Materialia最新文献_第5页

Effect of alloying on intrinsic ductility in WTaCrV high entropy alloys 合金对WTaCrV高熵合金本征塑性的影响

IF 2.9

Materialia Pub Date : 2025-08-18 DOI: 10.1016/j.mtla.2025.102519

Akshay Korpe , Osman El-Atwani , Enrique Martinez

{"title":"Effect of alloying on intrinsic ductility in WTaCrV high entropy alloys","authors":"Akshay Korpe , Osman El-Atwani , Enrique Martinez","doi":"10.1016/j.mtla.2025.102519","DOIUrl":"10.1016/j.mtla.2025.102519","url":null,"abstract":"<div><div>Tungsten (W) exhibits desirable properties for extreme applications, such as the divertor in magnetic fusion reactors, but its practicality remains limited due to poor formability and insufficient irradiation resistance. In this work, we study the intrinsic ductility of body-centered cubic WTaCrV based high entropy alloys (HEAs), which are known to exhibit excellent irradiation resistance. The ductility evaluations are carried out using a criterion based on the competition between the critical stress intensity factors for emission (<span><math><msub><mrow><mi>K</mi></mrow><mrow><mi>I</mi><mi>e</mi></mrow></msub></math></span>) and cleavage (<span><math><msub><mrow><mi>K</mi></mrow><mrow><mi>I</mi><mi>c</mi></mrow></msub></math></span>) in the {110} slip planes and {110} crack planes, which are evaluated within the linear elastic fracture mechanics framework and computed using density functional theory. The results suggest that increasing the alloying concentrations of V and reducing the concentrations of W can significantly improve the ductility in these HEAs. The elastic anisotropy for these HEAs is analyzed using the Zener anisotropy ratio and its correlation with the concentration of W in the alloys is studied. Results indicate that these alloys tend to be fairly isotropic independently from the concentration of W in them. The computed data for the elastic constants of these HEAs is also compared against available experimental data. The results are in good agreement, validating the robustness and accuracy of the computational methods. Multiple phenomenological ductility metrics were also computed and analyzed against the analytical model. Some metrics, mainly the surrogate D parameter, show a good correlation with the Rice model. The potential of these empirical metrics to serve as surrogate screening models for optimizing the compositional space is also discussed.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"43 ","pages":"Article 102519"},"PeriodicalIF":2.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144904446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ investigation of discontinuous precipitation in Sn-Bi low temperature solders Sn-Bi低温焊料不连续析出的原位研究

IF 2.9

Materialia Pub Date : 2025-08-16 DOI: 10.1016/j.mtla.2025.102524

Xiaomei Shen, Siyang Wang, Christopher M. Gourlay

引用次数: 0

Evolving Einstein: The instability of aperiodic monotile as a polycrystalline microstructure 演化的爱因斯坦：作为多晶微结构的非周期单晶的不稳定性

IF 2.9

Materialia Pub Date : 2025-08-14 DOI: 10.1016/j.mtla.2025.102517

Sankarganesh P., Vinothkumar G., P.G. Kubendran Amos

{"title":"Evolving Einstein: The instability of aperiodic monotile as a polycrystalline microstructure","authors":"Sankarganesh P., Vinothkumar G., P.G. Kubendran Amos","doi":"10.1016/j.mtla.2025.102517","DOIUrl":"10.1016/j.mtla.2025.102517","url":null,"abstract":"<div><div>The recent discovery of the <em>Einstein</em> monotile has enabled the design of a new class of disordered materials with interesting range of physical and mechanical properties. When the characteristic shape of this monotile alters, the properties of the associated disordered materials varies noticeably. Therefore, the applicability of the hat-based disordered material is coupled with the thermodynamic stability of its tiles. Given this significance, the stability of the aperiodic hat-based microstructure is investigated in this work through a thermodynamically consistent multiphase-field approach. The present analysis reveals that the aperiodic hat microstructure, when treated as a polycrystalline system, is inherently unstable, and is progressively evolving towards a conventional grain morphology with straight interfaces, thereby erasing its characteristic topological disorder. The instability is traced to the grain-boundary network of the hat microstructure, characterised by the energetically unfavourable quadruple-junctions and protrusions, which induce a transformation to a lower-energy state. Despite being morphologically identical, during the evolution, the hats yield grains of varied topological feature or face-classes dictated by the neighbours and additionally, their orientation. The exhaustive analysis of the evolution lends itself in predicting the unstable tiles in the polycrystalline hat microstructure before the energy-minimising evolution sets-in. The present work ultimately unravels that, as opposed to conventional polycrystalline systems, grain growth in the aperiodic-monotile microstructure is dictated by orientation, which correspondingly establishes varying neighbours.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"43 ","pages":"Article 102517"},"PeriodicalIF":2.9,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144918071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Delineating stainless behavior of austenitic compositionally complex alloys through CALPHAD-informed alloy design 基于calphad的合金设计描述奥氏体成分复杂合金的不锈行为

