Materialwissenschaft und Werkstofftechnik最新文献

Influence of lithium oxalate doping on the calcination strength of rutile titanium dioxide 草酸锂掺杂对金红石型二氧化钛煅烧强度的影响

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-29 DOI: 10.1002/mawe.202400089

J. X. Zou, T. T. Liao, Y. Q. Ren, D. Guo, Q. L. Zou

{"title":"Influence of lithium oxalate doping on the calcination strength of rutile titanium dioxide","authors":"J. X. Zou, T. T. Liao, Y. Q. Ren, D. Guo, Q. L. Zou","doi":"10.1002/mawe.202400089","DOIUrl":"https://doi.org/10.1002/mawe.202400089","url":null,"abstract":"Rutile titanium dioxide has stronger density and weather resistance than anatase titanium dioxide, the overall performance is better, but the required calcination intensity is also higher. In order to reduce calcination temperature and calcination time, lithium oxalate doped metatitanic acid was used to prepare rutile titanium dioxide. Adding 0 %, 0.15 %, 0.3 %, 0.45 %, 0.6 %, 0.75 %, 0.9 % and 1.05 % lithium oxalate (calculated as lithia) to metatitanic acid (calculated as titanium dioxide) containing 0.10 % phosphorus pentoxide, 0.20 % potassium oxide and 0.2 % calcined crystal seed respectively, calcined at 800 °C, 850 °C, 875 °C and 900 °C respectively. The results show that when the doping amount of lithia is 0.3 %, the maximum temperature is 800 °C, and the calcination time is 9 h, the rutile crystal style content in titanium dioxide products can reach 99.6 %, the grain size and particle morphology meet the performance requirements of titanium dioxide (R), and the calcination strength is significantly lower than that of industrial production above 1000 °C and 10 h to 12 h calcination time. Remarkable results have been achieved in energy saving and product quality. In addition, the hypothesis that the A−R phase transition is caused by the increase of mixing entropy of titanium dioxide system is used to explain the phenomenon that lithium ions effectively promote the phase transition of rutile.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 4","pages":"495-502"},"PeriodicalIF":1.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888813","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. 4/2025) 封面图片：(Materialwiss。Werkstofftech . 4/2025)

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-29 DOI: 10.1002/mawe.202580401

引用次数: 0

Impressum: Materialwiss. Werkstofftech. 4/2025 刊头:Materialwiss .Werkstofftech . 4/2025

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-29 DOI: 10.1002/mawe.202580421

引用次数: 0

Materialwiss. Werkstofftech. 4/2025 Materialwiss .Werkstofftech . 4/2025

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-29 DOI: 10.1002/mawe.202580411

引用次数: 0

Influence of shear cutting parameters on the edge properties and the fatigue behavior of non-oriented electrical steel sheets 剪切参数对无取向电工钢板边缘性能和疲劳性能的影响

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-28 DOI: 10.1002/mawe.202400094

A. Gottwalt-Baruth, P. Kubaschinski, M. Waltz, U. Tetzlaff

{"title":"Influence of shear cutting parameters on the edge properties and the fatigue behavior of non-oriented electrical steel sheets","authors":"A. Gottwalt-Baruth, P. Kubaschinski, M. Waltz, U. Tetzlaff","doi":"10.1002/mawe.202400094","DOIUrl":"https://doi.org/10.1002/mawe.202400094","url":null,"abstract":"The fatigue behavior of a fully processed, non-oriented electrical steel sheet is investigated for different shear cutting parameters. Therefore, three cutting clearances (15 μm, 35 μm and 50 μm) in combination with two different punching tool wear states (sharp and worn) are compared regarding their mechanical properties. For this purpose, surface measurements, nanoindentation tests and stress-controlled fatigue tests with a positive load ratio are performed for all six parameter sets. During shear cutting the material gets locally strain-hardened and a deformed surface with micro-notches is created. Compared to a polished reference condition, the fatigue strength of the shear-cut sheets is severely deteriorated. However, the intensity of deterioration varies depending on the shear cutting parameters. For small cutting clearances, the highest fatigue life is observed for a sharp cutting tool. In contrast, for medium and high cutting clearances, samples that are cut with a worn tool achieve higher fatigue lives. Surface characteristics in the fracture zone, which act as a failure-critical crack location, are considered as the main influencing factor.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 4","pages":"537-548"},"PeriodicalIF":1.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.202400094","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888810","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

Understanding the galvanic corrosion of B30 copper-nickel alloy and AISI 304 stainless steel with the effect of fluoride ions and protons using the wire beam electrode 利用线束电极研究了氟离子和质子对B30铜镍合金和AISI 304不锈钢的电偶腐蚀

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-28 DOI: 10.1002/mawe.202400116

X.-M. Wang, Q.-D. Zhong, J. Yang, S.-J. Zhang

引用次数: 0

Ameliorating mechanical properties of treated mixed recycled aggregate concrete using a central composite design 采用中心复合设计改善处理过的混合再生骨料混凝土的力学性能

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-22 DOI: 10.1002/mawe.202400202

