Corrosion SciencePub Date : 2025-08-27DOI: 10.1016/j.corsci.2025.113278
Yiqi Zhou , Xiaochang Xu , Peihu Yuan , Ke Sang , Wenqian Wang , Lili Li , Shikang Feng , Zhigang Yang , Chi Zhang
{"title":"Effect of re-melting strategies on pitting corrosion resistance in laser powder bed fusion Ni over-alloyed duplex stainless steel","authors":"Yiqi Zhou , Xiaochang Xu , Peihu Yuan , Ke Sang , Wenqian Wang , Lili Li , Shikang Feng , Zhigang Yang , Chi Zhang","doi":"10.1016/j.corsci.2025.113278","DOIUrl":"10.1016/j.corsci.2025.113278","url":null,"abstract":"<div><div>Re-melting during laser powder bed fusion (LPBF) produced 22Cr duplex stainless steel (DSS) enhances austenite distribution homogeneity and elemental dispersion without altering the austenite content (∼35 %). Compared to LPBF 22Cr DSS without re-melt process (critical pitting potential, <em>E</em><sub><em>pit</em></sub> = 0.44 V<sub>SCE</sub> at 70°C; critical pitting temperature, CPT = 56.9°C), processing with three re-melting cycles increases <em>E</em><sub><em>pit</em></sub> by 0.15 V<sub>SCE</sub> and CPT by 3.8°C. This improvement in pitting corrosion resistance arises from expanded austenite coverage at grain boundaries—the primary pit nucleation sites. However, localised corrosion volume loss increases from 1.3 × 10<sup>8</sup> μm<sup>3</sup> (without re-melt) to 1.8 × 10<sup>8</sup> μm<sup>3</sup> (3 cycles re-melts), indicating accelerated corrosion propagation. Thus, re-melting exerts opposing effects on pitting nucleation resistance and pit growth kinetics. At lower potentials, austenite promotes pit growth in ferrite via galvanic coupling, evidenced by a 15 mV Volta potential difference (austenite > ferrite) measured by scanning Kelvin probe force microscopy (SKPFM). Conversely, at higher potentials, pits propagate preferentially within melt-pools where both phases corrode. Potentials exceeding <em>E</em><sub><em>pit</em></sub> further induce intergranular corrosion.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113278"},"PeriodicalIF":7.4,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144912902","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}
{"title":"Unveiling the reasons for corrosion resistance difference between two phases of the Fe40Cr40Ni20 duplex MEA in the transpassive region","authors":"Shu-Qian Jian, Zhu Wang, Zhi-Le Yang, Jia-Xu Ma, Chuang Yang, Jing Wang, Lei Zhang","doi":"10.1016/j.corsci.2025.113277","DOIUrl":"10.1016/j.corsci.2025.113277","url":null,"abstract":"<div><div>The passive film structure and corrosion behavior of the MEA are characterized using electrochemical tests, XPS, ToF-SIMS and TEM. The obtained results indicate that the MEA is consisted of the Cr enriched BCC phase (Fe<sub>37</sub>Cr<sub>52</sub>Ni<sub>11</sub>) and Ni enriched FCC phase (Fe<sub>42</sub>Cr<sub>32</sub>Ni<sub>26</sub>). The passive film of the MEA displays a bilayer structure, where Fe, Ni oxides are accumulated in outer layer, while Cr oxides are concentrated in inner layer. The Cr content in passive film decreases with the increasing applied potential, resulting in the degradation of film at high potentials. The presence of NiCr<sub>2</sub>O<sub>4</sub> in the passive film is confirmed by XPS, and its fraction in the Cr species increases with the applied potential, which suggests that NiCr<sub>2</sub>O<sub>4</sub> is more stable than Cr<sub>2</sub>O<sub>3</sub> at high potentials. Since high content of Ni is beneficial for the formation of NiCr<sub>2</sub>O<sub>4</sub>, the passive film on FCC phase in transpassive region is more stable than that on BCC phase. This is responsible for the preferential dissolution of BCC local film in transpassive region.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113277"},"PeriodicalIF":7.4,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144912903","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}
Corrosion SciencePub Date : 2025-08-26DOI: 10.1016/j.corsci.2025.113276
