Materialwissenschaft und Werkstofftechnik最新文献

{"title":"Cover Picture: (Materialwiss. Werkstofftech. 2/2026)","authors":"","doi":"10.1002/mawe.70110","DOIUrl":"https://doi.org/10.1002/mawe.70110","url":null,"abstract":"<p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147615400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 3","pages":"243-254"},"PeriodicalIF":1.1,"publicationDate":"2026-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148095477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of coil current on temperature distribution on extruder in extrusion based metal additive manufacturing using induction heating\u0000 Einfluss des Spulenstroms auf die Temperaturverteilung am Extruder bei der extrusionsbasierten additiven Metallfertigung unter Verwendung von Induktionserwärmung","authors":"A. Sihore,&nbsp;R. K. Choubey,&nbsp;P. K. Jain,&nbsp;M. Srivastava","doi":"10.1002/mawe.70061","DOIUrl":"https://doi.org/10.1002/mawe.70061","url":null,"abstract":"<p>The use of induction heating as an energy source in extrusion-based metal additive manufacturing is gaining attention for its clean, safe, and precise heating. Melting aluminum filament within the extruder and depositing it can be challenging and requires careful control of temperature distribution which, in turn, depends on current and frequency. This study simulates a 2D axisymmetric model consisting of 8 mm outer radius extruder with 0.9 mm inner radius and induction coil using COMSOL Multiphysics software. The temperature distribution on extruder has been analysed by varying the coil current from 200 A to 300 A in steps, while keeping the frequency constant at 55 kHz. Simulation results show that at 200 A, as the extruder's outer surface reached 650 °C, the inner surface attains 610 °C temperature, which is sufficient to melt aluminum filament required for printing. A 40 °C temperature drop has been observed at the inner surface at 200 A, compared to 68 °C at 250 A and 99 °C at 300 A. Further, experimental validation confirmed the simulation results of less temperature drop at 200 A as compared to other current levels. Hence, this current level is preferred for printing aluminum with the developed setup, offering better thermal uniformity, smooth extrusion of molten materials and consistent layer deposition.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"5-16"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147562837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of composition in alumina (Al2O3)/316 stainless steel composite coating for enhanced tribological and corrosion performance\u0000 Einfluss der Zusammensetzung in einer Verbundbeschichtung aus Aluminiumoxid (Al2O3) und Edelstahl 316 zur Verbesserung der tibologischen Eigenschaften und des Korrosionswiderstandes","authors":"A. Tyagi,&nbsp;M. Das,&nbsp;S. Kapil","doi":"10.1002/mawe.70062","DOIUrl":"10.1002/mawe.70062","url":null,"abstract":"<p>Composite coatings are used in automotive, aerospace, electronics, and manufacturing for their ability to enhance durability, corrosion, and wear resistance in harsh environments. Steel composites with high alumina content show promise but face challenges in adherence and densification. This study investigates the tribological and corrosion properties of alumina/stainless steel 316 composite coatings fabricated using an in-house developed non-pneumatic directed energy deposition system. Effect of different alumina/ stainless steel 316 coating compositions on tribological and corrosion behavior of the substrate is evaluated by varying the weight percent of the aluminum oxide (10 %, 20 %, 30 % and 40 %). The coatings exhibit significantly better wear resistance than the substrate, whose friction coefficient is 0.59 ± 0.015. In contrast, coatings I, II, III, and IV show lower values of 0.45 ± 0.007, 0.38 ± .009, 0.35 ± 0.003, and 0.34 ± 0.005, resulting in a continuous decrease in friction and wear. Corrosion resistance improves with higher aluminum oxide content. The self-corrosion potentials of coatings I, II, III, and IV are −320 ± 10.1 mV, −250 ± 11.2 mV, −220 ± 6.4 mV, and −200 ± 6.3 mV, respectively, which is significantly higher than the substrate (−500 ± 13.65 mV).</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"17-25"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological analysis of pulsed laser-ablated chopped carbon fiber-reinforced magnesium matrix composites\u0000 Morphologische Analyse von gepulst-laserablativen, kurzfaserverstärkten Magnesiummatrix-Kohlenstofffaser-Verbundwerkstoffen","authors":"K. Zhou,&nbsp;Y. Wang,&nbsp;Q. Gao,&nbsp;X. Wu,&nbsp;B. Jiang,&nbsp;Z. Wu","doi":"10.1002/mawe.70078","DOIUrl":"10.1002/mawe.70078","url":null,"abstract":"<p>This study systematically investigates the ablation mechanism and thermal conduction characteristics of nanosecond pulsed laser on chopped carbon fiber-reinforced magnesium matrix composites. By comparing the ablation morphologies of the chopped carbon fiber-reinforced AZ31B magnesium matrix composite and AZ31B magnesium alloy under laser power (25 W to 50 W), scanning speed (15 mm/s), and pulse frequency (30 kHz), combined with multi-scale characterization techniques such as scanning electron microscopy, the influence mechanism of carbon fiber reinforcement on laser thermal effects was revealed. Experimental results indicate that the high axial thermal conductivity of chopped carbon fibers enhances the overall thermal conductivity of the composite. Carbon fibers suppress localized matrix overheating through directional heat dissipation, while the surface oxides formed during ablation contribute to an increase in microhardness. This research provides theoretical guidance for optimizing laser processing parameters, emphasizing the critical balance between power selection and fiber distribution in controlling thermal damage.