Materialwissenschaft und Werkstofftechnik最新文献

{"title":"RETRACTION: Explicit Microstructural Evolution and Electrochemical Performance of Value Added Palm Kernel Shell Ash Nanoparticle/A356 Alloy Composite\u0000 RETRACTION: Explizite Mikrostrukturelle Entwicklung Und Elektrochemisches Verhalten Eines Verbundwerkstoffes Aus Palmkernschalenasche-Nanopartikeln in Der Aluminiumlegierung AlSi7Mg","authors":"","doi":"10.1002/mawe.70010","DOIUrl":"https://doi.org/10.1002/mawe.70010","url":null,"abstract":"<p><b>RETRACTION</b>: I.C. Ezema and V.S. Aigbodion, “Explicit Microstructural Evolution and Electrochemical Performance of Value Added Palm Kernel Shell Ash Nanoparticle/A356 Alloy Composite [Explizite Mikrostrukturelle Entwicklung Und Elektrochemisches Verhalten Eines Verbundwerkstoffes Aus Palmkernschalenasche-Nanopartikeln in Der Aluminiumlegierung AlSi7Mg],” Materials Science and Engineering Technology 51, no. 3 (2020): 324-329, https://doi.org/10.1002/mawe.201900071.</p><p>The above article, published online on 17 March 2020 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Jörg Ellermeier; and Wiley-VCH GmbH. The retraction has been agreed upon following an investigation into concerns raised by a third party. The investigation revealed that elements from Figures 2, 3, and 4 were found to be duplicated in articles published elsewhere by one of the same authors. The figures containing the duplicates are described as representing different materials. The authors acknowledged the presence of the duplications and indicated that they occurred inadvertently. However, they were unable to produce any original data. Due to the extent and nature of the duplications, the editors consider the results and conclusions reported in this article unreliable. The authors were informed of the retraction.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 7","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144934823","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":"A review on density and surface tension of nanofluids\u0000 Eine Rezension zur Dichte und Oberflächenspannung von Nanoflüssigkeiten","authors":"M. Mehrabi,&nbsp;S. Sheikh","doi":"10.1002/mawe.70007","DOIUrl":"https://doi.org/10.1002/mawe.70007","url":null,"abstract":"<p>Nanofluids present unique characteristic density and surface behavior and they can be applied in many devices for better performances due to their enhanced thermophysical properties. Herein, a literature survey of the experimentally determined values for the density and surface tension of nanofluids has been carried out. In addition, accuracy and uncertainty measurements of the reviewed articles are analyzed and compared. Some of the well-known empirical models for estimating density and surface tension are included as well. The results revealed that density of nanofluids followed a same trend, where it showed a direct and an inverse relationship with concentration and temperature, respectively. But for surface tension of nanofluids, inconsistencies have been reported in results for the influence of concentration and temperature. Therefore, due to the increasing importance and use of nanofluids in various industries, it is vital to compile and compare studies on these thermophysical properties to practically utilize nanofluids to their full potential for industrial use.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 7","pages":"1005-1026"},"PeriodicalIF":1.1,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935379","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":"Effects of recycled powder on the microstructure and mechanical properties of TC4 alloy by selective laser melting\u0000 Auswirkungen von rezykliertem Pulver auf das Gefüge und die mechanischen Eigenschaften einer TC4-Legierung durch selektives Laserstrahlschmelzen","authors":"X. Y. Zhang,&nbsp;C. Guo,&nbsp;W. Q. Li,&nbsp;G. C. Huang,&nbsp;Q. C. Lin,&nbsp;C. Qin","doi":"10.1002/mawe.70003","DOIUrl":"https://doi.org/10.1002/mawe.70003","url":null,"abstract":"<p>Selective laser melting technology has demonstrated significant advantages in the processing of TC4 titanium alloy. While TC4 alloy exhibits outstanding properties, the economic viability of recycling its high-cost powder has become a focal point of interest. Experimental results indicate that as the number of powder recycling cycles increases, the microstructure of the TC4 components tends to degrade gradually. After multiple recycling cycles, the intensity of the crystal diffraction peaks diminishes, and the crystal structure undergoes changes due to oxidation, stress accumulation, and microstructural damage. The hardness of the components fluctuates with the increasing number of recycling cycles. Components made from non-recycled powder exhibit high tensile strength, but this strength gradually declines with additional recycling cycles, showing a brief recovery after 20 cycles. The impact toughness slightly improves after five recycling cycles, but it then continues to decrease, stabilizing after 30 cycles of recycling.