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Processing conditions, structural evolution, and mechanical properties of Fe–28Al, prepared by two-step sintering technology Verarbeitungsbedingungen, Strukturentwicklung und mechanische Eigenschaften von Fe–28Al, hergestellt mittels einer zweistufigen Sintertechnologie Fe - 28Al的加工条件、结构演化和机械性能,采用两步烧结技术制备
IF 1 4区 材料科学
Materialwissenschaft und Werkstofftechnik Pub Date : 2026-09-30 Epub Date: 2026-09-11 DOI: 10.1002/mawe.70169
O. Tolochyna, O. Tolochyn, G. Bagliuk, Y. Podrezov, Y. Yevych, I. Okun
{"title":"Processing conditions, structural evolution, and mechanical properties of Fe–28Al, prepared by two-step sintering technology\u0000 Verarbeitungsbedingungen, Strukturentwicklung und mechanische Eigenschaften von Fe–28Al, hergestellt mittels einer zweistufigen Sintertechnologie","authors":"O. Tolochyna,&nbsp;O. Tolochyn,&nbsp;G. Bagliuk,&nbsp;Y. Podrezov,&nbsp;Y. Yevych,&nbsp;I. Okun","doi":"10.1002/mawe.70169","DOIUrl":"https://doi.org/10.1002/mawe.70169","url":null,"abstract":"<p>Two technological modes for the production of Fe-Al intermetallics were used: pressureless vacuum sintering of samples consolidated from a mixture of elementary powders or the mode including pre-sintering of consolidated samples at 1050 °C, their repressing, and subsequent high-temperature vacuum sintering. The effect of sintering temperature and mode of manufacturing on the phase composition, structure, and physical and mechanical properties of the intermetallic compound has been studied. It is shown that a significant increase in density and strength properties occurs at a sintering temperature exceeding 1350 °C. The use of the second mode for production with the sintering temperature of 1450 °C allows to obtain samples with a porosity that does not exceed 5 % with the best level of mechanical properties. The creep investigations of the obtained material show that the use of powder metallurgy technology allows to provide sufficiently high values of high-temperature properties of iron aluminide. The analysis of creep parameters of sintered iron aluminide at different temperatures and loads made it possible to establish the occurrence of mainly the dislocation mechanism of creep.</p><p><b>Zusammenfassung</b></p><p>Zur Herstellung von Fe-Al-Intermetallverbindungen wurden zwei technologische Verfahren eingesetzt: druckloses Vakuumsintern von aus einer Mischung elementarer Pulver verdichteten Proben sowie ein Verfahren mit Vorsintern der verdichteten Proben bei 1050 °C, anschließendem Nachpressen und nachfolgendem Hochtemperatur-Vakuumsintern. Der Einfluss der Sintertemperatur und des Herstellungsverfahrens auf die Phasenzusammensetzung, Mikrostruktur sowie die physikalischen und mechanischen Eigenschaften der Intermetallverbindung wurde untersucht. Es wurde gezeigt, dass bei Sintertemperaturen über 1350 °C eine deutliche Erhöhung der Dichte sowie der Festigkeitseigenschaften eintritt. Die Anwendung des zweistufigen Verfahrens mit einer Sintertemperatur von 1450 °C ermöglicht die Herstellung von Proben mit einer Porosität von weniger als 5 % und den besten mechanischen Eigenschaften. Kriechuntersuchungen des hergestellten Werkstoffs zeigen, dass die pulvermetallurgische Technologie ausreichend hohe Hochtemperatureigenschaften von Eisenaluminid gewährleistet. Die Analyse der Kriechparameter des gesinterten Eisenaluminids bei unterschiedlichen Temperaturen und Belastungen ergab, dass der Kriechvorgang überwiegend durch einen versetzungsgesteuerten Mechanismus bestimmt wird.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 9","pages":"860-879"},"PeriodicalIF":1.0,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149084168","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}
引用次数: 0
Cover Picture: (Materialwiss. Werkstofftech. 8/2026) 封面图片:(Materialwiss。Werkstofftech . 8/2026)
IF 1 4区 材料科学
Materialwissenschaft und Werkstofftechnik Pub Date : 2026-09-08 DOI: 10.1002/mawe.70175
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引用次数: 0
