhances hydrogen-blocking capabilities, resulting in a 59.92 % reduction in hydrogen embrittlement sensitivity index and a 41.27 % decrease in brittle zone depth.
{"title":"Exploring mechanisms and efficacy of passivation films in blocking hydrogen","authors":"Zhiyu Du , Rongjian Shi , Zhishan Mi , Zhao Xu , Yujie Zhu , Saiyu Liu , Kewei Gao , Alex A. Volinsky , Xiaolu Pang","doi":"10.1016/j.corsci.2025.112776","DOIUrl":"10.1016/j.corsci.2025.112776","url":null,"abstract":"<div><div>Based on hydrogen embrittlement-resistant surface design principles, this study investigates the microstructure and effectiveness of passivation films in blocking hydrogen. Passivation films, prepared by electrochemical methods, consist of outer FeOOH layer and inner layers of Cr<sub>2</sub>O<sub>3</sub> and Fe<sub>2</sub>O<sub>3</sub>. The FeOOH layer, with a hydrogen adsorption capacity of −3.555 eV and a diffusion barrier of 3.766 eV, effectively prevents hydrogen penetration. The Cr<sub>2</sub>O<sub>3</sub> and Fe<sub>2</sub>O<sub>3</sub> layers enhance bonding between the films and the substrate as transitional layers. This synergistic structure enhances hydrogen-blocking capabilities, resulting in a 59.92 % reduction in hydrogen embrittlement sensitivity index and a 41.27 % decrease in brittle zone depth.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"247 ","pages":"Article 112776"},"PeriodicalIF":7.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419877","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 : 2025-02-11DOI: 10.1016/j.corsci.2025.112771
Z. Asemabadi , S. Asemani , H. Eivaz Mohammadloo , A. Mardani Korrani , F. Ghaviahd
Recently, there has been a notable rise in the use of Hydroxyapatite (HA) coatings in medical implants, especially those composed of magnesium alloys. This study involves immersing Mg alloys in a HA and MoS2 solution for varying durations. Results indicated that HA+MoS2 coatings have greater polarization resistance than HA coating, with the 120-minute MoS2-modified coating achieving maximum corrosion resistance (30163 ohm.cm²) in a 3.5 wt% NaCl solution. Characterization techniques confirmed the successful integration of HA and MoS2, while the coatings also exhibited strong antibacterial activity. Additionally after seven days of submerging in SBF, the HA+MoS2(120 min) coating demonstrated the highest bio-corrosion resistance, measuring around 10848 ohm.cm2.
{"title":"Revolutionizing coated implants: Single-step approach hydroxyapatite featuring MoS2 nanosheets integration for anti-bacterial as well as anti-corrosive qualities","authors":"Z. Asemabadi , S. Asemani , H. Eivaz Mohammadloo , A. Mardani Korrani , F. Ghaviahd","doi":"10.1016/j.corsci.2025.112771","DOIUrl":"10.1016/j.corsci.2025.112771","url":null,"abstract":"<div><div>Recently, there has been a notable rise in the use of Hydroxyapatite (HA) coatings in medical implants, especially those composed of magnesium alloys. This study involves immersing Mg alloys in a HA and MoS<sub>2</sub> solution for varying durations. Results indicated that HA+MoS<sub>2</sub> coatings have greater polarization resistance than HA coating, with the 120-minute MoS<sub>2</sub>-modified coating achieving maximum corrosion resistance (30163 ohm.cm²) in a 3.5 wt% NaCl solution. Characterization techniques confirmed the successful integration of HA and MoS<sub>2</sub>, while the coatings also exhibited strong antibacterial activity. Additionally after seven days of submerging in SBF, the HA+MoS<sub>2</sub> <sub>(120 min)</sub> coating demonstrated the highest bio-corrosion resistance, measuring around 10848 ohm.cm<sup>2</sup>.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112771"},"PeriodicalIF":7.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394485","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 : 2025-02-11DOI: 10.1016/j.corsci.2025.112775
C. Oskay , B. Grégoire , T.M. Meißner , B.O. Burek , A. Solimani , M.C. Galetz
Solar salt is currently used in concentrated solar power plants with thermal energy storage. Thermal decomposition of nitrates increases the concentration of oxidizing agents and melt basicity, leading to accelerated corrosion of containment materials. This is further complicated by the impurities in industrial-grade salts. In this study, the corrosion behavior of X20CrMoV12-1, Alloy 800 H, and Haynes-230 is investigated at 600°C in different solar salt mixtures with varying impurity contents. Corrosion mechanisms, including aspects of salt decomposition, impurities, and Cr-dissolution, are discussed in detail. It is proposed that the reactants for oxidation, fluxing, and nitridation are generated from either nitrate or nitrite anions at the alloy/scale interface.
