Materialwissenschaft und Werkstofftechnik最新文献

{"title":"Moisture barrier properties of glass fiber reinforced nanocomposites for marine applications\u0000 Feuchtigkeitsbarriereeigenschaften von glasfaserverstärkten Nanokompositen für maritime Anwendungen","authors":"S. Rahman,&nbsp;R. S. Arun Sundar,&nbsp;A. V. Ramesh Kumar","doi":"10.1002/mawe.70145","DOIUrl":"https://doi.org/10.1002/mawe.70145","url":null,"abstract":"<p>Glass fiber reinforced polymers are widely used for broad structural applications, as they are lightweight and have high specific strength. However, its underwater structural applications were not much explored owing to the concern related to its moisture absorption and degradation of its properties. In this work, attempts have been made to evaluate the moisture barrier properties of glass fiber reinforced plastic nanocomposites fabricated using hydrophobic nanosilica (20 nm) in different compositions (0.1 % to 5 %) for marine applications. An increased filler concentration exhibits a slight improvement in the thermal stability, concluded by the thermogravimetric analysis (TGA). Also, the morphological study using scanning electron microscopy (SEM) confirms the uniform distribution of the glass fibre throughout the matrix. Water vapour transmission rate (WVTR) showed that the moisture transmission is reduced for nanocomposites, except for the highly filled composite, owing to the agglomeration of silica particles with high filler concentration. Moisture barrier studies at room temperature and 80 °C and at different hydrostatic pressures (10 bar, 30 bar, and 60 bar) of glass fiber reinforced plastic nanocomposites followed typical Fickian behaviour of water absorption, and these studies revealed that the nanocomposite with 0.1 weight percentage of silica exhibited higher moisture barrier property.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 7","pages":"699-707"},"PeriodicalIF":1.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699997","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":"Impressum: Materialwiss. Werkstofftech. 7/2026","authors":"","doi":"10.1002/mawe.70164","DOIUrl":"https://doi.org/10.1002/mawe.70164","url":null,"abstract":"","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 7","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70164","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148700068","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":"Enhancement of mechanical and metallurgical properties of brass tubes fabricated using friction stir back extrusion by optimizing the process parameters\u0000 Verbesserung der mechanischen und metallurgischen Eigenschaften von mit Rührreib-Rückwärtsfließpressen hergestellten Messingrohren durch Optimierung der Prozessparameter","authors":"A. Balajikrishnabharathi,&nbsp;G. Mahendran,&nbsp;S. Senthil Kumar,&nbsp;P. K. Chidambaram","doi":"10.1002/mawe.70155","DOIUrl":"https://doi.org/10.1002/mawe.70155","url":null,"abstract":"<p>The study is going to discuss the possibility of using the friction stir back extrusion (FSBE) in producing brass wires, specifically optimizing the process parameters to achieve higher ultimate tensile strength. Central composite design of experiments is utilized to systematically analyze the most crucial variables: feed rate, process temperature, and tool rotational speed, as they impact the mechanical characteristics of the wires produced. As revealed by analysis of variance analysis, the tool's rotational speed is significantly affecting tensile load, while feed rate does not have any significant effect. This test load reached the maximum tensile value of 676 MPa, which occurred due to optimal processing conditions of this experiment that were: rotation speed of 2400 min⁻¹, feed rate 0.7 mm/min and process temperature of 340 °C. Confirmation tests verify such results so the obtained optimization parameters are reliable and viable for processing. The research gives crucial insights into the industrial applications requiring superior mechanical properties and points out the importance of parameter optimization in friction stir back extrusion for the production of high-strength brass wires.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 7","pages":"655-666"},"PeriodicalIF":1.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699881","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":"A study on the synthesis and mechanical property assessment of calcium zirconate perovskite – mullite composites\u0000 Eine Studie zur Synthese und Bewertung der mechanischen Eigenschaften von Calcium-Zirkonat- Perowskit - Mullit-Verbundwerkstoffen","authors":"M. A. Hafızoğlu,&nbsp;T. Boyraz","doi":"10.1002/mawe.70141","DOIUrl":"https://doi.org/10.1002/mawe.70141","url":null,"abstract":"&lt;p&gt;This study investigates the physical, mechanical, microstructure analysis and wear properties of ceramic composites consisting of calcium zirconate, mullite and their mixtures in different proportions. Calcium zirconate, a multifunctional perovskite ceramic with promising applications in structural, catalytic, and biomedical fields, was reinforced with mullite to enhance its wear resistance. While pure calcium zirconate samples exhibited low physical and mechanical properties, the addition of mullite improved these properties generally. Increased mullite content significantly improved hardness, bending strength and wear resistance in all composites, particularly in the composite containing equal weight proportions of calcium zirconate and mullite (50 wt.