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 7","pages":"947-956"},"PeriodicalIF":1.1,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935439","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 review on mechanical properties of walls fabricated by wire arc additive manufacturing for aluminum alloys\u0000 Überblick über die mechanischen Eigenschaften von Wänden, die durch additive Drahtlichtbogenfertigung für Aluminiumlegierungen hergestellt wurden","authors":"E. Shams,&nbsp;M. Abdelwahed,&nbsp;N. Ramadan,&nbsp;M. I. Awad,&nbsp;N. El Mahallawy,&nbsp;M. A. Taha","doi":"10.1002/mawe.70001","DOIUrl":"https://doi.org/10.1002/mawe.70001","url":null,"abstract":"<p>With the increasing demand for lightweight and high-performance components in industries such as aerospace, automotive, and marine, wire arc additive manufacturing has become an attractive manufacturing method due to its cost-effectiveness and ability to produce complex geometries. This review provides an in-depth analysis of the microstructure and mechanical properties of aluminum alloy walls produced using wire arc additive manufacturing. It explores the influence of various process parameters including voltage, current, travel speed, wire feeding rate, and shielding gas. The review emphasizes the importance of selecting suitable aluminum alloys, particularly highlighting the 5xxx series for their strong weldability and mechanical performance. Findings from recent research are compiled and presented in structured tables and figures to guide optimization of the process. Furthermore, the review identifies a need for further investigation into the 2xxx and 7xxx aluminum series, which offer higher strength but present challenges in terms of weldability and defect control. This work provides essential insights for improving outcomes in aluminum alloy manufacturing.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 7","pages":"925-946"},"PeriodicalIF":1.1,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935381","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":"Boron-doped lignin-based composites transforming textile waste into high-performance sustainable insulation materials\u0000 Bor-dotierte Verbundwerkstoffe auf Ligninbasis zur Verwandlung von Textilabfällen in nachhaltige Hochleistungsdämmstoffe","authors":"U. Erkarslan,&nbsp;D. Yavuzkasap Ayakta,&nbsp;G. Oylumluoglu","doi":"10.1002/mawe.70005","DOIUrl":"https://doi.org/10.1002/mawe.70005","url":null,"abstract":"<p>This study presents the development of boron-doped lignin-based composites reinforced with textile waste as a sustainable alternative to conventional insulation materials. By utilizing lignin, a byproduct of the paper industry, and textile waste from cotton and polyester blends, composites with varying boron concentrations (0 %, 5 %, and 10 %) were fabricated, evaluated for their thermal, acoustic, and fire-resistant properties. Among the samples, alb10 (10 % boron addition to pink cotton/polyester waste) exhibited exceptional performance, achieving a burning speed of 20 mm·s⁻¹, a significant reduction compared to 160 mm·s⁻¹ in the non-doped alb0 and a thermal conductivity of 0.04 W·mK⁻¹, comparable to commercial insulation materials. Compared to the reference material yltm (commercial felt), alb10 demonstrated superior fire resistance, enhanced thermal regulation, and improved acoustic insulation, underscoring boron's critical role as a flame-retardant additive. This work highlights the potential of boron-doped lignin-textile composites to address energy efficiency, fire safety, and waste management challenges, aligning with circular economy principles and offering a cost-effective, eco-friendly solution for future insulation applications.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 7","pages":"997-1004"},"PeriodicalIF":1.1,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935466","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. 6/2025","authors":"","doi":"10.1002/mawe.70012","DOIUrl":"https://doi.org/10.1002/mawe.70012","url":null,"abstract":"","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782498","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":"Cover Picture: (Materialwiss. Werkstofftech. 6/2025)","authors":"","doi":"10.1002/mawe.70011","DOIUrl":"https://doi.org/10.1002/mawe.70011","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":"56 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782496","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. 