Xinqi Wang , Xinxin Cai , Jiayi Li , Ruixiang Zhou , Xuefeng Gui , Jiwen Hu , Shudong Lin
{"title":"Bio-based eco-friendly coatings with multi-mechanism anticorrosion design and advanced thermal conductivity","authors":"Xinqi Wang , Xinxin Cai , Jiayi Li , Ruixiang Zhou , Xuefeng Gui , Jiwen Hu , Shudong Lin","doi":"10.1016/j.corsci.2025.113276","DOIUrl":"10.1016/j.corsci.2025.113276","url":null,"abstract":"<div><div>Metal corrosion leads to structural degradation, safety risks, and economic losses, necessitating the development of advanced anticorrosion coatings. Conventional organic coatings often rely on fossil-based thermosetting resins and solvent-based processing, causing environmental concerns and coating defects. In this study, a bio-based, solvent-free, UV-curable smart anticorrosion coating was developed using a novel epoxidized soybean oil-based resin (IESO) with superior mechanical strength, thermal stability, and volatile organic compounds (VOCs) -free characteristic. To enhance anti-corrosion performance and thermal conductivity, hexagonal boron nitride (h-BN) was first hydroxylated to obtain hydroxylated boron nitride (OBN), which was then functionalized with tannic acid (TA) and Zn<sup>2 +</sup> to form TA-Zn-OBN through synergistic hydrogen bonding and π–π* interactions. This functional filler improves dispersion, interfacial compatibility, and introduces a multi-responsive self-healing mechanism. Subsequently, a multifunctional coating (TA-Zn-OBN/IG40) was prepared using a mixture of IESO and diluted (GAGM) as the matrix (IG40) and TA-Zn-OBN as the filler. The developed coating exhibits multiple anti-corrosion mechanisms, self-healing capability, and advanced thermal management, providing a sustainable and effective solution for corrosion protection of electronic devices.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113276"},"PeriodicalIF":7.4,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926031","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}
Corrosion SciencePub Date : 2025-08-26DOI: 10.1016/j.corsci.2025.113275
Wenhao Zhao , Dongpo Xu , Zhenrong Gao , Na Wang , Qianye Zhu , Wuming Guo , Zhen Cao , Jinlong Li
{"title":"Improved corrosion resistance of TiMgN coating through filling grain boundaries and forming passive layer by Mg-containing oxides","authors":"Wenhao Zhao , Dongpo Xu , Zhenrong Gao , Na Wang , Qianye Zhu , Wuming Guo , Zhen Cao , Jinlong Li","doi":"10.1016/j.corsci.2025.113275","DOIUrl":"10.1016/j.corsci.2025.113275","url":null,"abstract":"<div><div>Transgranular corrosion is widely considered to be the main reason for the premature failure of coatings prepared by magnetron sputtering technology in salt spray environment. Considering the high chemical reactivity of Mg, so that Mg is incorporated into the TiN coating as a sacrificial anode component to improve the salt spray corrosion resistance. Specifically, part of the doped Mg is dissolved into the TiN lattice to form (Ti, Mg) N solid solution by replacing Ti atoms, and the other part forms amorphous Mg<sub>3</sub>N<sub>2</sub> phase. After 336 h in salt spray environment, the surface of TiMgN coating containing 35 at% Mg has no cracks that can accelerate localized corrosion and promote dissolution beneath the substrate. In the early stage of corrosion, O<sub>2</sub> and corrosive medium mainly penetrate the coating along the grain boundaries. The high chemical reactivity of Mg can promote formation of oxides (MgO, TiO<sub>2</sub>). MgO and TiO<sub>2</sub> aggregating at the grain boundaries can seal structural discontinuities to enhance coating densification and hinder the further penetration of corrosion medium. With the increase of corrosion time, the formation of continuous and dense surface passive layer (MgO, TiO<sub>2</sub> and Mg(OH)<sub>2</sub>) reduces corrosion rate. The MgO/Mg(OH)<sub>2</sub> acts as a physical barrier against Cl<sup>-</sup> penetration and the inherent corrosion resistance of TiO<sub>2</sub> enhances passivation stability and reduces the dissolution of the passive layer.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113275"},"PeriodicalIF":7.4,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144912904","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}
