Materialwissenschaft und Werkstofftechnik最新文献_第4页

Processing and characterization of waste dolomite dust filled hemp-epoxy composites Verarbeitung und Charakterisierung von mit Dolomitabfall gefüllten Hanf-Epoxid-Verbundwerkstoffen 废白云石粉填充麻-环氧复合材料的加工和表征废白云石粉填充麻-环氧复合材料的加工和表征

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-10-28 DOI: 10.1002/mawe.202300314

S. Maurya, S. K. Mahapatra, A. Satapathy

{"title":"Processing and characterization of waste dolomite dust filled hemp-epoxy composites\u0000 Verarbeitung und Charakterisierung von mit Dolomitabfall gefüllten Hanf-Epoxid-Verbundwerkstoffen","authors":"S. Maurya, S. K. Mahapatra, A. Satapathy","doi":"10.1002/mawe.202300314","DOIUrl":"https://doi.org/10.1002/mawe.202300314","url":null,"abstract":"The necessity to adapt sustainable development, green chemistry and industrial ecology leads to the creation of newer materials and the utilization of waste. In this context, this work aims at exploring the feasibility of the fabrication of hybrid composites comprised of a polymeric resin reinforced with a natural fiber (hemp) and an industry waste filler (dolomite dust). While the hemp fiber content is kept constant, epoxy-based hybrid composites are fabricated with different weight percentages of dolomite dust using the conventional hand lay-up route. The microstructural features of the constituent materials are studied using stereo and scanning electron microscopes which show the shape and size of dolomite particles and the arrangement of fibers. An x-ray diffraction analysis revealed the presence of hematite, graphite, lime and manganite. The presence of functional groups like hydroxyl, carboxyl and azide is ascertained from the transmittance spectra of Fourier transform infrared spectroscopy. The density and void fractions are increasing with the amount of filler particles in the composite. It is observed that the tensile and flexural strengths of the composites marginally drop with increase in dolomite dust content, but there is a reasonable improvement in their inter-laminar shear strength, micro-hardness and impact strength values.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"55 10","pages":"1406-1417"},"PeriodicalIF":1.2,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540975","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

Influence of mixed particle sizes on shear yield stress of magnetorheological fluid Einfluss von gemischten Partikelgrößen auf die Scherfließspannung einer magnetorheologischen Flüssigkeit 混合颗粒尺寸对磁流变液剪切屈服应力的影响混合颗粒尺寸对磁流变液剪切屈服应力的影响

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-10-22 DOI: 10.1002/mawe.202400093

X. H. Liu, W. T. Zhou, P. P. Yan, Z. M. Fu, Y. Wu, X. Y. He, F. Li

引用次数: 0

Evaluating storage conditions on the effect of peroxide content in acrylonitrile Bewertung der Lagerungsbedingungen und der Auswirkungen des Peroxidgehaltes in Acrylnitril 评估储存条件对丙烯腈中过氧化物含量的影响评估储存条件和丙烯腈中过氧化物含量的影响

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-10-22 DOI: 10.1002/mawe.202400068

X. Li, S. Zhang, T. Liu, H. Li, X. Sui

引用次数: 0

Simulation and experimental study on surface modification of 6061-T651 aluminum alloy by machine hammer peening Simulation und experimentelle Studie zur Oberflächenmodifikation von der Aluminiumlegierung 6061-T651 durch maschinelles Hammerstrahlen 机器锤击强化 6061-T651 铝合金表面改性的模拟和实验研究机器锤击强化 6061-T651 铝合金表面改性的模拟和实验研究

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-10-22 DOI: 10.1002/mawe.202400007