Influence of solution annealing and aging treatments on the electrochemical behavior of duplex stainless steel Einfluss von Lösungsglühen und Alterungsbehandlungen auf das elektrochemische Verhalten von Duplex-Edelstahl 溶液退火和老化处理对双工不锈钢电化学行为的影响
IF 1 4区 材料科学
Materialwissenschaft und Werkstofftechnik Pub Date : 2026-09-08 Epub Date: 2026-08-10 DOI: 10.1002/mawe.70158
H. N. Shridharmurthy, S. Channabasavaraj, V. Shamanth
{"title":"Influence of solution annealing and aging treatments on the electrochemical behavior of duplex stainless steel\u0000 Einfluss von Lösungsglühen und Alterungsbehandlungen auf das elektrochemische Verhalten von Duplex-Edelstahl","authors":"H. N. Shridharmurthy,&nbsp;S. Channabasavaraj,&nbsp;V. Shamanth","doi":"10.1002/mawe.70158","DOIUrl":"https://doi.org/10.1002/mawe.70158","url":null,"abstract":"<p>Duplex stainless steels are broadly employed in harsh environments because of their excellent combination of mechanical strength and corrosion resistance. But, exposure to temperatures near 475 °C can trigger microstructural degradation within the ferritic phase, which results in development of chromium enriched and Iron enriched nanophases. This transformation is known to cause embrittlement and significantly diminish corrosion resistance, affecting the durability. In this experimental study, the electrochemical performance of duplex stainless steel thermally aged at 475 °C was systematically evaluated, with emphasis on pitting corrosion resistance in both aerated 3.5 weight percent sodium chloride solution and carbon dioxide-saturated simulated oilfield brines. Electrochemical techniques were used to measure pitting breakdown potentials, while x-ray photoelectron spectroscopy was employed to characterize the passive film and investigate chloride ion incorporation. Results reveal a significant decline in corrosion resistance associated with thermally induced embrittlement. These outcomes emphasize need of carefully considering thermal exposure effects when deploying duplex stainless-steel components in service environments prone to aging.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 8","pages":"778-791"},"PeriodicalIF":1.0,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148904181","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}
引用次数: 0
Impressum: Materialwiss. Werkstofftech. 8/2026 刊头:Materialwiss .Werkstofftech . 8/2026
IF 1 4区 材料科学
Materialwissenschaft und Werkstofftechnik Pub Date : 2026-09-08 DOI: 10.1002/mawe.70172
{"title":"Impressum: Materialwiss. Werkstofftech. 8/2026","authors":"","doi":"10.1002/mawe.70172","DOIUrl":"https://doi.org/10.1002/mawe.70172","url":null,"abstract":"","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 8","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70172","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903810","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}
引用次数: 0
Materialwiss. Werkstofftech. 8/2026 Materialwiss .Werkstofftech . 8/2026
IF 1 4区 材料科学
Materialwissenschaft und Werkstofftechnik Pub Date : 2026-09-08 DOI: 10.1002/mawe.70176
{"title":"Materialwiss. Werkstofftech. 8/2026","authors":"","doi":"10.1002/mawe.70176","DOIUrl":"https://doi.org/10.1002/mawe.70176","url":null,"abstract":"","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 8","pages":"725-728"},"PeriodicalIF":1.0,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903808","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}
引用次数: 0
Study on the microstructure and properties of Ti6Al4V lattice structure formed by selective laser melting Die Untersuchung der Mikrostruktur und Eigenschaften der Ti6Al4V-Gitterstruktur, die durch selektives Laserschmelzen gebildet wurde 选择性激光熔化形成的Ti6Al4V晶格结构的微观结构和性质研究
IF 1 4区 材料科学
Materialwissenschaft und Werkstofftechnik Pub Date : 2026-09-08 Epub Date: 2026-07-19 DOI: 10.1002/mawe.70156
X. Y. Zhang, C. Guo, R. Z. Hu, Q. C. Lin, C. Qin, F. J. Ding