Corrosion SciencePub Date : 2025-08-26DOI: 10.1016/j.corsci.2025.113273
Yangyang Ma , Zhichao Jiao , Zhiyuan Huang , Qing Zhou , Tiange Huang , Xing Ran , Zhe Wang , Longshi Qiu , Haishan Teng , Xiaojiang Lu , Zhao Shen , Haifeng Wang
{"title":"Exploration on the oxidation resistance of TiAlNbN films: Mechanisms of nanopore regulation and crack suppression","authors":"Yangyang Ma , Zhichao Jiao , Zhiyuan Huang , Qing Zhou , Tiange Huang , Xing Ran , Zhe Wang , Longshi Qiu , Haishan Teng , Xiaojiang Lu , Zhao Shen , Haifeng Wang","doi":"10.1016/j.corsci.2025.113273","DOIUrl":"10.1016/j.corsci.2025.113273","url":null,"abstract":"<div><div>The high-temperature service environment places stringent demands on the oxidation resistance of traditional TiAlN films, which is, however, limited by severe poring and cracking on the oxidized surface. In this paper, the oxidation behavior and underlying mechanisms of the films following Nb alloying were systematically investigated through isothermal oxidation tests and density-functional theory (DFT) calculations. The results demonstrate that Nb addition effectively suppresses the anatase-to-rutile (a-TiO<sub>2</sub> → r-TiO<sub>2</sub>) phase transformation, thereby preventing pore agglomeration. Furthermore, Nb regulates the diffusion kinetics of Al and Ti while occupying grain boundaries to impede elemental diffusion, collectively decelerating the oxidation rate and optimizing the stratified oxide structure. The optimized layer stratification alleviates the stress concentration inside the oxide layer by forming regular distribution of tiny holes, which avoids the generation of cracks and improves the long-term stability of the film. This work offers a comprehensive analysis into the internal mechanism of refractory element alloying on the oxidation behavior of TiAlN-based films.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113273"},"PeriodicalIF":7.4,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908048","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}
Corrosion SciencePub Date : 2025-08-26DOI: 10.1016/j.corsci.2025.113270
Jinghui Fan , Sifan Tan , Guangyu Zhu , Langfeng Zhu , Wenxing Luo , Jue Wang , Baowen Fu , Chao Qiang , Wenjing Chen , Xiaowu Hu , Tao Xu , Xiongxin Jiang
{"title":"Effects of Cu@Sn@Ag core-shell particles on microstructure, corrosion and mechanical properties of SAC305 solder joint","authors":"Jinghui Fan , Sifan Tan , Guangyu Zhu , Langfeng Zhu , Wenxing Luo , Jue Wang , Baowen Fu , Chao Qiang , Wenjing Chen , Xiaowu Hu , Tao Xu , Xiongxin Jiang","doi":"10.1016/j.corsci.2025.113270","DOIUrl":"10.1016/j.corsci.2025.113270","url":null,"abstract":"<div><div>This study investigated the impact on the microstructure, corrosion behaviour and mechanical properties of Sn-3.0Ag-0.5Cu (SAC305) solder joints of Cu@Sn@Ag (CSA) core-shell particles. The study revealed that the grain in the solder joints can be refined by CSA particles. SAC305–0.05 wt% CSA solder joints exhibited the greatest tensile strength, surpassing the original solder joints (SAC305) by 17.10 %. Saltwater immersion corrosion tests revealed the mechanical properties of solder joints gradually deteriorated with age, with the fracture mode changing from ductile to brittle as the immersion period increased. After 30 days of saltwater immersion, the CSA particles remained spherical, preventing further penetration of Cl. Furthermore, polarisation curves and electrochemical impedance spectroscopy (EIS) data obtained from electrochemical testing revealed the solder joints containing CSA particles exhibited lower corrosion current density, larger semi-circular ring diameters and higher total impedance values. Scanning electron microscopy (SEM) images and 3D morphology of corrosion products after electrochemical testing showed that corrosion products on joints containing CSA particles exhibited more uniformly distributed and denser, with reduced roughness and maximum contour height.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113270"},"PeriodicalIF":7.4,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908050","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}