IF 2.9

Materialia Pub Date : 2025-08-13 DOI: 10.1016/j.mtla.2025.102495

Peter F. Connors , Debashish Sur , Junsoo Han , John R. Scully

{"title":"Delineating stainless behavior of austenitic compositionally complex alloys through CALPHAD-informed alloy design","authors":"Peter F. Connors , Debashish Sur , Junsoo Han , John R. Scully","doi":"10.1016/j.mtla.2025.102495","DOIUrl":"10.1016/j.mtla.2025.102495","url":null,"abstract":"<div><div>The emergence of compositionally complex alloys (CCAs) and phase-predictive software has enabled the microstructure-informed optimization of corrosion-resistant elements to promote stainless behavior. The relatively high solubility of lightweighting elements (LWEs) Al, Si, and Ti in face-centered cubic (FCC) CCA microstructures offers a promising path toward lower-density austenitic alloys. In this work, a set of single-phase FCC alloys based on Ni<sub>43</sub>Fe<sub>37</sub>Cr<sub>10</sub>-(Al,Si,Ti)<sub>10</sub>—excluding Mn and Co—was designed using high-throughput CALPHAD modeling and fabricated via arc melting. This composition space enabled a controlled study of LWE influence on relevant properties while maintaining chemical homogeneity. LWE additions reduced density and increased hardness relative to a control alloy without LWEs, with Al and Ti producing the most pronounced effects on each property, respectively. Two key electrochemical parameters—passive film growth rate and resistance—were quantified, with Ti showing the strongest per-atom effect: a greater than 10-fold increase in film resistance and 4-fold increase in growth rate relative to the control alloy. <em>Post-hoc</em> XPS results and <em>in operando</em> tracking of elemental dissolution rates measured via AESEC suggest rapid surface enrichment by LWE, providing an explanation for the observed electrochemical benefits of LWE inclusion. Finally, unsupervised clustering analysis identified simple quantitative design rules for corrosion: Ti greater than 3 at.% promotes both fast film growth and higher passive film resistance, while Si greater than 5 at.% or Ti at 3 at.% yields rapid growth but lower resistance.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"43 ","pages":"Article 102495"},"PeriodicalIF":2.9,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Accuracy of calculated elastic properties of inorganic materials: Density functional theory and machine-learned potentials 无机材料弹性特性计算的准确性：密度泛函理论和机器学习势

IF 2.9

Materialia Pub Date : 2025-08-13 DOI: 10.1016/j.mtla.2025.102503

Victor Milman , Alexander Perlov , Neil Spenley , Björn Winkler

{"title":"Accuracy of calculated elastic properties of inorganic materials: Density functional theory and machine-learned potentials","authors":"Victor Milman , Alexander Perlov , Neil Spenley , Björn Winkler","doi":"10.1016/j.mtla.2025.102503","DOIUrl":"10.1016/j.mtla.2025.102503","url":null,"abstract":"<div><div>Elastic coefficients of a large set of inorganic compounds are calculated using the most popular expressions for the exchange–correlation functional in the density functional theory (DFT) formalism. We compiled an extensive database of experimental measurements for comparison with the calculated properties, and suggest that the meta-GGA RSCAN functional produces the most accurate description overall, followed by PBESOL or Wu-Cohen formulations. We show that the most commonly used functional, PBE, offers the least accurate representation of elastic properties. A popular machine-learning potential scheme, MACE, using MP-0b, OMAT-0, or MACE-MATPES-r2SCAN-0 models has an RMS error for bulk and shear modulus that is only 1.5–2 times worse than the best DFT result while being 3–4 orders of magnitude faster. We demonstrate that calculated elastic properties can be used in conjunction with empirical expressions for Vickers hardness and fracture toughness to produce reasonable estimates of these mechanical properties for engineering applications of covalent and ionic crystals.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"43 ","pages":"Article 102503"},"PeriodicalIF":2.9,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A volume-stable collagen matrix promotes osteogenesis and osteoinduction in cleft lip fibroblasts: A novel approach for alveolar cleft repair 体积稳定的胶原基质促进唇裂成纤维细胞成骨和骨诱导：一种修复肺泡裂的新方法