{"title":"Study on the microstructure and properties of Ti6Al4V lattice structure formed by selective laser melting\u0000 Die Untersuchung der Mikrostruktur und Eigenschaften der Ti6Al4V-Gitterstruktur, die durch selektives Laserschmelzen gebildet wurde","authors":"X. Y. Zhang,&nbsp;C. Guo,&nbsp;R. Z. Hu,&nbsp;Q. C. Lin,&nbsp;C. Qin,&nbsp;F. J. Ding","doi":"10.1002/mawe.70156","DOIUrl":"https://doi.org/10.1002/mawe.70156","url":null,"abstract":"<p>This study employed selective laser melting technology to fabricate four lattice structures (body centered cubic, body centered cubic with simple cubic, face centered cubic, and face centered cubic with simple cubic) of Ti6Al4V, and systematically compared their porosity, phase composition, microstructure, and properties. The research results showed that the actual porosity of all structures was lower than the theoretical design value. All structures primarily consisted of acicular α′ martensite with a small amount of residual β phase. The Body centered cubic structure exhibited the shortest acicular flat noodles and the most uniform microstructure; the Body centered cubic with simple cubic structure had hole defects at the nodes. The Face centered cubic with simple cubic structure exhibited the highest tensile strength, while the Body centered cubic structure had the lowest tensile strength; the Face centered cubic with simple cubic structure had the best compressive properties. The addition of the simple cubic structure suppressed excessive bending of the oblique struts and promoted a partial transition from bending to tensile dominant mechanism, thereby improving the ductility and collapse resistance of the structure; the addition of the simple cubic structure significantly enhanced the impact resistance of the formed parts.</p><p>Diese Studie verwendete die selektive Laserschmelztechnologie, um vier Gitterstrukturen (kubisch-raumzentriert, kubisch-raumzentriert mit kubisch-einfach, kubisch-flächenzentriert und kubisch-flächenzentriert mit kubisch-einfach) aus Ti6Al4V herzustellen und systematisch deren Porosität, Phasenzusammensetzung, Mikrostruktur und Eigenschaften zu vergleichen. Die Forschungsergebnisse zeigten, dass die tatsächliche Porosität aller Strukturen niedriger war als der theoretische Designwert. Alle Strukturen bestanden hauptsächlich aus feingestreiftem α′-Martensit mit einer geringen Menge an verbleibender β-Phase. Die kubisch-raumzentrierte Struktur wies die kürzesten feingestreiften Flachnadeln und die gleichmäßigeste Mikrostruktur auf; die kubisch-raumzentrierte mit kubisch-einfacher Struktur hatte Hohlräume an den Knotenpunkten. Die kubisch-flächenzentrierte mit kubisch-einfacher Struktur zeigte die höchste Zugfestigkeit, während die kubisch-raumzentrierte Struktur die niedrigste Zugfestigkeit aufwies; die kubisch-flächenzentrierte mit kubisch-einfacher Struktur hatte die besten Druckeigenschaften. Die Hinzufügung der kubisch-einfachen Struktur unterdrückte die übermäßige Biegung der schrägen Stützen und förderte einen teilweisen Übergang von einem biege- zu einem druckdominierten Mechanismus, wodurch die Duktilität und Kollapsresistenz der Struktur verbessert wurden; die Hinzufügung der kubisch-einfachen Struktur verbesserte die Schlagfestigkeit der gebildeten Teile erheblich.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 8","pages":"764-777"},"PeriodicalIF":1.0,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148904099","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}
引用次数: 0
Rotational ultrasonication assisted stir casting of ZE43 hybrid nanocomposites: A response surface methodology-based analysis of processing parameters on mechanical properties Rotationsultraschallunterstütztes Rührgießen von ZE43-Hybrid-Nanoverbundwerkstoffen: Eine auf der Antwort-Oberflächen-Methodik basierende Analyse des Einflusses von Verarbeitungsparametern auf die mechanischen Eigenschaften Rotational ultrasonication assisted stir试镜《ZE43混血儿nanocomposites: A response methodology-based想通过微积分的加工参数on mechanical properties Rotationsultraschallunterstütztes Rührgießen ZE43-Hybrid-Nanoverbundwerkstoffen:基于Antwort-Oberflächen-Methodik的分析从Verarbeitungsparametern机械特性的影响
IF 1 4区 材料科学
Materialwissenschaft und Werkstofftechnik Pub Date : 2026-09-08 Epub Date: 2026-08-09 DOI: 10.1002/mawe.70159
D. Arun, P. Lakshmanan, R. Praveen, M. Sunil Kumar, S. Cyril Joseph Daniel
