Journal of Metallic Material Research最新文献_第2页

As-Cast Microstructures of High Entropy Alloys Designed to Be TaC-Strengthened 高温强化高熵合金铸态组织的研究

Journal of Metallic Material Research Pub Date : 2022-06-06 DOI: 10.30564/jmmr.v5i2.4685

P. Berthod

引用次数: 4

Interpretation of Water Samples by Correspondence Analysis for Radioactive Elements in the Northern Coast of Oman Sea 阿曼海北部海岸水样放射性元素对应分析解释

Journal of Metallic Material Research Pub Date : 2022-05-05 DOI: 10.30564/jmmr.v5i1.4571

Farshad Darab-Golestan, M. R. Zare

引用次数: 0

Determination of Hydrodynamic Parameters of Chitosan Stabilized Bimetallic Nanoparticles 壳聚糖稳定双金属纳米颗粒水动力参数的测定

Journal of Metallic Material Research Pub Date : 2022-04-29 DOI: 10.30564/jmmr.v5i1.4566

Vokhidova N. R., Rashidova S. Sh.

引用次数: 0

Influence of Nanoparticle Shapes of Boehmite Alumina on the Thermal Performance of a Straight Microchannel Printed Circuit Heat Exchanger 薄铝纳米颗粒形状对直微通道印刷电路换热器热性能的影响

Journal of Metallic Material Research Pub Date : 2022-02-17 DOI: 10.30564/jmmr.v5i1.4364

E. Nogueira

{"title":"Influence of Nanoparticle Shapes of Boehmite Alumina on the Thermal Performance of a Straight Microchannel Printed Circuit Heat Exchanger","authors":"E. Nogueira","doi":"10.30564/jmmr.v5i1.4364","DOIUrl":"https://doi.org/10.30564/jmmr.v5i1.4364","url":null,"abstract":"The efficiency and irreversibility defined based on the second law ofthermodynamics provide a new path for heat exchangers design and makeperformance analysis more straightforward and elegant. The second lawof thermodynamics is applied in a Straight Microchannel Printed Circuitheat exchanger to determine the thermal performance of different shapes ofBoehmite Alumina compared to Al2O3 aluminum oxide. The various formsof non-spherical Boehmite Alumina are characterized dynamically andthermodynamically through dynamic viscosity and thermal conductivity,using empirical coefficients. The non-spherical shape includes platelet,cylindrical, blades, and bricks forms. Graphical results are presented forthermal efficiency, thermal irreversibility, heat transfer rate, and nanofluidexit temperature. The non-spherical shapes of Boehmite Alumina showdifferent thermal characteristics concerning the spherical shape whenthere are variations in fluid flow rates and the nanoparticles fraction.Furthermore, it was theoretically demonstrated that non-spherical particleshave higher heat transfer rates than spherical particles, emphasizingplatelets and cylindrical shapes for the low volume fraction of nanoparticlesand bricks and blades for high volume fraction.","PeriodicalId":232294,"journal":{"name":"Journal of Metallic Material Research","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121395815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Influence of Friction Time on the Joint Interface and Mechanical Properties in Dissimilar Friction Welds 摩擦时间对不同摩擦焊接头界面及力学性能的影响

Journal of Metallic Material Research Pub Date : 2022-02-11 DOI: 10.30564/jmmr.v5i1.4209