Corrosion SciencePub Date : 2025-08-26DOI: 10.1016/j.corsci.2025.113274
Mingyu He , Hongjun Kang , Zhuoming Lian , Songtao Lu , Wei Qin , Xiaohong Wu
{"title":"Enhanced Pb-Bi corrosion resistance of FeCrMnAlV coating with V-engineered high-density grain boundaries induced by compact FeCr2O4/Al2O3 bilayer oxide barrier","authors":"Mingyu He , Hongjun Kang , Zhuoming Lian , Songtao Lu , Wei Qin , Xiaohong Wu","doi":"10.1016/j.corsci.2025.113274","DOIUrl":"10.1016/j.corsci.2025.113274","url":null,"abstract":"<div><div>Overcoming Pb-Bi eutectic alloy (LBE) corrosion to structural materials remains critical for lead-cooled fast reactor deployment. High entropy alloys (HEAs) coatings are promising but require to further enhance the compactness of protective oxide layer. Herein, this work introduces a novel strategy: fabricating the FeCrMnAlV HEAs coating with V-engineered high-density grain boundaries (H-GBs) via laser cladding to improve oxide layer compactness. Electron backscatter diffraction (EBSD) confirms that the V-addition combined with laser-induced undercooling achieves exceptional grain refinement with averaged grain size of 2.6 μm and high grain boundaries density of 1.5 × 10<sup>3</sup> mm<sup>2</sup>/mm<sup>3</sup>. Transmission electron microscopy with energy-dispersive X-ray spectroscopy (TEM-EDS) mapping unequivocally reveals V segregation at grain boundaries (27.8 at%), which inhibits grain growth. LBE corrosion tests demonstrates a remarkably low corrosion oxidation rate constant (<em>K</em><sub><em>p</em></sub>) of 0.0231 μm<sup>2</sup>/h for the V-engineered HEAs coating, which is 2–3 orders of magnitude lower than conventional primary structural materials. It can be concluded that the enhanced corrosion resistance of FeCrMnAlV HEAs coating is mainly due to the formation of compact FeCr<sub>2</sub>O<sub>4</sub>/Al<sub>2</sub>O<sub>3</sub> bilayer oxide barrier, facilitated by the V-engineered H-GBs network. This work provides a new strategy towards to V-engineered H-GBs in HEAs coatings for enhancing LBE corrosion resistance.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113274"},"PeriodicalIF":7.4,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144912899","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}
Corrosion SciencePub Date : 2025-08-25DOI: 10.1016/j.corsci.2025.113271
Cheng Zhang , Meitao Qi , Peng Peng , Shuai Long , Xin Wan , Qingxia Wang , Qingshan Yang , Qingwei Dai , Liang Wu
{"title":"Induced growth orientation deviation of Mg(OH)₂ by heat treatment to enhance corrosion resistance of Mg-Sc alloy","authors":"Cheng Zhang , Meitao Qi , Peng Peng , Shuai Long , Xin Wan , Qingxia Wang , Qingshan Yang , Qingwei Dai , Liang Wu","doi":"10.1016/j.corsci.2025.113271","DOIUrl":"10.1016/j.corsci.2025.113271","url":null,"abstract":"<div><div>This work presents a novel microstructure-driven strategy to enhance the corrosion resistance of Mg-Sc alloys by regulating the growth orientation deviation of Mg(OH)<sub>2</sub> corrosion products through heat treatment. This approach promotes the formation of dense and compact corrosion films, fundamentally improving the barrier performance. Results reveal that aging induces a transition from randomly stacked Mg(OH)<sub>2</sub> to a highly ordered, interleaved lamellar structure, significantly improving corrosion resistance. The stress-relieved condition exhibits a partially ordered morphology