Materialwissenschaft und Werkstofftechnik最新文献_第8页

Interfacial reaction on different solder composition after laser soldering Grenzflächenreaktion auf unterschiedliche Lotzusammensetzungen nach dem Laserstrahllöten 激光焊接后不同焊料成分的界面反应激光焊接后不同焊料成分的界面反应

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-11-08 DOI: 10.1002/mawe.202200320

F. Muhamad Razizy, O. Saliza Azlina, Y. Farazila

{"title":"Interfacial reaction on different solder composition after laser soldering\u0000 Grenzflächenreaktion auf unterschiedliche Lotzusammensetzungen nach dem Laserstrahllöten","authors":"F. Muhamad Razizy, O. Saliza Azlina, Y. Farazila","doi":"10.1002/mawe.202200320","DOIUrl":"https://doi.org/10.1002/mawe.202200320","url":null,"abstract":"This study used electroless nickel-immersion gold surface finish. The lead free solder used are tin-silver-copper 305 and tin-silver-copper 307 solder alloys. The difference in copper composition will affect the intermetallic compound′s microstructure after the laser soldering process. The intermetallic compound formation analysis reveals that only (Cu, Ni)6Sn5 was observed at the solder joint interface for both solders after laser soldering. The grain microstructure of tin-silver-copper 305 formed is rounded-shaped and bar-shaped, while tin-silver-copper 307 shapes are oval-shaped and flake-like. However, for cross-sectioned analysis, the intermetallic compound grain microstructure formed at the solder joint formation was (Ni, Cu)3Sn4 and (Cu, Ni)6Sn5 presented in dendrite-like and scale-like shapes. This result shows that copper content in solder composition is directly affected the intermetallic compound grain microstructure. When exposed to the ageing process, the intermetallic compound thickness will increase directly with ageing time. The intermetallic compound thickness for tin-silver-copper 305 was increased from 0.98 μm to 8.34 μm while tin-silver-copper 307 was increased from 1.54 μm to 8.76 μm. The result also shows that nano-sized of Ag3Sn grain particle was formed on the intermetallic compound surface after an ageing process for both samples, tin-silver-copper 305 and tin-silver-copper 307.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"55 11","pages":"1484-1490"},"PeriodicalIF":1.2,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692115","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

Development of significantly hard hypereutectoid plain carbon steel through incomplete austenitization based cyclic quenching treatment Entwicklung eines signifikant harten übereutektoiden Kohlenstoff-Glattstahls durch eine zyklische Abschreckung mit unvollständiger Austenitisierung 通过基于不完全奥氏体化的循环淬火处理，开发硬度明显提高的过共析普通碳钢通过不完全奥氏体化的循环淬火处理，开发硬度明显提高的过共析普通碳钢

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-11-07 DOI: 10.1002/mawe.202400076

J. Maity, M. G. Dastidar, S. Mandal, S. Sharma, S. K. Chaudhary, A. Saha

引用次数: 0

Investigation of the influence of cryogenic-temperature machining on ultrafine-grained chips and machined surface quality of solution-treated aluminum 7075 alloys Untersuchung des Einflusses der Tieftemperaturbearbeitung auf ultrafeinkörnige Späne und die Qualität der bearbeiteten Oberfläche von lösungsgeglühten Aluminium-Legierungen (7075) 低温加工对溶液处理铝 7075 合金超细晶粒切屑和加工表面质量影响的研究低温加工对溶液处理铝 7075 合金超细晶粒切屑和加工表面质量影响的研究

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-11-07 DOI: 10.1002/mawe.202300303