-% calcium zirconate – 50 wt.-% mullite). The hardness of pure calcium zirconate was measured as 122.94 HV 1, whereas it reached 325.53 HV 1 for the composite containing 50 wt.-% calcium zirconate and 50 wt.-% mullite, indicating a significant improvement in mechanical performance. Similarly, the bending strength increased from 32.02 MPa to 98.68 MPa, and the wear volume of the composite was reduced by more than threefold compared to that of pure calcium zirconate, demonstrating enhanced tribological properties. The results indicate that mullite addition is an effective strategy for improving the mechanical properties and especially wear resistance of calcium zirconate ceramics.&lt;/p&gt;&lt;p&gt;Diese Studie untersucht die physikalischen, mechanischen und mikrostrukturellen Eigenschaften sowie das Verschleißverhalten von Keramikverbundwerkstoffen aus Calciumzirkonat, Mullit und deren Mischungen in unterschiedlichen Anteilen. Calciumzirkonat, eine multifunktionale Perowskitkeramik mit vielversprechenden Anwendungen in den Bereichen Strukturtechnik, Katalyse und Biomedizin, wurde mit Mullit verstärkt, um seine Verschleißfestigkeit zu erhöhen. Während reine Calciumzirkonatproben geringe physikalische und mechanische Eigenschaften aufwiesen, verbesserte die Zugabe von Mullit diese Eigenschaften im Allgemeinen. Ein erhöhter Mullitgehalt verbesserte Härte, Biegefestigkeit und Verschleißfestigkeit aller komposite signifikant, insbesondere des komposite mit gleichen Gewichtsanteilen an Calciumzirkonat und Mullit (50 Gew.-% Calciumzirkonat – 50 Gew.-% Mullit). Die Ergebnisse zeigen, dass die Zugabe von Mullit eine effektive Strategie zur Verbesserung der mechanischen Eigenschaften und insbesondere der Verschleißfestigkeit von Calciumzirkonatkeramiken darstellt. Diese Studie schließt eine wichtige Lücke in der Literatur hinsichtlich des Verschleißverhaltens von Calciumzirkonatkeramiken und unterstreicht das Potenzial von Calciumzirkonat-Mullit-Kompositen für strukturelle und biomedizinische Anwendungen. Die Härte von reinem Calciumzirkonat wurde mit 122,94 HV 1 gemessen, während sie für den Verbundwerkstoff mit 50 Gew.-% Calciumzirkonat und 50 Gew.-% Mullit 325,53 HV 1 erreichte, was eine deutliche Verbesserung der","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 7","pages":"687-698"},"PeriodicalIF":1.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148700093","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. 7/2026)","authors":"","doi":"10.1002/mawe.70165","DOIUrl":"https://doi.org/10.1002/mawe.70165","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 7","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70165","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148700050","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":"Assessment of mesh orientation, Arbitrary-Lagrangian-Eulerian remeshing and mass scaling in 3D finite-element modeling of thread-forming screw connections\u0000 Bewertung der Netzausrichtung, Arbitrary-Lagrangian-Eulerian-Neuvernetzung und Massenskalierung bei der 3D-Finite-Elemente-Modellierung von gewindefurchenden Schraubverbindungen","authors":"T. Binder,&nbsp;P. Reining,&nbsp;M. Klein,&nbsp;M. Oechsner","doi":"10.1002/mawe.70153","DOIUrl":"https://doi.org/10.1002/mawe.70153","url":null,"abstract":"<p>Plastic deformation occurring in the forming process during the assembly of thread-forming screw connections presents a significant challenge for accurate representation in finite element simulations. Among other parameters, the quality of results is largely influenced by the mesh design. With the intention of considering different meshing strategies of the nut component, this study examines the influence of mesh orientation, both straight and parallel to the thread helix, the mesh density, as well as the impact of mass scaling and Arbitrary-Lagrangian-Eulerian (ALE) adaptive remeshing operations. The quality of the results obtained was assessed by energy evaluations. Moreover, the size of the nut segment was investigated, revealing that a segment shaped by an angle of 45° around the longitudinal axis is sufficient to accurately represent the forming process and produces similar geometric formations compared to a 360° model. Improvements in results were further achieved by using Arbitrary-Lagrangian-Eulerian remeshing operations and a locally refined mesh. Applying mass scaling on highly deformed parts has a large effect on reducing calculation time, simultaneously enlarging element density, which can lead to minor deformation of the nut thread.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 7","pages":"672-686"},"PeriodicalIF":1.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70153","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699910","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":"Materialwiss. Werkstofftech. 7/2026","authors":"","doi":"10.1002/mawe.70163","DOIUrl":"https://doi.org/10.1002/mawe.70163","url":null,"abstract":"","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 7","pages":"645-647"},"PeriodicalIF":1.