X. Lin, J. Xu, G. Sun

{"title":"Simulation and experimental study on surface modification of 6061-T651 aluminum alloy by machine hammer peening\u0000 Simulation und experimentelle Studie zur Oberflächenmodifikation von der Aluminiumlegierung 6061-T651 durch maschinelles Hammerstrahlen","authors":"X. Lin, J. Xu, G. Sun","doi":"10.1002/mawe.202400007","DOIUrl":"https://doi.org/10.1002/mawe.202400007","url":null,"abstract":"Machine hammer peening is a surface treatment technique employed to enhance the surface properties of the treated samples. In this present work, the theoretical analysis, finite element simulation and experiment of single peening are carried out to investigate the relationship between the machine hammer peening force and geometric dimensions of the single peening indentation deformation, including diameter and depth. The single peening experimental results are in accordance with theoretical and simulation analysis. The machine hammer peening experiment with grate tool path are done and the results including surface topography, surface roughness, surface hardness, x-ray diffraction analysis and wear resistance are discussed. This work seeks to explore the effects of process parameters like machine hammer peening force, indentation and pitch spacing on surface roughness and hardness. The results reveal that the surface hardness and roughness are positively associated with machine hammer peening force and small indentation and pitch spacing lead to high hardness. The x-ray diffraction analysis validate machine hammer peening is a mechanical treatment without new compound generated. The friction test results in an enhancement in wear resistance of treated samples.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"55 10","pages":"1333-1345"},"PeriodicalIF":1.2,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540932","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

Optimization of laser powder bed fusion process parameter for the fabrication of AlSi12 using NSGA-II and Pareto search algorithm Optimierung der Prozessparameter für das Laserstrahl-Pulverbett-Schmelzen zur Herstellung von AlSi12 mit NSGA-II und Pareto-Suchalgorithmus 利用 NSGA-II 和帕累托搜索算法优化制造 AlSi12 的激光粉末熔床工艺参数利用 NSGA-II 和帕累托搜索算法优化制造 AlSi12 的激光粉末熔床工艺参数

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-10-22 DOI: 10.1002/mawe.202400098

S. K. Balla, R. K. Konki, M. Manjaiah, A. Joshi

{"title":"Optimization of laser powder bed fusion process parameter for the fabrication of AlSi12 using NSGA-II and Pareto search algorithm\u0000 Optimierung der Prozessparameter für das Laserstrahl-Pulverbett-Schmelzen zur Herstellung von AlSi12 mit NSGA-II und Pareto-Suchalgorithmus","authors":"S. K. Balla, R. K. Konki, M. Manjaiah, A. Joshi","doi":"10.1002/mawe.202400098","DOIUrl":"https://doi.org/10.1002/mawe.202400098","url":null,"abstract":"Additive manufacturing, notably laser powder bed fusion (LPBF), excels in producing complex geometries and is widely used in the automotive, aerospace, and naval industries. Laser powder bed fusion enables the creation of components with the required stiffness and strength at a lighter weight than traditional manufacturing methods. Aluminium alloys are particularly promising for laser powder bed fusion in the automotive and aerospace sectors. To enhance the effectiveness of laser powder bed fusion-produced components, optimized process parameters must be designed for specific materials. This study investigates the influence of processing parameters, scan speed, scan strategy, and hatch space, on the relative density, surface roughness, and microhardness of AlSi12 samples fabricated by laser powder bed fusion. A Taguchi L27 orthogonal array was used to systematically analyze the effects of these parameters. A regression model was developed and evaluated through analysis of variance using signal-to-noise (S/N) ratios to identify optimal parameter values. Results indicated that the scan pattern significantly affects relative density, while hatch space impacts surface roughness and microhardness. Optimal solutions were obtained through multi-objective optimization using the non-dominated sorting genetic algorithm (NSGA-II) and Pareto search algorithms. Experimental validation showed average errors of 0.483 % and 0.461 % for NSGA-II and Pareto search algorithms, respectively.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"55 11","pages":"1575-1589"},"PeriodicalIF":1.2,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692101","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

In situ digital image correlation study on the mechanical properties of GH4169 at different temperatures In-situ-Studie zur digitalen Bildkorrelation der mechanischen Eigenschaften von GH4169 bei verschiedenen Temperaturen 不同温度下 GH4169 力学性能的原位数字图像相关性研究不同温度下 GH4169 力学性能的原位数字图像相关性研究

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-10-22 DOI: 10.1002/mawe.202300392