Venkata Charan Kantumuchu, Muralimohan Cheepu

{"title":"The Influence of Friction Time on the Joint Interface and Mechanical Properties in Dissimilar Friction Welds","authors":"Venkata Charan Kantumuchu, Muralimohan Cheepu","doi":"10.30564/jmmr.v5i1.4209","DOIUrl":"https://doi.org/10.30564/jmmr.v5i1.4209","url":null,"abstract":"The welding of dissimilar materials is one of the challenging issues in thefabrication industry to obtain required quality welds using fusion weldingmethods. However, some processes recently improved interface bondingwith low joint strength. Unfortunately, the major intermetallic compoundscould not alleviate from the joint interface. Alternatively, solid-statewelding methods revealed fewer intermetallics at the joint interface fordissimilar material welds. Among them, friction welding was chosen to joinincompatible materials with the necessary properties successfully. Frictiontime is a critical parameter for obtaining strong welds through frictionwelding, apart from friction pressure, forging pressure, forging time, androtational speed. Variability of friction time can change the strength offriction by changing mechanical properties such as tensile strength. Thischange of tensile strength is typically influenced by the intermixing region,dependent on friction time. In this experiment, carbon steel and stainlesssteel have been friction welded to test the impact of friction time on thejoint interface where the substrate’s faying surface meets. This interfaceconsists of the intermixing region of the two materials on which the frictionwelding is performed. The results showed an interesting variation in tensilestrength, with varying friction time. The width of the intermixing zoneincreased gradually with friction time until and decreased with the furtherincreasing. The strength of the welds obtained was the highest of 730 MPaat a friction time of 4 s and fell as friction time’s increased value after 4 s.","PeriodicalId":232294,"journal":{"name":"Journal of Metallic Material Research","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123915231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Developing Magnetic Material for Remediation of Aquatic Nitrogen Pollution in Water Facilities 磁性材料修复水体氮污染的研究

Journal of Metallic Material Research Pub Date : 2021-12-24 DOI: 10.30564/jmmr.v4i2.4231

G. Zhu, Junming Chen

{"title":"Developing Magnetic Material for Remediation of Aquatic Nitrogen Pollution in Water Facilities","authors":"G. Zhu, Junming Chen","doi":"10.30564/jmmr.v4i2.4231","DOIUrl":"https://doi.org/10.30564/jmmr.v4i2.4231","url":null,"abstract":"Natural organic matter affect water environmental security and posed a potential threat to human health, and thus it has long been considered as a key index to evaluate water treatment performance. Dissolved organic nitrogen is one of the NOM, which produces some disinfection byproducts having more toxic than those carbon-based materials. Coagulation is a key unit of drinking water purification and has received wide attention. However, conventional flocculation technology on removal of DON is so poor that we have to seek more effective improving measurement. The combined use of conventional flocculant and organic polymer can improve treatment efficiency to a certain extent, and enhanced coagulation can also improve the DON removal rate, but their DON removal performance is still not dreamful. At present, there is a lack of systematic research on flocculation to remove DON. Although some achievements have been made, there is still a big gap between the preparation technology of flocculant and the goal of efficient removal of DON in water.For treatment of secondary effluent of industrial wastewater, some studies show that the use of Fe3O4 mainly has the effect of accelerating separation, but the adsorption effect is not good. However, with the synergistic flocculation of amino functionalized Fe3O4 it has a good effect on removing water protein, polysaccharide and humic acid, which can meet the water quality discharge standard and reduce the dosage of flocculant. The above results show that functional nanoparticle materials are of great significance to improve the adsorption and flocculation performance. Therefore, the functional modification of magnetic nanoparticles plays an important role.","PeriodicalId":232294,"journal":{"name":"Journal of Metallic Material Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130159454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation and Mathematical Modelling of Optimized Cutting Parameters for Surface Roughness of EN-8 Alloy Steel EN-8合金钢表面粗糙度优化切削参数的研究与数学建模

Journal of Metallic Material Research Pub Date : 2021-12-20 DOI: 10.30564/jmmr.v4i2.4094

A. Saraswat, Dipak Kumar

引用次数: 0

Surface Tension of GaInSnBiZn Liquid High-entropy Alloy GaInSnBiZn液体高熵合金的表面张力

Journal of Metallic Material Research Pub Date : 2021-12-15 DOI: 10.30564/jmmr.v4i2.4091