IF 2.9

Materialia Pub Date : 2025-08-12 DOI: 10.1016/j.mtla.2025.102521

L. Parisi , N.P. Diserens , F. Mansour , S. Rihs , N. Clausen , N. Saulacic , G.C. La Scala , C. Katsaros , M. Degen

{"title":"A volume-stable collagen matrix promotes osteogenesis and osteoinduction in cleft lip fibroblasts: A novel approach for alveolar cleft repair","authors":"L. Parisi , N.P. Diserens , F. Mansour , S. Rihs , N. Clausen , N. Saulacic , G.C. La Scala , C. Katsaros , M. Degen","doi":"10.1016/j.mtla.2025.102521","DOIUrl":"10.1016/j.mtla.2025.102521","url":null,"abstract":"<div><div>The resorbability of a volume stable collagen matrix (vsCM) used for soft tissue augmentation makes it an appealing scaffold for bone tissue engineering in the craniofacial area, for example when congenital maxillary bone deficiencies occur in patients born with a cleft lip with or without palate. Hence, this study aimed to evaluate the bioactivity and biocompatibility of a vsCM using fibroblasts (CL-Fb) isolated from discarded lip tissues obtained during cheiloplasty, which exhibit strong bone differentiation potential <em>in vitro</em>.</div><div>We first characterized the physical and biochemical properties of the vsCM, confirming that its porosity closely resembles alveolar bone, with pore sizes between 50 and 100 µm. The matrix showed a high affinity for fibronectin, a serum protein critical for activating key osteogenic signaling pathways. Adsorption analyses revealed that up to 80 % and 45 % of human and bovine fibronectin, respectively, present in 200 µl of their respective 10 % serum, were bound by a vsCM sample measuring 3 mm in height and 4 mm in diameter. Following ISO 10993 guidelines, biocompatibility assays demonstrated that the vsCM supports CL-Fb viability, migration, and proliferation. It also promoted CL-Fb osteogenic differentiation and bone morphogenetic proteins (BMP) production, thereby activating autocrine and paracrine BMP/SMAD signaling to foster a regenerative microenvironment.</div><div>These findings provide the first evidence supporting vsCM as a candidate for bone regeneration applications and lay the groundwork for future <em>in vivo</em> validation.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"43 ","pages":"Article 102521"},"PeriodicalIF":2.9,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144858508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Post-build stress-relief optimization for laser powder bed fusion 316H stainless steel 激光粉末床熔合316H不锈钢的后期应力消除优化

IF 2.9

Materialia Pub Date : 2025-08-11 DOI: 10.1016/j.mtla.2025.102520

Geeta Kumari , Tim Graening , Xuan Zang , Peeyush Nandwana , Selda Nayir , Stephen Taller , Chase Joslin , Amanda L. Musgrove , Amy Godfrey , Caleb P. Massey