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148700069","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":"Damage detection in hot-dip galvanized structural steel using AC potential drop method\u0000 Schädigungsdetektion an feuerverzinktem Baustahl mittels Wechselstrom-Widerstandsmessung","authors":"A. K. Kraemer","doi":"10.1002/mawe.70154","DOIUrl":"https://doi.org/10.1002/mawe.70154","url":null,"abstract":"<p>This study presents an experimental investigation for the detection of fatigue damage in hot-dip galvanized structural steel using the alternating current potential drop (ACPD) method. Through cyclic bending and tension tests on samples subjected to different galvanizing processes, the method was established as a sensitive instrument for recording micro- and macro-crack formation. The analysis of the voltage gradient (d<i>u</i>/dN) showed characteristic changes long before macroscopically visible damage occurred, enabling the time-resolved differentiation between coating and substrate damage. Differences between normal-temperature (NTV) and high-temperature galvanizing (HTV) were analyzed, revealing that normal-temperature galvanized samples exhibited significantly faster crack propagation in the coating and a greater reduction in fatigue life. The results were validated using microscopic cross-sections and computed tomography. The method offers considerable potential for condition-based life-cycle monitoring of steel structures.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 7","pages":"667-671"},"PeriodicalIF":1.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70154","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699851","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":"Fatigue performance measurement of a secondary cast Al-Si-Cu-Mg alloy recycled from cylinder head with minor element additions","authors":"G. Nyiranzeyimana,&nbsp;B. R. Mose,&nbsp;T. O. Mbuya,&nbsp;F. Urimubenshi","doi":"10.1002/mawe.70118","DOIUrl":"https://doi.org/10.1002/mawe.70118","url":null,"abstract":"<p>This study systematically investigated the combined effects of minor additions of Sr, Fe, and Mn, together with T6 heat treatment, on intermetallic phase evolution and fatigue performance of a secondary Al-Si-Cu-Mag cast alloy. The alloy was obtained by melting end-of-life motor vehicle engine cylinder heads. Novelty of this work is based on the proposed recycling approach and the establishment of a direct correlation between intermetallic morphology modification and fatigue life in recycled cylinder head alloys. The base alloy exhibited coarse, needle-like eutectic silicon particles and Fe-rich intermetallic compounds such as Al₂Cu and AlCuNi. Addition of 0.02 wt.% Sr transformed silicon morphology into refined fibrous structure, while Fe and Mn additions modified the formation of Fe-rich phases into less harmful α-intermetallic phases. After T6 heat treatment, silicon particles became rounded and fragmented, and Al₂Cu phases fully dissolved. Among as-cast alloys, Sr-modified variant demonstrated highest fatigue life (610,399 cycles), confirming the beneficial role of microstructural refinement in delaying crack initiation. The findings demonstrated that controlled alloy modification combined with heat treatment enabled recycled Al–Si–Cu–Mg alloys achieve enhanced fatigue resistance. These results provide practical guidelines for producing reliable automotive powertrain components and contribute to sustainable materials engineering.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 7","pages":"648-654"},"PeriodicalIF":1.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148700036","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":"Parametric optimization of output responses in wire electrical discharge machining of inconel 718: An integrated TOPSIS-multi-objective ant-lion approach\u0000 Parametrische Optimierung der Ausgangsreaktionen bei der Drahterodierung von Inconel 718: Ein integrierter TOPSIS-Ansatz mit Mehrziel-Ant-Lion-Verfahren","authors":"A. G. Joshi,&nbsp;R. Suresh,&nbsp;M. Manjaiah,&nbsp;A. Soni","doi":"10.1002/mawe.70148","DOIUrl":"https://doi.org/10.1002/mawe.70148","url":null,"abstract":"<p>The research investigated the impact of process parameters namely; pulse on time, pulse-off time and peak current on crucial factors such as material removal rate, surface roughness and micro-hardness during the wire electrical discharge machining of inconel 718 alloy. The experimental trials were conducted by using a Taguchi L27 orthogonal array design method. The outcomes had observed an increase in pulse-on time corresponds to elevated micro hardness by 6 % and material removal rate by 18 %, while the surface roughness decreases by 61 %. Conversely, surface roughness was increased by 50 % with change in pulse-off time from 8 μs to 18 μs and peak current from 2 A to 4 A. The analysis of variance has observed pulse-on time as the most influential parameter for material removal rate, surface roughness, and micro-hardness which primarily associated with the formation of recast layer. The implementation of the multi-objective ant-lion optimization algorithm has successfully estimated the multiple pareto-optimal points across the parameter levels and response values. Moreover, the integrated Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS)-Multi-objective ant-lion optimization has facilitated the selection of the best optimal point from several pareto-optimal points and aids in decision-making process.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 7","pages":"708-722"},"PeriodicalIF":1.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699986","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}