S. Zhu, Lu Liu, Q. Lin

{"title":"Surface Tension of GaInSnBiZn Liquid High-entropy Alloy","authors":"S. Zhu, Lu Liu, Q. Lin","doi":"10.30564/jmmr.v4i2.4091","DOIUrl":"https://doi.org/10.30564/jmmr.v4i2.4091","url":null,"abstract":"As an emerging alloy material, high-entropy alloy has potential applications that distinguish it from traditional alloys due to its special physicochemical properties. In this work, a low melting point GaInSnBiZn high-entropy alloy was designed based on Miedema model, and its surface tension was measured by the continuous pendant-drop method. The results show that the intrinsic surface tension of GaInSnBiZn high-entropy alloy at 80 °C is 545±5 mN/m, and the surface tension of the liquid alloy is significantly reduced by the formation of surface oxide film. The surface tension of GaInSnBiZn high-entropy alloy was analyzed by using theoretical models (Guggenheim model, GSM (general solution) model and Butler model), and the thermodynamic characteristics of the surface tension formation were further verified by combining with thermodynamic calculations, among which the calculated results of Butler model were in good agreement with the experimental data. Meanwhile, it is found that the surface concentration of Bi in the alloy is much larger than the nominal concentration of its bulk phase, which contributes the most to the surface tension of the alloy, however, it contributes the least to the entropy of the alloy formation in combination with the Butler model.","PeriodicalId":232294,"journal":{"name":"Journal of Metallic Material Research","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115249846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wetting of Laser Textured Cu Surface by Ethylene Glycol and Sn 乙二醇和锡对激光织构铜表面的润湿作用

Journal of Metallic Material Research Pub Date : 2021-07-28 DOI: 10.30564/JMMR.V4I1.3427

Q. Lin, Kaibin Xie, Yu jie Ge

引用次数: 2

Identification of an Appropriate Formulation for Domestic Water Ceramic Filters from Soukamna Clay (Cameroon) 喀麦隆苏卡姆纳粘土生活用陶瓷滤水器配方的优选

Journal of Metallic Material Research Pub Date : 2021-07-28 DOI: 10.30564/JMMR.V4I1.3462

Nguiamba Ngiongboung, Celestine Asobo Yanu, P. D. B. Bélibi, J. Sieliechi, M. Ngassoum

{"title":"Identification of an Appropriate Formulation for Domestic Water Ceramic Filters from Soukamna Clay (Cameroon)","authors":"Nguiamba Ngiongboung, Celestine Asobo Yanu, P. D. B. Bélibi, J. Sieliechi, M. Ngassoum","doi":"10.30564/JMMR.V4I1.3462","DOIUrl":"https://doi.org/10.30564/JMMR.V4I1.3462","url":null,"abstract":"This paper deals with the formulation of ceramic filters having the porosity adapted to domestic potable water treatment. The filters were made from clays and rice husk obtained from the Far North region of Cameroon (Logone Valley). Nine formulations were investigated to choose those that might have the porosity standing between 35 and 50% (the ideal porosity adapted for water treatment) [1]. The nine formulations investigated were as follow: clay:rice husk mixture weight ratio 0.7:0.3; 0.8:0.2 and 0.9:0.1 with the particle size of 100:100 microns. The sintering temperatures of 900°C, 950°C and 1000°C were applied for each of the mixtures. The results showed that only filters with weight ratio 0.7:0.3 sintered at 900°C, 950°C and 1000°C had porosity between 35 and 50% with values of 39.41±0.96; 40.15±1.59; 40.14±1.31 respectively. Mechanical strength, permeability and iron leaching behavior were investigated for these three formulations. The formulation 0.7:0.3 with sintering temperature of 1000°C had the higher permeability and was the more stable for iron leaching so it is the more adapted for water treatment in terms of flow rate and iron leaching behavior, pore size distribution showed that these filters were macroporous and designed for microfiltration with average pore diameter of 0.46µm.","PeriodicalId":232294,"journal":{"name":"Journal of Metallic Material Research","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131926995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1