with intermediate protection, while solution-treated alloys suffer from severe grain coarsening and develop porous, disordered corrosion films. The growth orientation deviation is governed by the combined effects of grain refinement, texture weakening, nanoscale precipitate pinning, and reduced surface energy anisotropy. These factors collectively promote lateral stacking of corrosion products, enhancing film compactness and corrosion resistance. This study provides a microstructure-driven strategy to control corrosion product growth orientation, offering a new pathway for developing highly corrosion-resistant Mg alloys.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113271"},"PeriodicalIF":7.4,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903733","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}
Corrosion SciencePub Date : 2025-08-25DOI: 10.1016/j.corsci.2025.113272
Kai Zhou, Daoxin Liu, Xiaohua Zhang, Yanjie Liu, Mengyao Li, Junnan Wu, Zhiqiang Yang
{"title":"TiAlTaSiN/TiAlTaSi multilayer coatings for enhancing hot salt corrosion fatigue resistance of TC11 Alloy","authors":"Kai Zhou, Daoxin Liu, Xiaohua Zhang, Yanjie Liu, Mengyao Li, Junnan Wu, Zhiqiang Yang","doi":"10.1016/j.corsci.2025.113272","DOIUrl":"10.1016/j.corsci.2025.113272","url":null,"abstract":"<div><div>This study investigates the effect of TiAlTaSiN/TiAlTaSi multilayer coatings with varying modulation periods on the hot salt corrosion fatigue (HSCF) behavior of TC11 alloy, and discusses the mechanisms by which the coatings enhance resistance to hot salt corrosion (HSC) and fatigue crack initiation. The results indicate that the 4-layer coated samples exhibit the highest resistance to HSC and HSCF among the three modulation period designs. The alternating structure of nanocrystalline ceramic and amorphous metal layers effectively prevents the diffusion of corrosive elements such as Cl and O into the substrate. The HSCF limit of the 4-layer coated sample is improved by 30.5 % compared to the uncoated substrate. Additionally, the multilayer coating's high toughness inhibits surface strain localization and suppresses dislocation slip at the surface, thereby delaying fatigue crack initiation.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113272"},"PeriodicalIF":7.4,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908049","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}
Corrosion SciencePub Date : 2025-08-24DOI: 10.1016/j.corsci.2025.113269
Jinghan Yang , Xingyu Chen , Linyang Wu , Xiaoyun Ding , Jinchao Jiao , Menghui Cui , Yong Lian , Jin Zhang , Pengfei Ji , Shuai Wu , Yan Su
{"title":"Stress corrosion behavior using in-situ stress-electrochemical method of 7A52 aluminum alloy prepared by various processes","authors":"Jinghan Yang , Xingyu Chen , Linyang Wu , Xiaoyun Ding , Jinchao Jiao , Menghui Cui , Yong Lian , Jin Zhang , Pengfei Ji , Shuai Wu , Yan Su","doi":"10.1016/j.corsci.2025.113269","DOIUrl":"10.1016/j.corsci.2025.113269","url":null,"abstract":"<div><div>A novel method is proposed to quantitatively monitor stress corrosion cracking (SCC) behavior under four-point bending loading conditions using in-situ stress-coupled electrochemical impedance spectroscopy (EIS). A systematic comparison reveals distinct SCC susceptibility between powder metallurgy (PM) and conventional melt-cast (CM) 7A52 aluminum alloys, with the PM 7A52 exhibiting delayed SCC initiation, lower stress relaxation, and shallower crack propagation under varying tensile elastic stresses. The cracks propagate through both transgranular and intergranular modes. The improved SCC resistance of PM 7A52 is primarily attributed to the combined effects of anodic dissolution and crystallographic orientation.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113269"},"PeriodicalIF":7.4,"publicationDate":"2025-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144904306","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}