</p><p>Diese Studie untersucht systematisch den Ablationsmechanismus und die Wärmeleitungseigenschaften von Nanosekunden-Laserpulsen in kurzfaserverstärkten Magnesiummatrix-Verbundwerkstoffen mit Kohlenstofffasern. Durch den Vergleich der Ablationsmorphologien des Verbundwerkstoffs (kurzfaser-kohlenstoffverstärkte AZ31B-Magnesiummatrix) und der reinen AZ31-Magnesiumlegierung unter variierender Laserleistung (25 W bis 50 W), Scangeschwindigkeit (15 mm/s) und Pulsfrequenz (30 kHz) sowie mithilfe von Charakterisierungsmethoden wie Rasterelektronenmikroskopie wird der Einfluss der Kohlenstofffaserverstärkung auf die Laserwärmeffekte analysiert. Experimentelle Ergebnisse zeigen, dass die hohe axiale Wärmeleitfähigkeit der Kurzfasern die Gesamtwärmeleitfähigkeit des Verbundwerkstoffs signifikant verbessert. Die Kohlenstofffasern unterdrücken lokale Überhitzungen der Matrix durch gerichteten Wärmeabtransport. Die durch Ablation gebildeten Oberflächenoxide tragen zur Erhöhung der Mikrohärte bei. Diese Forschung liefert theoretische Grundlagen zur Optimierung der Laserbearbeitungsparameter und betont die kritische Balance zwischen Leistungswahl und Faserverteilung zur Kontrolle thermischer Schäden.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"33-41"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147566931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling and optimization of dual-stage electropolishing (DSEP) for additively manufactured SS316L components\u0000 Modellierung und Optimierung des zweistufigen Elektropolierens (DSEP) für additiv gefertigte SS316L-Komponenten","authors":"R. Prakash,&nbsp;M. Das,&nbsp;R. D. Kulkarni","doi":"10.1002/mawe.70054","DOIUrl":"10.1002/mawe.70054","url":null,"abstract":"<p>This article investigates the optimization of a novel dual-stage electropolishing (DSEP) method for surface roughness improvement of additive-manufactured SS316L. Additively manufactured components, due to various inevitable conditions, such as layer-by-layer printing, powder adhesion to the molten pool, rapid heating and cooling, etc., lead to high surface roughness and other defects. These defects are prominent in complex components. Post-processing of metal additive-manufactured components remains challenging, especially for complex and miniature components. Electropolishing (EP) is an advanced machining technique to mitigate metallic components’ surface roughness and enhance their corrosion resistance as well. However, conventional electropolishing is effective when the surface roughness is low, as the material removal rate is slow. This current work is motivated by the need to improve the material removal rate of conventional electropolishing as well as the surface quality of additively manufactured SS316L components. In the first stage of dual-stage electropolishing, high voltage is supplied compared to the limited current plateau region (LCPR) to dissolve defects like partial melts and attached particles, and in the second stage, the potential difference is supplied in the limited current plateau region for further smoothening. Response surface methodology (RSM) and analysis of variance (ANOVA) are used to optimize parameters like first-stage voltage (V₁) and process durations (T₁) and (T₂). Dual-stage electropolishing reduces surface roughness by approximately 69 % compared to 49 % by conventional electropolishing. The energy-dispersive x-ray spectroscopy (EDS) analysis manifested increased iron and chromium content in the final polished sample. Additionally, potentiodynamic polarization tests confirmed a significant improvement in corrosion resistance.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"58-70"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147566946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative insight sintering effects on epigallocatechin gallate – mediated nanohydroxyapatite\u0000 Vergleichende Untersuchung der Auswirkungen des Sinterns auf durch Epigallocatechingallat synthetisiertes Nanohydroxylapatit","authors":"S. Kannan,&nbsp;B. Purushothaman,&nbsp;S. Vasudevan","doi":"10.1002/mawe.70079","DOIUrl":"10.1002/mawe.70079","url":null,"abstract":"<p>Nano–hydroxyapatite (n–HAp) has garnered significant attention for its versatile applications, particularly in biomedical and environmental domains. In this study, a comparative analysis was conducted between as–prepared and sintered n–HAp, synthesised using epigallocatechin gallate (EGCG), a bioactive polyphenol compound. Sintering led to a notable increase in particle size and crystallinity, with the crystallinity index rising from 45 % to 84 %, alongside observable changes in lattice parameters. Morphological analysis revealed that both forms of epigallocatechin gallate–mediated n–HAp (epi–HAp) exhibited nano–globular and flower–like apatite structures. Biological assessments demonstrated excellent cytocompatibility (~ 90 %), low hemolytic activity (~ 0.5 %), and effective hemostatic behaviour, confirming the material's biocompatibility. Interestingly, the as–prepared epi–HAp exhibited slightly enhanced antibacterial activity compared to the sintered counterpart. Overall, the findings suggest that the as–prepared epi–HAp possesses marginally superior characteristics, making it more suitable for biomedical applications.