6/2025","authors":"","doi":"10.1002/mawe.70013","DOIUrl":"https://doi.org/10.1002/mawe.70013","url":null,"abstract":"","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 6","pages":"775-778"},"PeriodicalIF":1.1,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782499","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":"An analysis of technical and economic aspects of digital spare parts on variating materials in powder bed fusion of metals using a laser beam (PBF-LB/M)\u0000 Eine Analyse der technischen und wirtschaftlichen Aspekte digitaler Ersatzteile für unterschiedliche Materialien beim Pulverbettschmelzen von Metallen mit einem Laserstrahl (PBF-LB/M)","authors":"C. Rockinger,&nbsp;J. Tomas,&nbsp;M. Rupp,&nbsp;M. Sedlmajer,&nbsp;J. Kortsch-Banzhaf,&nbsp;M. Merkel","doi":"10.1002/mawe.1745","DOIUrl":"https://doi.org/10.1002/mawe.1745","url":null,"abstract":"<p>Conventional supply chains depend on spare part inventories for rapid failure response. Metal additive manufacturing enables decentralized, on-demand production, reducing inventory needs. Current research focuses on redesigning spare parts using failure data. Key aspects include lightweight design through generative topology optimization, material substitution, and cost analysis to improve efficiency. Generative design enhances performance while reducing material use and production costs, supporting sustainability. This is especially relevant in industries where weight and material savings improve performance and reduce expenses. This study presents an integrated approach combining material selection, bionic design, and cost estimation in metal additive manufacturing to evaluate decentralized spare part reproduction. Findings show that generative design enables fast, cost-effective, and sustainable improvements, supporting operational efficiency and environmental goals.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 6","pages":"884-892"},"PeriodicalIF":1.1,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.1745","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782250","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":"Electrochemical corrosion of copper-tin-nickel-phosphorus fillers for joining application: a case study on corrosion behavior of porous copper foam brazing using copper-tin-nickel-phosphorus fillers\u0000 Elektrochemische Korrosion von Kupfer-Zinn-Nickel-Phosphor Füllstoffen für Verbindungsanwendungen: Eine Fallstudie zum Korrosionsverhalten von porösem Kupferschaumlöten unter Verwendung von Kupfer-Zinn-Nickel-Phosphor Füllstoffen","authors":"N. A. Mohd Zahri,&nbsp;F. Yusof,&nbsp;T. Ariga,&nbsp;A. S. M. A. Haseeb,&nbsp;N. L. Sukiman","doi":"10.1002/mawe.1746","DOIUrl":"https://doi.org/10.1002/mawe.1746","url":null,"abstract":"<p>The brazing of porous copper foam (PCF) heat exchanger using copper-based filler of copper-tin-nickel-phosphorus (Cu-Sn-Ni-P) could lead to a corrosion when exposed to an aggressive environment. The research on corrosion of copper-based fillers and brazed joint interface between substrate and foam were carried out. The cyclic polarization of 10Sn6Ni7P, 9Sn7Ni6P and 4Sn10Ni8P fillers reveal that the corrosion potential (<i>E</i>_<i>corr</i>) was shifted from less noble to more noble potentials. While corrosion density (<i>I</i>_<i>corr</i>) shows 10Sn6Ni7P, 9Sn7Ni6P and 4Sn10Ni8P fillers shifted from more negative to more positive potentials. On the other hand, porous copper foam was brazed with copper using copper-based filler and immersed in 3.5 % sodium chloride (NaCl) for 7 days. Optical microscope (OM) shows a thicker patina layer formation on joining interface of copper/porous copper foam (Cu/PCF) using 10Sn6Ni7P filler after the immersion test. Scanning electron microscope (SEM) and energy-dispersive x-ray spectroscopy (EDX) discover a formation of copper chloride (CuCl) on the unclean immersed specimens and a copper (II) oxide (Cu₂O) compound on the clean immersed specimens. The chloride was found to selectively attack on the copper along the filler's area due to a more noble of copper phosphide (Cu₃P) compared to copper.</p><p>Das Löten von Wärmetauschern aus porösem Kupferschaum (PCF) mit einem kupferbasierten Füllstoff aus Kupfer-Zinn-Nickel-Phosphor (Cu-Sn-Ni-P) könnte zu Korrosion führen, wenn er einer aggressiven Umgebung ausgesetzt wird. Es wurden Untersuchungen zur Korrosion von Cu-basierten Füllstoffen und der Lötverbindungsschnittstelle zwischen Substrat und Schaum durchgeführt. Die zyklische Polarisation der Füllstoffe 10Sn6Ni7P, 9Sn7Ni6P und 4Sn10Ni8P zeigt, dass das Korrosionspotenzial (<i>E</i>_<i>corr</i>) von weniger edlen zu edleren Potenzialen verschoben wurde. Während die Korrosionsdichte (<i>I</i>_<i>corr</i>) bei den Füllstoffen 10Sn6Ni7P, 9Sn7Ni6P und 4Sn10Ni8P eine Verschiebung von negativeren zu positiveren Potenzialen zeigt. Andererseits wurde poröser Kupferschaum mit Kupfer unter Verwendung eines kupferbasierten Füllstoffs verlötet und 7 Tage lang in 3.5 % Natriumchlorid (NaCl) eingetaucht. Das optische Mikroskop (OM) zeigt nach dem Eintauchtest eine dickere Patinaschichtbildung an der Verbindungsschnittstelle von Cu/PCF unter Verwendung des Füllstoffs 10Sn6Ni7P. Durch Rasterelektronenmikroskopie (REM) und energiedispersive Röntgenspektroskopie (EDX) wird eine Bildung von Kupferchlorid (CuCl) auf den ungereinigten eingetauchten Proben und einer Kupfer(II)-oxid (Cu₂O)-Verbindung auf den gereinigten eingetauchten Proben dokumentiert. Es wurde festgestellt, dass das Chlorid das Kupfer im Bereich des Füllstoffs selektiv angreift, da Kupfer(I)-Phosphid (Cu₃P) im Vergleich zu Kupfer edler ist.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 6","pages":"779-789"},"PeriodicalIF":1.1,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782856","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}