{"title":"Rotational ultrasonication assisted stir casting of ZE43 hybrid nanocomposites: A response surface methodology-based analysis of processing parameters on mechanical properties\u0000 Rotationsultraschallunterstütztes Rührgießen von ZE43-Hybrid-Nanoverbundwerkstoffen: Eine auf der Antwort-Oberflächen-Methodik basierende Analyse des Einflusses von Verarbeitungsparametern auf die mechanischen Eigenschaften","authors":"D. Arun,&nbsp;P. Lakshmanan,&nbsp;R. Praveen,&nbsp;M. Sunil Kumar,&nbsp;S. Cyril Joseph Daniel","doi":"10.1002/mawe.70159","DOIUrl":"https://doi.org/10.1002/mawe.70159","url":null,"abstract":"<p>Magnesium alloys are gaining significant applications in the automobile, aerospace, and biomedical industries due to their high specific strength and low density. However, they are limited by factors such as low ductility and irregular nanoparticle distribution for higher concentrations of reinforcements, hindering their extensive utilization. To address these limitations, this present study investigates the synthesis of ZE43 magnesium alloy-based hybrid nanocomposites through a novel rotational ultrasonication-assisted stir casting (RUSC) technique. The multiwall carbon nanotubes (MWCNT) and hexagonal boron nitride (h-BN) are used as hybrid reinforcements, with 2 weight percentage each. The synergistic effect of rotational stirring and ultrasonication process parameters on hybrid reinforcement dispersion is studied. Statistically, modeling and optimization of the process parameters were done using response surface methodology (RSM), namely, rotational stirring speed, ultrasonication power, and ultrasonication time. The nanocomposites produced were subjected to characterization for the mechanical properties, i.e., microhardness and tensile strength. The optimized parameter showed outstanding improvement in the mechanical properties of the nanocomposites due to efficient nanoparticle dispersion and proper interfacial bonding, which is attributed to the rotational ultrasonication-assisted stir casting process.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 8","pages":"738-753"},"PeriodicalIF":1.0,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148904077","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}
引用次数: 0
Sustainable erosion-resistant composites: Role of alkali treatment in pine fibre reinforcement Nachhaltige erosionsbeständige Verbundwerkstoffe: Rolle der Alkalibehandlung bei der Verstärkung von Kiefernfasern 可持续的抗侵蚀复合材料:碱性处理在松树纤维增强中的作用可持续的抗侵蚀复合材料:碱性处理在松树纤维增强中的作用
IF 1 4区 材料科学
Materialwissenschaft und Werkstofftechnik Pub Date : 2026-09-08 Epub Date: 2026-08-09 DOI: 10.1002/mawe.70160
P. Sharma, A. Vats, Y. K. Sharma, G. S. Dangayach, A. Patnaik
{"title":"Sustainable erosion-resistant composites: Role of alkali treatment in pine fibre reinforcement\u0000 Nachhaltige erosionsbeständige Verbundwerkstoffe: Rolle der Alkalibehandlung bei der Verstärkung von Kiefernfasern","authors":"P. Sharma,&nbsp;A. Vats,&nbsp;Y. K. Sharma,&nbsp;G. S. Dangayach,&nbsp;A. Patnaik","doi":"10.1002/mawe.70160","DOIUrl":"https://doi.org/10.1002/mawe.70160","url":null,"abstract":"&lt;p&gt;Epoxy composites reinforced with pine fibres were fabricated by hand lay-up at fibre loadings of 4 wt.%, 7 wt.%, 10 wt.%, and 13 wt.%. The fibres were sodium hydroxide (NaOH) treated to enhance interfacial adhesion, and the composites evaluated for mechanical and erosion wear performance. At 10 wt.%, hardness, tensile, flexural, impact, and interlaminar shear strength improved by 18.6 %, 70.5 %, 100.4 %, 89.5 %, and 270.8 %, respectively, over the 4 wt.% composite. Air-jet erosion was studied using quartz sand (≤75 μm) under steady-state conditions. Peak erosion occurred at 60°–75° impingement angles, indicating semi-ductile behaviour; the erosion rate decreased with fibre content up to 10 wt.