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"49-57"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147563482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cover Picture: (Materialwiss. Werkstofftech. 1/2026)","authors":"","doi":"10.1002/mawe.70084","DOIUrl":"https://doi.org/10.1002/mawe.70084","url":null,"abstract":"<p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147569941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of bio-mimetic low surface energy modified copper- aluminum based superhydrophobic coating enhancing anti-corrosion efficiency of metal by electro-assisted deposition\u0000 Verbesserte Korrosionsbeständigkeit von Metall durch elektrochemisch unterstützte Abscheidung einer biomimetischen, oberflächenenergieverringerten, modifizierten, superhydrophoben Beschichtung auf Kupfer-Aluminiumbasis","authors":"H. P. Mamgain,&nbsp;R. Brajpuriya,&nbsp;P. R. Pati,&nbsp;J. K. Pandey","doi":"10.1002/mawe.70077","DOIUrl":"10.1002/mawe.70077","url":null,"abstract":"<p>Corrosion is an electrochemical process that degrade material's malleability, ductility, and mechanical strength, leading to significant economic losses. Conventional coatings available in the market have limitations, including high thickness, low anti-corrosion efficiency, and poor stability. Recently, superhydrophobic coatings have gained visibility due to their diverse applications, including corrosion resistance. In this study, copper-aluminum superhydrophobic coating is electrodeposited onto a steel substrate under varying deposition voltages and times. The coating is further modified with stearic acid, achieving a contact angle of 152°. To analyze the coating's characteristics, x-ray diffraction analysis, fourier transform infrared spectroscopy, microstructure and roughness analysis, and open-circuit voltammetry are conducted. The results confirmed the crystalline nature, lattice parameters, and grain sizes of copper (19.32 nm) and aluminum (22.45 nm). Corrosion resistance measurements demonstrated significant improvements, with an anti-corrosion efficiency of 98 %, polarization resistance of 82,300 Ω·cm², and an exceptionally low corrosion rate of 3.4 · 10⁻¹³ mm/year. The enhanced corrosion resistance is attributed to the rough nano-flower structure, which minimizes electrolyte contact and reduces the exposed surface area. Copper-aluminum composite coating has been engineered and functionalized with stearic acid to achieve robust superhydrophobicity. This innovative approach combines hierarchical structuring with low-surface-energy modification, offering exceptional corrosion protection.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"42-48"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of coil current on temperature distribution on extruder in extrusion based metal additive manufacturing using induction heating\u0000 Einfluss des Spulenstroms auf die Temperaturverteilung am Extruder bei der extrusionsbasierten additiven Metallfertigung unter Verwendung von Induktionserwärmung","authors":"A. Sihore,&nbsp;R. K. Choubey,&nbsp;P. K. Jain,&nbsp;M. Srivastava","doi":"10.1002/mawe.70061","DOIUrl":"10.1002/mawe.70061","url":null,"abstract":"<p>The use of induction heating as an energy source in extrusion-based metal additive manufacturing is gaining attention for its clean, safe, and precise heating. Melting aluminum filament within the extruder and depositing it can be challenging and requires careful control of temperature distribution which, in turn, depends on current and frequency. This study simulates a 2D axisymmetric model consisting of 8 mm outer radius extruder with 0.9 mm inner radius and induction coil using COMSOL Multiphysics software. The temperature distribution on extruder has been analysed by varying the coil current from 200 A to 300 A in steps, while keeping the frequency constant at 55 kHz. Simulation results show that at 200 A, as the extruder's outer surface reached 650 °C, the inner surface attains 610 °C temperature, which is sufficient to melt aluminum filament required for printing. A 40 °C temperature drop has been observed at the inner surface at 200 A, compared to 68 °C at 250 A and 99 °C at 300 A. Further, experimental validation confirmed the simulation results of less temperature drop at 200 A as compared to other current levels. Hence, this current level is preferred for printing aluminum with the developed setup, offering better thermal uniformity, smooth extrusion of molten materials and consistent layer deposition.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"5-16"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147562835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}