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Materials Research-ibero-american Journal of Materials最新文献

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Thermal and Acoustic Performance of Green Polyethylene/Cork Composite for Civil Construction Applications 民用建筑用绿色聚乙烯/软木复合材料的热声性能
IF 1.7 4区 材料科学
Materials Research-ibero-american Journal of Materials Pub Date : 2023-02-06 DOI: 10.1590/1980-5373-mr-2022-0232
G.S.C. Vasconcelos, L. H. Carvalho, F. Araujo, F. A. Pinto, R. Barbosa, Mateus B F Santos, T. S. Alves
{"title":"Thermal and Acoustic Performance of Green Polyethylene/Cork Composite for Civil Construction Applications","authors":"G.S.C. Vasconcelos, L. H. Carvalho, F. Araujo, F. A. Pinto, R. Barbosa, Mateus B F Santos, T. S. Alves","doi":"10.1590/1980-5373-mr-2022-0232","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0232","url":null,"abstract":"In this study, green high-density polyethylene (GHDPE) composites with 5, 10 and 15% natural powdered cork (CP) with and without 5% maleic anhydride (PE-g-MA) were developed in order to evaluate the potential of these materials for civil construction applications. The composites were produced in a co-rotating twin-screw extruder and injection molded. An impedance tube was used to determine the acoustic behavior of the composites, which were then used as ceiling tiles in prototypes of provisional constructions in order to study ascertain their performance with respect to thermal comfort in the City of Teresina, PI - Brazil. Our data indicates that composites sound absorption coefficient values are good between 500 and 1200 Hz, especially for those with a higher percentage of cork, with the lowest absorption rate observed for composites containing PE-g-MA. The composites used in the prototypes provided a decrease in the internal temperature of the built structure.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67301527","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
Microstructure and Properties of Laser Cladding AlxFeCoCrNiMn High Entropy Alloy of Q345 Steel Q345钢激光熔覆alxfeccrnimn高熵合金的组织与性能
IF 1.7 4区 材料科学
Materials Research-ibero-american Journal of Materials Pub Date : 2023-02-06 DOI: 10.1590/1980-5373-mr-2022-0154
Dongfang Yan, Chuanwei Shi, Jianyang Wang, Yuan-bin Zhang, Junhua Sun, Yong-bin Wang, Peng Liu
{"title":"Microstructure and Properties of Laser Cladding AlxFeCoCrNiMn High Entropy Alloy of Q345 Steel","authors":"Dongfang Yan, Chuanwei Shi, Jianyang Wang, Yuan-bin Zhang, Junhua Sun, Yong-bin Wang, Peng Liu","doi":"10.1590/1980-5373-mr-2022-0154","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0154","url":null,"abstract":"High entropy alloy is a multi-component alloy material with equal or near atomic number, which has excellent wear resistance and corrosion resistance. In this paper, AlxFeCoCrNiMn (x = 0,0.5,1.0,1.5) high entropy alloy cladding layer was prepared by laser cladding on Q345 steel plate. The phase structure, microstructure, hardness and wear resistance of the cladding layer were studied. The results show that the cladding layer of AlxFeCoCrNiMn alloy has good metallurgical bonding ability with Q345 steel. The cladding area is mainly columnar and equiaxed. The cladding layer of AlxFeCoCrNiMn alloy is mainly composed of BCC + FCC solid solution phase, which is caused by the addition of Al element under the high entropy effect. Al element promotes the formation of BCC phase structure. With the increase of Al element, the hardness of cladding layer increases. The hardness of A 1.0 cladding layer is 670HV, which is close to three times of Q345 steel. When Al (x = 1.0), the hardness of the cladding layer is the highest, and it also shows better wear resistance with lower friction and wear loss.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67301432","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: 1
The Bauschinger Effect Magnitude Control in Ultra-Low Carbon Steel Wires 超低碳钢丝的包辛格效应幅度控制
IF 1.7 4区 材料科学
Materials Research-ibero-american Journal of Materials Pub Date : 2023-02-06 DOI: 10.1590/1980-5373-mr-2022-0409
F. David, Rafael de Oliveira Cordeiro, Luan Marcel Costa Vasconcelos, Ben Dêivide de Oliveira Batista, F. Liberato, A. R. Costa