{"title":"In-depth corrosion mechanisms of Fe- and Ni-based alloys in molten solar salt with varying extents of chloride and sulfate impurities","authors":"C. Oskay , B. Grégoire , T.M. Meißner , B.O. Burek , A. Solimani , M.C. Galetz","doi":"10.1016/j.corsci.2025.112775","DOIUrl":"10.1016/j.corsci.2025.112775","url":null,"abstract":"<div><div>Solar salt is currently used in concentrated solar power plants with thermal energy storage. Thermal decomposition of nitrates increases the concentration of oxidizing agents and melt basicity, leading to accelerated corrosion of containment materials. This is further complicated by the impurities in industrial-grade salts. In this study, the corrosion behavior of X20CrMoV12-1, Alloy 800 H, and Haynes-230 is investigated at 600°C in different solar salt mixtures with varying impurity contents. Corrosion mechanisms, including aspects of salt decomposition, impurities, and Cr-dissolution, are discussed in detail. It is proposed that the reactants for oxidation, fluxing, and nitridation are generated from either nitrate or nitrite anions at the alloy/scale interface.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"247 ","pages":"Article 112775"},"PeriodicalIF":7.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419878","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 : 2025-02-11DOI: 10.1016/j.corsci.2025.112774
Xiaoqiang Jiang , Ya Liu , Changjun Wu , Haoping Peng , Junxiu Chen , Xiangying Zhu , Hao Tu , Jianhua Wang , Xuping Su
The effect of surface finishing on the oxidation of Fe-25Ni-20Cr-4Al-based alloy at 1000 °C in an Ar + 4 % H2 + (0.15 %–0.25 %) H2O atmosphere was studied. A multi-layered oxide film formed on the polished samples, while a single-layer Al-rich oxide developed on the ground samples. The low oxidation rate of the ground samples was controlled by Al2O3, while the oxidation rate of the polished samples was influenced by both the interstitial transport mechanism of Cr and the presence of a SiO2 layer. The synergistic effects of surface roughness and oxygen pressure on the early-stage oxidation behavior of alumina-forming austenitic alloys were further explored.
{"title":"Effect of surface finishing on the early-stage oxidation of alumina forming austenitic (AFA) alloys under low oxygen pressure","authors":"Xiaoqiang Jiang , Ya Liu , Changjun Wu , Haoping Peng , Junxiu Chen , Xiangying Zhu , Hao Tu , Jianhua Wang , Xuping Su","doi":"10.1016/j.corsci.2025.112774","DOIUrl":"10.1016/j.corsci.2025.112774","url":null,"abstract":"<div><div>The effect of surface finishing on the oxidation of Fe-25Ni-20Cr-4Al-based alloy at 1000 °C in an Ar + 4 % H<sub>2</sub> + (0.15 %–0.25 %) H<sub>2</sub>O atmosphere was studied. A multi-layered oxide film formed on the polished samples, while a single-layer Al-rich oxide developed on the ground samples. The low oxidation rate of the ground samples was controlled by Al<sub>2</sub>O<sub>3</sub>, while the oxidation rate of the polished samples was influenced by both the interstitial transport mechanism of Cr and the presence of a SiO<sub>2</sub> layer. The synergistic effects of surface roughness and oxygen pressure on the early-stage oxidation behavior of alumina-forming austenitic alloys were further explored.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"247 ","pages":"Article 112774"},"PeriodicalIF":7.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419876","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 : 2025-02-11DOI: 10.1016/j.corsci.2025.112765
Huiyun Tian, Zhongyu Cui, Xiaoyu Qi, Cheng Man, Hongzhi Cui
The tribocorrosion behavior of 7075-T651 aluminum alloy in chloride environment with different pH is investigated. In acidic and alkaline environments, the attack of Cl- and OH- results in the larger wear volume as compared to the neutral environment. The friction coefficient decreases with an increase of load, showing the highest value in alkaline solution. The synergistic effect of corrosion and wear is promoted in alkaline solution, while it is inhibited in the acidic and neutral solutions. At open circuit potential and the anodic potential, the wear mechanisms in acidic and alkaline solutions are corrosion fatigue and adhesive wear.