%. A Taguchi L16-ANOVA identified fibre content as the most influential parameter, followed by impact velocity, erodent feed rate, and impingement angle, while scanning electron microscopy (SEM) analysis revealed micro-cracking, cutting, delamination, and plastic deformation. The novelty of this work lies in the combined use of NaOH-treated Himalayan pine (Pinus roxburghii) needle fibre, a reinforcement seldom examined in erosion studies, together with integated mechanical, dynamic mechanical, and erosion characterisation across fibre loadings, and a Taguchi L16-ANOVA framework that ranks the factors governing erosive wear and identifies 10 wt.% as the optimum loading.&lt;/p&gt;&lt;p&gt;Epoxidharz-Verbundwerkstoffe, verstärkt mit Kiefernfasern, wurden im Handlaminierverfahren mit Faseranteilen von 4 Gew.-%, 7 Gew.-%, 10 Gew.-% und 13 Gew.-% hergestellt. Die Fasern wurden mit Natriumhydroxid (NaOH) behandelt, um die Grenzflächenhaftung zu verbessern. Anschließend wurden die Verbundwerkstoffe hinsichtlich ihrer mechanischen Eigenschaften und ihres Verschleißverhaltens untersucht. Bei einem Faseranteil von 10 Gew.-% verbesserten sich Härte, Zugfestigkeit, Biegefestigkeit, Schlagfestigkeit und Zwischenlagenscherfestigkeit im Vergleich zum Verbundwerkstoff mit 4 Gew.-% um 18,6 %, 70,5 %, 100,4 %, 89,5 % bzw. 270,8 %. Die Luftstrahlerosion wurde mit Quarzsand (≤ 75 μm) unter stationären Bedingungen untersucht. Die maximale Erosion trat bei Auftreffwinkeln von 60°–75° auf, was auf ein semiduktiles Verhalten hindeutet. Die Erosionsrate sank mit steigendem Faseranteil bis zu 10 Gew.-%, bevor sie wieder leicht anstieg. Ein Taguchi-L16-Versuchsplan mit ANOVA identifizierte den Fasergehalt als einflussreichsten Parameter, gefolgt von Aufprallgeschwindigkeit, Erosionsfördermenge und Aufprallwinkel. Die -Analyse zeigte Mikrorisse, Schnitte, Delaminationen und plastische Verformung. Die Neuheit dieser Arbeit liegt in der kombinierten Verwendung von mit NaOH behandelten Nadelfasern der Himalaya-Kiefer (Pinus roxburghii), einem in Erosionsstudien selten untersuchten Verstärkungsmaterial, zusammen mit einer integrierten mechanischen, dynamisch-mechanischen und Luftstrahl-Erosionscharakterisierung bei vier Faserbeladungen. Ein Taguchi-L16-ANOVA-Framework ordnet die Faktoren, die den er","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 8","pages":"792-806"},"PeriodicalIF":1.0,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148904079","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}
引用次数: 0
Assessment of surface hardness and tribological behavior of friction stir processed Mg-3Zn squeeze casted alloy for lightweight applications Bewertung der Oberflächenhärte und des tribologischen Verhaltens einer durch Reibrühren bearbeiteten Mg-3Zn-Squeeze-Cast-Legierung für Leichtbauanwendungen 用于轻量化应用的加工Mg-3Zn挤压铸造合金的表面硬度和摩擦学行为的评估
IF 1 4区 材料科学
Materialwissenschaft und Werkstofftechnik Pub Date : 2026-09-08 Epub Date: 2026-03-19 DOI: 10.1002/mawe.70105
K. Gajanan Chandrashekar, V. Packkirisamy, S. Kumar, D. Ratnam Srinivasan, R. G. Padmanabhan
{"title":"Assessment of surface hardness and tribological behavior of friction stir processed Mg-3Zn squeeze casted alloy for lightweight applications\u0000 Bewertung der Oberflächenhärte und des tribologischen Verhaltens einer durch Reibrühren bearbeiteten Mg-3Zn-Squeeze-Cast-Legierung für Leichtbauanwendungen","authors":"K. Gajanan Chandrashekar,&nbsp;V. Packkirisamy,&nbsp;S. Kumar,&nbsp;D. Ratnam Srinivasan,&nbsp;R. G. Padmanabhan","doi":"10.1002/mawe.70105","DOIUrl":"https://doi.org/10.1002/mawe.70105","url":null,"abstract":"<p>Magnesium alloys are promising candidates for lightweight structural applications; however, their limited hardness and wear resistance restrict wider use, particularly in power train and transmission system components. In this study, friction stir processing (FSP) was employed to improve the surface properties of squeeze-casted Mg–3Zn alloy. Optical microstructural analysis revealed significant grain refinement in the processed zone, with the average grain size reduced from 55 μm to 6 μm due to dynamic recrystallization. The refined equiaxed grains and increased high-angle grain boundary density contributed to grain-boundary strengthening, consistent with the Hall–Petch mechanism, resulting in a 76 % increase in surface microhardness (67 HV to 118 HV). Tribological evaluation under applied loads of 15 N–45 N demonstrated superior wear resistance of the friction stir processed alloy, with a 48.5 % reduction in wear loss at 15 N and lower coefficients of friction compared to the as-cast alloy. Worn surface analysis indicated abrasion and oxidation at lower loads, while delamination dominated at higher loads. The enhanced tribological performance confirms the suitability of friction stir processed Mg–3Zn alloy for lightweight power train and transmission applications.