X. Y. Wu, J. Zhu, J. W. Liu, S. Y. Wang, X. H. Hou, X. Jiang, F. C. Lang, Y. M. Xing

{"title":"In situ digital image correlation study on the mechanical properties of GH4169 at different temperatures\u0000 In-situ-Studie zur digitalen Bildkorrelation der mechanischen Eigenschaften von GH4169 bei verschiedenen Temperaturen","authors":"X. Y. Wu, J. Zhu, J. W. Liu, S. Y. Wang, X. H. Hou, X. Jiang, F. C. Lang, Y. M. Xing","doi":"10.1002/mawe.202300392","DOIUrl":"https://doi.org/10.1002/mawe.202300392","url":null,"abstract":"GH4169 is a precipitation-strengthened nickel-based high-temperature alloy, and its mechanical behavior at different temperatures is of significant importance for practical applications. Here, an in situ study on the mechanical properties and microstructural evolution of the GH4169 alloy at different temperatures was conducted using scanning electron microscopy in combination with digital image correlation. The results demonstrate the existence of a linear relationship between the local average strain and the macroscopic strain. At temperatures of 20 °C, 100 °C, 180 °C, and 260 °C, the local average strain is 1.96, 2.13, 2.26, and 2.30 times the macroscopic strain, respectively, which shows a clear trend. This indicates that the temperature has a significant influence on the plasticity of the alloy. Additionally, the strain is concentrated below the notch, whereby at a macroscopic strain of 1.7 % at 20 °C and 260 °C, the local maximum strain at the notch is 52 % and 83 %, respectively. Furthermore, when the macroscopic strain reaches 2.12 %, the local maximum strain at the notch is 72 % and 103 %, respectively. At this point, cracks start to initiate and gradually propagate. In situ observations show that at the beginning of the tensile plasticity stage, the plastic strain rate in the grains is twice the rate at the grain boundaries; subsequently, both rates tend to stabilize, and a high-strain zone appears inside the grains and is coordinately transferred to the surrounding grains through the grain boundaries. The final stage of damage of the alloy consists of perforation fracture, and the presence of a large number of cracked carbides at the fracture results in specimen cracking.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"55 11","pages":"1549-1561"},"PeriodicalIF":1.2,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142685323","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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Impressum: Materialwiss. Werkstofftech. 9/2024 版本说明：Materialwiss.9/2024

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-09-08 DOI: 10.1002/mawe.202480921

引用次数: 0

Materialwiss. Werkstofftech. 9/2024 材料科学材料技术 9/2024

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-09-08 DOI: 10.1002/mawe.202480911

引用次数: 0

Cover Picture: (Materialwiss. Werkstofftech. 9/2024) 封面图片： (Materialwiss. Werkstofftech. 9/2024)

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-09-08 DOI: 10.1002/mawe.202480901

引用次数: 0

Correction to “Use of a low transformation temperature effect for the targeted reduction of welding distortion in stainless chromium-nickel steel for an application in rail vehicle construction” 对 "利用低转变温度效应有针对性地减少不锈铬镍钢的焊接变形，以应用于轨道车辆制造 "的更正

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-09-08 DOI: 10.1002/mawe.202477164

{"title":"Correction to “Use of a low transformation temperature effect for the targeted reduction of welding distortion in stainless chromium-nickel steel for an application in rail vehicle construction”","authors":"","doi":"10.1002/mawe.202477164","DOIUrl":"https://doi.org/10.1002/mawe.202477164","url":null,"abstract":"M. Gamerdinger, F. Akyel, S. Olschok, C. Kahve, D.C. Fritsche, U. Elliesen, C. Hopmann, U. Reisgen. Use of a low transformation temperature effect for the targeted reduction of welding distortion in stainless chromium-nickel steel for an application in rail vehicle construction. Materialwiss. Werkstofftech. 2024, 55, 1005–1017.In paragraph “Acknowledgements” the following text is missing:“The presented investigations were carried out at RWTH Aachen University within the framework of the Collaborative Research Centre SFB1120-236616214 “Bauteilpräzision durch Beherrschung von Schmelze und Erstarrung in Produktionsprozessen” and funded by the Deutsche Forschungsgemeinschaft e. V. (DFG, German Research Foundation). The sponsorship and support is gratefully acknowledged. The data that support the findings of this study are available at http://hdl.handle.net/21.11102/777fe674-4446-445c-ab21-b38f5b0b37b5 upon request”We apologize for this error.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"55 9","pages":"1324"},"PeriodicalIF":1.2,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.202477164","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142165212","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