{"title":"Effect of pH and applied potential on tribocorrosion behavior of 7075-T651 high strength aluminum alloy in chloride environment","authors":"Huiyun Tian, Zhongyu Cui, Xiaoyu Qi, Cheng Man, Hongzhi Cui","doi":"10.1016/j.corsci.2025.112765","DOIUrl":"10.1016/j.corsci.2025.112765","url":null,"abstract":"<div><div>The tribocorrosion behavior of 7075-T651 aluminum alloy in chloride environment with different pH is investigated. In acidic and alkaline environments, the attack of Cl<sup>-</sup> and OH<sup>-</sup> results in the larger wear volume as compared to the neutral environment. The friction coefficient decreases with an increase of load, showing the highest value in alkaline solution. The synergistic effect of corrosion and wear is promoted in alkaline solution, while it is inhibited in the acidic and neutral solutions. At open circuit potential and the anodic potential, the wear mechanisms in acidic and alkaline solutions are corrosion fatigue and adhesive wear.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112765"},"PeriodicalIF":7.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403672","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 : 2025-02-09DOI: 10.1016/j.corsci.2025.112770
Xin Wang, Xiaokai Liang, Shuai Tong, Xinjun Sun
This study investigated the influence of tempering temperature on the microstructural evolution and stress corrosion cracking (SCC) behaviors of a newly developed high-strength mining round-link chain steel. As the tempering temperature increased, the dislocation density progressively decreased, while the amount of (V, Mo)C precipitates significantly increased. After tempering at 625 °C, a substantial number of nanoscale (V, Mo)C precipitates with a certain concentration of carbon vacancies were uniformly distributed. Compared to present commercial high-strength round-link chain steels, the newly developed round-link chain steel demonstrated superior SCC resistance at similar yield strength level. Based on the influence of nano-scale precipitates and dislocation density on hydrogen diffusion characteristics, this study further elucidated the potential mechanisms underlying hydrogen-induced stress corrosion cracking in high-strength round-link chain steel.
{"title":"Influence of tempering temperature on microstructure and stress corrosion crack (SCC) behavior of a new high strength round-link chain steel","authors":"Xin Wang, Xiaokai Liang, Shuai Tong, Xinjun Sun","doi":"10.1016/j.corsci.2025.112770","DOIUrl":"10.1016/j.corsci.2025.112770","url":null,"abstract":"<div><div>This study investigated the influence of tempering temperature on the microstructural evolution and stress corrosion cracking (SCC) behaviors of a newly developed high-strength mining round-link chain steel. As the tempering temperature increased, the dislocation density progressively decreased, while the amount of (V, Mo)C precipitates significantly increased. After tempering at 625 °C, a substantial number of nanoscale (V, Mo)C precipitates with a certain concentration of carbon vacancies were uniformly distributed. Compared to present commercial high-strength round-link chain steels, the newly developed round-link chain steel demonstrated superior SCC resistance at similar yield strength level. Based on the influence of nano-scale precipitates and dislocation density on hydrogen diffusion characteristics, this study further elucidated the potential mechanisms underlying hydrogen-induced stress corrosion cracking in high-strength round-link chain steel.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112770"},"PeriodicalIF":7.4,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394486","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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