{"title":"Post-build stress-relief optimization for laser powder bed fusion 316H stainless steel","authors":"Geeta Kumari , Tim Graening , Xuan Zang , Peeyush Nandwana , Selda Nayir , Stephen Taller , Chase Joslin , Amanda L. Musgrove , Amy Godfrey , Caleb P. Massey","doi":"10.1016/j.mtla.2025.102520","DOIUrl":"10.1016/j.mtla.2025.102520","url":null,"abstract":"<div><div>Nuclear energy remains a critical component of a diversified and efficient energy portfolio, offering reliable, high-capacity, and low-carbon power. However, in the U.S., aging infrastructure and the slow qualification and deployment of advanced materials and manufacturing techniques hinder progress in next-generation reactor technologies. This study explores the application of laser powder bed fusion (LPBF) additive manufacturing for stainless steel 316H, with a focus on optimizing post-build heat treatments to enhance material properties for high-temperature nuclear applications. The research targets the optimization of stress-relief temperatures to alleviate postbuild residual stresses, ensuring improvements in the microstructural corelated properties. A series of microstructural and mechanical evaluations were performed on LPBF-printed SS-316H samples which were subjected to annealing at temperatures varying between 650 °C and 850 °C. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy analyses revealed that increasing the heattreatment temperature accelerated dislocation recovery. Vickers microhardness measurements showed an initial reduction in values, followed by stabilization over extended durations at all the temperatures. While higher temperatures facilitated faster recovery, they also promoted carbide precipitation along grain and solidification cell boundaries, narrowing the safe processing window. In contrast, heat treatment at 650°C preserved the cellular substructure and enabled controlled carbide precipitation over time. These findings highlight the importance of time–temperature optimization and suggest that 650°C for up to 2 h provides the most favorable balance between recovery and carbide control for a stress-relief treatment.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"43 ","pages":"Article 102520"},"PeriodicalIF":2.9,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144831458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of B and Cu on microstructure and eutectoid transformation kinetics in spheroidal graphite cast iron B和Cu对球墨铸铁组织和共析转变动力学的影响

IF 2.9

Materialia Pub Date : 2025-08-09 DOI: 10.1016/j.mtla.2025.102511

A.V. Bugten , L. Michels , R.H. Mathiesen , R. Bjørge , D. Chernyshov , C.J. McMonagle , W. van Beek , A. Pires , S. Simões , C.S. Ribeiro , Y. Li , L. Arnberg , M. Di Sabatino

{"title":"Influence of B and Cu on microstructure and eutectoid transformation kinetics in spheroidal graphite cast iron","authors":"A.V. Bugten , L. Michels , R.H. Mathiesen , R. Bjørge , D. Chernyshov , C.J. McMonagle , W. van Beek , A. Pires , S. Simões , C.S. Ribeiro , Y. Li , L. Arnberg , M. Di Sabatino","doi":"10.1016/j.mtla.2025.102511","DOIUrl":"10.1016/j.mtla.2025.102511","url":null,"abstract":"<div><div>The influences of boron (B) and copper (Cu) on the morphology of the graphite nodules and fraction of ferrite in spheroidal graphite iron (SGI) have been studied. It was observed that B promotes ferrite in a fully pearlitic SGI alloyed with 0.5 wt% Cu and 0.7 wt% Mn. For this particular alloy and casting shape the ferrite promoting effect of B saturated at approximately 20 ppm, resulting in a ferrite fraction of 20%. The carbon rejected from the matrix during the ferrite growth was deposited on the graphite nodules as sharp graphite protrusions. For an alloy with a fixed concentration of B (25 ppm), a fully pearlitic matrix could not be obtained by increasing the concentration of Cu to 1.2 wt%. Transmission electron microscopy (TEM) showed that a nanometer thick layer of Cu is present at the graphite-ferrite interface. B is detected in close proximity to the graphite-iron interface by using microprobe analysis. In-situ synchrotron X-ray experiments were conducted to analyze the eutectoid transformation kinetics. It shows that both B and Cu retards the eutectoid phase transformation kinetics when they are added individually. However, B accelerates the kinetics in alloys where Cu is present.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"43 ","pages":"Article 102511"},"PeriodicalIF":2.9,"publicationDate":"2025-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructural evolution and phase stability in Nb-containing interstitial Fe-Mn-Co-Cr-C high-entropy alloys: An in-situ synchrotron X-ray diffraction study during laser melting 含nb间隙Fe-Mn-Co-Cr-C高熵合金的显微组织演变和相稳定性：激光熔化过程的原位同步x射线衍射研究

IF 2.9

Materialia Pub Date : 2025-08-04 DOI: 10.1016/j.mtla.2025.102512

I.A.B. Moura , G.G. Ribamar , A.C. Chuang , T.S. Nunes , Jiajia Shen , Wei Zhang , P. Freitas Rodrigues , A.B. Pereira , Yutao Pei , F. Zhang , J.P. Oliveira