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 8","pages":"729-737"},"PeriodicalIF":1.0,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148904294","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}
引用次数: 0
Multiscale modelling of single lap adhesive joints reinforced with multi-walled carbon nanotubes (MWCNT) and boron nitride nanotubes (BNT) to study the mechanical behaviour of the bounded joints Mehrskalenmodellierung von einzelnen, mit mehrwandigen Kohlenstoffnanoröhren (MWCNT) und Bornitrid-Nanoröhren (BNT) verstärkten Klebeverbindungen zur Untersuchung des mechanischen Verhaltens Multiscale modelling of单身lap adhesive大麻reinforced和multi-walled碳nanotubes (MWCNT)和番茄汁nitride nanotubes (BNT)《犹如《mechanical而言,bounded大麻Mehrskalenmodellierung mehrwandigen一(MWCNT)和各会员国提供的Bornitrid-Nanoröhren (BNT)加强Klebeverbindungen调查的机械行为
IF 1 4区 材料科学
Materialwissenschaft und Werkstofftechnik Pub Date : 2026-09-08 Epub Date: 2026-08-28 DOI: 10.1002/mawe.70167
M. Potlapalli, C. Parvathi Rudesh, H. Jeevan Rao
{"title":"Multiscale modelling of single lap adhesive joints reinforced with multi-walled carbon nanotubes (MWCNT) and boron nitride nanotubes (BNT) to study the mechanical behaviour of the bounded joints\u0000 Mehrskalenmodellierung von einzelnen, mit mehrwandigen Kohlenstoffnanoröhren (MWCNT) und Bornitrid-Nanoröhren (BNT) verstärkten Klebeverbindungen zur Untersuchung des mechanischen Verhaltens","authors":"M. Potlapalli,&nbsp;C. Parvathi Rudesh,&nbsp;H. Jeevan Rao","doi":"10.1002/mawe.70167","DOIUrl":"https://doi.org/10.1002/mawe.70167","url":null,"abstract":"<p>Multiscale modelling enabled a systematic investigation of titanium alloy (Ti-6Al-4V) single-lap adhesive joints using Araldite 2015 epoxy reinforced with multi-walled carbon nanotubes (MWCNTs) and single-walled boron nitride nanotubes (SWBNTs). A hybrid approach integrates Digi-mat's nanoscale mean-field homogenization for predicting effective nanocomposite properties with Abaqus-based macroscale joint simulations under mechanical loading. Six adhesive configurations are analyzed, neat epoxy, multi-walled carbon nanotubes-reinforced (1 wt.-%–3 wt.-%), and single-walled boron nitride nanotubes-reinforced (1 wt.-% and 3 wt.-%). Results demonstrate progressive longitudinal modulus enhancements of 8.69 %, 16.22 %, and 23.89 % for 1 wt.-%–3 wt.-% multi-walled carbon nanotubes, outperforming single-walled boron nitride nanotubes (8.50 % at 1 wt.-%, 23.53 % at 3 wt.-%). The 3 wt.-% multi-walled carbon nanotubes adhesive achieved optimal performance, increasing the peel stress concentration by 10% and shear stress localization by 1.2 %, compared to neat epoxy, attributed to improved load transfer and crack resistance. Stress pattern analysis shows that the multi-walled carbon nanotubes more effectively reduce edge stress singularities, with 3 wt.-% balancing viscosity limitations and mechanical gains. Single-walled boron nitride nanotubes exhibit reduced efficiency despite quality modulus gains at 3 wt.-%, highlighting multi-walled carbon nanotubes superior reinforcement capacity. These outcomes overview the practicality of 3 wt.-% multi-walled carbon nanotubes-epoxy adhesives for aerospace and automotive industries, offer higher peel strength than neat epoxy while keeping up lightweight characteristics.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 8","pages":"754-763"},"PeriodicalIF":1.0,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148904316","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}
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