A. Basnett, A. Sekar, Nachiar S

{"title":"Ameliorating mechanical properties of treated mixed recycled aggregate concrete using a central composite design","authors":"A. Basnett, A. Sekar, Nachiar S","doi":"10.1002/mawe.202400202","DOIUrl":"https://doi.org/10.1002/mawe.202400202","url":null,"abstract":"The rapid expansion of global infrastructure growth has caused a substantial rise in construction and demolition waste. This study introduces an innovative approach for investigating mixed recycled aggregate in concrete generated from construction and demolition waste by treating it with cement and nano-silica slurry wrapping techniques. A central composite design experimental methodology was used to optimise the slurry for treatment, considering cement content, nano-silica content, and water-to-aggregate ratio as independent variables. At the same time, water absorption and Los Angeles abrasion with visual inspection were response-targeted values. Multi-objective response optimisation and desirability analysis determined optimal levels. Scanning electron microscopy, x-ray diffraction, and x-ray fluorescence were used to analyse mixed recycled aggregate facade changes after treatment. In addition, concrete with untreated and optimised treated mixed recycled aggregate at 0 %, 25 %, 50 %, 75 %, and 100 % as a replacement for natural aggregate was tested for workability and mechanical properties. The findings showed that 50 % replacement improved concrete characteristics at the optimal percentage due to the coating process-filled fracture holes and densified mixed recycled material, improving concrete matrix bonding.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 4","pages":"517-536"},"PeriodicalIF":1.2,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143889129","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

A review on advances on flux cored arc welding of pipes and petrochemical pipelines 管道及石油化工管道药芯电弧焊研究进展综述

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-22 DOI: 10.1002/mawe.202400189

V. O. Odhiambo, J. M. Kihiu, B. R. Mose, J. G. Odhiambo

{"title":"A review on advances on flux cored arc welding of pipes and petrochemical pipelines","authors":"V. O. Odhiambo, J. M. Kihiu, B. R. Mose, J. G. Odhiambo","doi":"10.1002/mawe.202400189","DOIUrl":"https://doi.org/10.1002/mawe.202400189","url":null,"abstract":"Flux cored arc welding has emerged as a vital welding technology in the realm of pipes and petrochemical pipelines, addressing the severe weld quality, material compatibility, and safety criteria in these essential applications. The paper begins with a brief description of the flux cored arc welding process, explaining its procedural complexities, the necessary tools used, and the variety of consumables used. The review then describes the complexities of flux cored arc welding's applicability in joining pipes due to the unique welding demands imposed by petrochemical pipelines. A thorough examination of flux cored arc welding characteristics and processes follows, identifying the critical welding parameters that have a significant impact on the structural strength and durability of flux cored arc welded joints. The review goes further to highlight key applications of flux cored arc welding through case studies by illustrating the adaptability of the welding procedure to different scenarios. An in-depth analysis of flux cored arc welding technological advancements that highlights the current developments in electrode composition, shielding gases, and automation is also considered. In conclusion, this study offers a thorough overview of flux cored arc welding uses in pipes and petrochemical pipelines, fusing technical clarification with real-world applications.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 4","pages":"549-564"},"PeriodicalIF":1.2,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143889131","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

Permeability, solubility and diffusivity of hydrogen in alloy 718 氢在718合金中的渗透率、溶解度和扩散率

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-22 DOI: 10.1002/mawe.202400192

F. Ebling, T. Michler

引用次数: 0

Investigation of hot ductility behavior of micro-alloyed steel and the effect of strain rate and dynamic phase transformation on the 2nd ductility minimum 微合金钢热塑性行为研究及应变速率和动态相变对第2次塑性最小值的影响

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-22 DOI: 10.1002/mawe.202400249

S. Bakhtiari, S. S. Sharifi, S. Ilie, C. Sommitsch

{"title":"Investigation of hot ductility behavior of micro-alloyed steel and the effect of strain rate and dynamic phase transformation on the 2nd ductility minimum","authors":"S. Bakhtiari, S. S. Sharifi, S. Ilie, C. Sommitsch","doi":"10.1002/mawe.202400249","DOIUrl":"https://doi.org/10.1002/mawe.202400249","url":null,"abstract":"Continuous casting of steel is widely used to manufacture semi-finished long or flat products. Various stresses are present during slab casting: stresses arise from friction between the mold wall and the solidified shell, thermal stresses on the strand surface, and stresses from bending and straightening operations. Steels present a minimum ductility point during continuous casting in the solid-state condition. This work aims to answer the metallurgical reasons for the occurrence of the ductility minimum in a micro-alloyed steel by investigating the microstructural evolution. The samples are in situ melted via induction heating in the BETA250-5® thermomechanical simulator machine, followed by hot tensile tests conducted at different temperatures and strain rates. The ductility drop is analyzed in the range of 650 °C–1100 °C at different strain rates, 10−2 s−1 to 10−3 s−1. Furthermore, the study investigated the development of the ferrite phase at the prior austenite grain boundaries, the thickness of ferrite, dynamic phase transformation, and the influence of the test conditions on these parameters. The fracture mechanism and ferrite phase thickness are determined from metallography investigations using light optical microscopy and scanning electron microscopy. Finally, the microstructural changes are correlated to the ductility minimum using the measured results.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 4","pages":"601-611"},"PeriodicalIF":1.2,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.202400249","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143889130","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