H. Chen, Y. Zhang, F. Jiang, T. Chen

{"title":"Investigation of the influence of cryogenic-temperature machining on ultrafine-grained chips and machined surface quality of solution-treated aluminum 7075 alloys\u0000 Untersuchung des Einflusses der Tieftemperaturbearbeitung auf ultrafeinkörnige Späne und die Qualität der bearbeiteten Oberfläche von lösungsgeglühten Aluminium-Legierungen (7075)","authors":"H. Chen, Y. Zhang, F. Jiang, T. Chen","doi":"10.1002/mawe.202300303","DOIUrl":"https://doi.org/10.1002/mawe.202300303","url":null,"abstract":"In this study, cryogenic-temperature formal machining technique was used to process solution-treated aluminum 7075 alloys, the mechanical properties, morphology, and microstructure of machined surface and produced chips are investigated. Results show machining temperature has a huge influence on chip and machined surface morphology, cryogenic-temperature machining chips and machined surfaces possess better surface integrity, chips are continuous and smoother, and machined surfaces are flatter. In contrast, room-temperature formal machining chips exhibit serrated cracks on their free surface and the machined surface produces more serious scaly spines phenomenon. Both cryogenic-temperature and room-temperature samples experience severe deformation, cryogenic-temperature machining alumium 7075 alloys max microhardness has enhanced from 98 HV 0.1 to 174 HV 0.1, and cryogenic-temperature samples’ microhardness is higher than corresponding room-temperature samples’ microhardness among all machining parameters. Cryogenic-temperature can effectively suppress dynamic recovery thus chips could store more dislocations and then possess smaller ultrafine-grained structures, accounting for higher microhardness. Besides cryogenic-temperature inhibits precipitation of solute cluster and second phase particles and plays a lubrication effect at tool-chip interface, thus cryogenic-temperature machining aluminum 7075 alloys could obtain superior machined surface quality/chip morphology to improve processability. (*: Equal contributi)","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"55 11","pages":"1535-1548"},"PeriodicalIF":1.2,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692104","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 oak sawing parameters based on energy consumption and surface roughness Optimierung der Parameter für das Sägen von Eichenholz auf der Grundlage des Energieverbrauchs und der Oberflächenrauigkeit 基于能耗和表面粗糙度的橡木锯切参数优化基于能耗和表面粗糙度的橡木锯切参数优化

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-10-28 DOI: 10.1002/mawe.202300385

Z. Hao, F. Zhang, X. Li, Y. Wang, T. Zhang, X. Guo

{"title":"Optimization of oak sawing parameters based on energy consumption and surface roughness\u0000 Optimierung der Parameter für das Sägen von Eichenholz auf der Grundlage des Energieverbrauchs und der Oberflächenrauigkeit","authors":"Z. Hao, F. Zhang, X. Li, Y. Wang, T. Zhang, X. Guo","doi":"10.1002/mawe.202300385","DOIUrl":"https://doi.org/10.1002/mawe.202300385","url":null,"abstract":"High energy consumption and poor processing quality are common problems in wood sawing. To address these issues, in this article, specific cutting energy and surface roughness were investigated with saw blade speed as control variables. Analysing the effect of parameters on specific cutting energy and surface roughness. The sawing parameters were optimised with the objectives of minimum specific cutting energy and minimum surface roughness. The findings indicate that specific cutting energy and surface roughness reduction with increasing rake angle; specific cutting energy and surface roughness decrease with increasing spindle speed; specific cutting energy decreases and surface roughness increases with increasing feed rate. ANOVA analysis reveals that sawing speed (n) has the most significant impact on specific cutting energy during oak cutting. The optimal solution derived from TOPSIS suggests a specific cutting energy of 2E7 J/m3 and a surface roughness of 1.758 μm. The innovation of this paper is the study of the specific cutting energy and the optimisation of parameters. These findings provide valuable theoretical and practical guidance for enhancing the efficiency and quality of oak processing while minimizing energy consumption.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"55 10","pages":"1346-1356"},"PeriodicalIF":1.2,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540968","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

Materialwiss. Werkstofftech. 10/2024 材料科学材料工程 10/2024

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-10-28 DOI: 10.1002/mawe.202481011

引用次数: 0

Cover Picture: (Materialwiss. Werkstofftech. 10/2024) 封面图片： (Materialwiss. Werkstofftech. 10/2024)

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-10-28 DOI: 10.1002/mawe.202481001

引用次数: 0

Impressum: Materialwiss. Werkstofftech. 10/2024 版本说明：Materialwiss.材料技术 10/2024

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-10-28 DOI: 10.1002/mawe.202481021

引用次数: 0

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