{"title":"Microstructural evolution and phase stability in Nb-containing interstitial Fe-Mn-Co-Cr-C high-entropy alloys: An in-situ synchrotron X-ray diffraction study during laser melting","authors":"I.A.B. Moura , G.G. Ribamar , A.C. Chuang , T.S. Nunes , Jiajia Shen , Wei Zhang , P. Freitas Rodrigues , A.B. Pereira , Yutao Pei , F. Zhang , J.P. Oliveira","doi":"10.1016/j.mtla.2025.102512","DOIUrl":"10.1016/j.mtla.2025.102512","url":null,"abstract":"<div><div>The influence of Nb on phase stability and microstructural evolution in an interstitial Fe-Mn-Co-Cr-C high-entropy alloy was investigated using in-situ synchrotron X-ray diffraction (SXRD) during laser melting. Scheil-Gulliver simulations predict the formation of σ and γ-f.c.c. phases in all three alloys, along with NbC in Nb-containing compositions. SXRD confirmed the presence of most predicted phases, but the σ phase was absent. Nb promotes crystallite refinement and increases dislocation density, though excessive additions reduce refinement efficiency due to solubility limits and secondary phase formation. Furthermore, Nb addition also enhances ε-h.c.p. phase formation by reducing stacking fault energy through NbC-induced carbon depletion. Analysis of intensity peak evolution reveals that Nb alters preferred grain orientations, reducing <span><math><msub><mrow><mo>{</mo><mn>111</mn><mo>}</mo></mrow><mi>γ</mi></msub></math></span> intensity while enhancing <span><math><msub><mrow><mo>{</mo><mn>220</mn><mo>}</mo></mrow><mi>γ</mi></msub></math></span>, leading to a more isotropic grain distribution. Overall, Nb plays a key role in phase selection, microstructure refinement, and preferred orientation evolution, allowing the tailored microstructure of high-entropy alloys via rapid solidification.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"43 ","pages":"Article 102512"},"PeriodicalIF":2.9,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144771018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the corrosion behavior of laser powder bed fusion (L-PBF) stainless steel 316 L in a simulated synovial fluid under inflammatory conditions 激光粉末床熔合（L- pbf）不锈钢316l在模拟滑膜液中炎症条件下的腐蚀行为评价

IF 2.9

Materialia Pub Date : 2025-08-01 DOI: 10.1016/j.mtla.2025.102499

Deeparekha Narayanan , Toan Dang Truong , Ulises Martin , Mohsen Taheri Andani , Homero Castaneda

{"title":"Evaluation of the corrosion behavior of laser powder bed fusion (L-PBF) stainless steel 316 L in a simulated synovial fluid under inflammatory conditions","authors":"Deeparekha Narayanan , Toan Dang Truong , Ulises Martin , Mohsen Taheri Andani , Homero Castaneda","doi":"10.1016/j.mtla.2025.102499","DOIUrl":"10.1016/j.mtla.2025.102499","url":null,"abstract":"<div><div>This study investigates the corrosion behavior of a stainless steel 316 L (SS316L) manufactured using laser powder bed fusion (L-PBF) that can potentially be used in total joint replacements. To simulate in vivo conditions after a joint replacement, a modified simulated synovial fluid (i-SSF) was used while a 0.1 M HCl solution was used to evaluate localized corrosion characteristics in local acidic conditions. Cyclic potentiodynamic polarization (CPP) was employed to analyze corrosion kinetics and localized corrosion resistance, while electrochemical impedance spectroscopy (EIS) was used to monitor film formation in the test solutions. From both the CPP and EIS results, the L-PBF SS316L was found to form a more protective passive film that showed lower susceptibility to breakdown characterized by an <em>E<sub>pit</sub></em> of about twice that of a wrought SS316L in the i-SSF solution. The corrosion resistance in 0.1 M HCl was slightly reduced in the L-PBF SS316L but the presence of passive film that was more resistant to breakdown was observed. Due to the complex interactions between the various components present in the i-SSF, the surfaces after CPP showed a wider, shallower attack morphology while that in 0.1 M HCl showed a more localized attack with small pits randomly covering the surface. Laser scan track boundaries and cell interiors were found to preferential regions of attack.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"42 ","pages":"Article 102499"},"PeriodicalIF":2.9,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144757962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0