Materialwissenschaft und Werkstofftechnik最新文献

{"title":"Deposition behaviour, optimisation, and coating quality of Al-19Zn friction-surfaced on low carbon steel\u0000 Beschichtungsverhalten, Optimierung und Beschichtungsqualität von Al-19Zn-Schichten auf kohlenstoffarmem Stahl","authors":"Vinodh S,&nbsp;Satishkumar P,&nbsp;B. Haldar,&nbsp;Ganvir V Y","doi":"10.1002/mawe.70166","DOIUrl":"https://doi.org/10.1002/mawe.70166","url":null,"abstract":"<p>This study examines deposition behaviour, process optimisation, and coating geometry for aluminium–19 wt.% zinc coatings on an AISI 1020 steel substrate using friction surfacing. Nine experimental runs were attempted by varying axial pressure, rotational speed, and feed rate in order to evaluate the coating's continuity and uniformity. Only a few coatings were free of defects across the full range of parameters (0.35 MPa – 0.6 MPa, 1150 min⁻¹ – 1350 min⁻¹, 55 mm/min – 80 mm/min). This shows that aluminium–19 wt.% zinc deposition is very sensitive to heat input and material flow. The Taguchi L9 optimisation method was used to make a comparison between coating width and thickness. Then, an analysis of variance showed that pressure was the most important factor. Regression models were created for coating width and coating thickness, and they matched the experimental results well and were tested for their ability to make accurate predictions. The best parameter combination was determined through contour and main-effect plots which showed that 0.5 MPa pressure; 1200 min⁻¹ speed; and 70 mm/min feed rate produced optimal results. Both experimental and statistical methods confirmed that friction surfacing could generate dense, uniform aluminium–19 wt.% zinc coatings, indicating their suitability for surface protection applications.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 8","pages":"807-818"},"PeriodicalIF":1.0,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148904345","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":"Experimental investigation of the influence of magnesium on the hardness, wear resistance and impact resistance of Al 6013 alloy\u0000 Experimentelle Untersuchung des Einflusses von Magnesium auf die Härte, Verschleißfestigkeit und Schlagzähigkeit der Aluminiumlegierung Al 6013","authors":"A. Thirunavukkarasu,&nbsp;R. Harini,&nbsp;S. Maelona Evelyn,&nbsp;R. Sundaramoorthy","doi":"10.1002/mawe.70162","DOIUrl":"https://doi.org/10.1002/mawe.70162","url":null,"abstract":"<p>The research investigates the effect of magnesium on the microstructure, hardness, wear resistance, and impact toughness of Al 6013 alloy manufactured by stir casting. The composition of the alloy was changed by adding 2 wt.% Mg and 4 wt.% Mg to determine their effects on the mechanical and tribological properties of the material. Apart from other methods to improve a material's properties, microstructural analysis along with 4 wt.% Mg was confirmed to be one of the strongest factors for the enhancement of the mechanical properties. It contributed to the homogeneous distribution of magnesium silicide precipitates whereas minor phases of aluminum copper intermetallic and aluminum–magnesium–silicon intermetallic as well as finer grain morphology were also present. The homogeneous distribution of secondary phases and strengthening in a solid solution revealed that 4 wt.% Mg was best for improving hardness, wear resistance, and impact toughness. Surpassing the magnesium limit of more than 4 wt.% could harm many aspects like that wear resistance and toughness were negatively affected, the excessive formation of intermetallic phases was resulted, and brittle behavior was increased in combination with other factors. Based on the results, a formula with 4 wt.% Mg is best suited for high performance structural works.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 8","pages":"819-832"},"PeriodicalIF":1.0,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148904347","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":"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}