{"title":"The Bauschinger Effect Magnitude Control in Ultra-Low Carbon Steel Wires","authors":"F. David, Rafael de Oliveira Cordeiro, Luan Marcel Costa Vasconcelos, Ben Dêivide de Oliveira Batista, F. Liberato, A. R. Costa","doi":"10.1590/1980-5373-mr-2022-0409","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0409","url":null,"abstract":"The cold roller die process increases the tensile strength and decreases the ductility of steel wire. Annealing heat treatment is applied to restore mechanical properties, but this is a costly process. This research shows that it is possible to control the mechanical properties of ultra-low carbon steel wire inducing the Bauschinger effect and relieving residual steel stresses. The present study uses several pulleys to promote and control the Bauschinger effect magnitude through alternated cyclic bending. A Completely Randomized Design, a regression study, and the Akaike Information Criterion were used to understand the relationship between the quantity and diameter of pulleys and the influence on the magnitude of the Bauschinger effect. Statistical models showed that it is possible to have a maximum increase of 103% in uniform elongation and a maximum decrease of 14% in yield strength. An interaction between the factors studied in controlling the Bauschinger effect magnitude was confirmed.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67302894","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
Directional Solidification of Aluminum A360 under Moderate DC Magnetic Field and Electric Current 中等直流磁场和电流作用下铝A360定向凝固研究
IF 1.7 4区 材料科学
Materials Research-ibero-american Journal of Materials Pub Date : 2023-02-03 DOI: 10.1590/1980-5373-mr-2022-0330
I. Kaldre, A. Bojarevičs, M. Milgrāvis, T. Beinerts, M. Kalvāns
{"title":"Directional Solidification of Aluminum A360 under Moderate DC Magnetic Field and Electric Current","authors":"I. Kaldre, A. Bojarevičs, M. Milgrāvis, T. Beinerts, M. Kalvāns","doi":"10.1590/1980-5373-mr-2022-0330","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0330","url":null,"abstract":"Metal additive manufacturing is rapidly developing technology, but its application in wider scale is limited by several factors. One of these is expensive raw material, because it requires certain physical properties. Two most popular metal additive manufacturing methods are printing from powder and printing from wire. Wire is usually produced by drawing it from rod. Rod can be produced by directional solidification, which is well known method to study the microstructure formation depending on various parameters during solidification. In this study directional solidification of A360 aluminum alloy with electromagnetic interaction is investigated. Aluminum alloy is induction melted and then directionally solidified into the rod 12-20 mm in diameter. Aim of this work is to investigate the role of axial DC magnetic field and electric current interaction on the grain refinement and mechanical properties of A360 aluminum alloy. It is found that electromagnetic interaction can be the approach to refine the grains, regulate the growth of oriented columnar grains and to improve mechanical properties of the material.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67302113","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 Milling and Use of Ni and Al Containing Metal Binder in NbC-Based Cermets 含镍铝金属粘结剂对铌基陶瓷铣削及使用的影响
IF 1.7 4区 材料科学
Materials Research-ibero-american Journal of Materials Pub Date : 2023-02-03 DOI: 10.1590/1980-5373-mr-2022-0003
Evandro Dematte, E. Franco, J. Milan, C. E. Costa
{"title":"Influence of Milling and Use of Ni and Al Containing Metal Binder in NbC-Based Cermets","authors":"Evandro Dematte, E. Franco, J. Milan, C. E. Costa","doi":"10.1590/1980-5373-mr-2022-0003","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0003","url":null,"abstract":"This study presents the development of niobium carbide cermets bound to nickel and Ni-12Al (wt%). The use of Ni-12Al (wt%) and Ni aims to replace strategic elements such as cobalt (Co) utilized in tungsten carbide-based cermets. Cermets of different compositions were processed by conventional powder metallurgy. Microstructural analysis with semi-quantitative chemical analysis by EDX, Vickers microhardness and density measurement were performed to evaluate the influence of high energy milling application and sintering temperature on the properties of these cermets. A milling time of 20 min in a planetary mill and sintering temperatures of 1420 ºC or 1450 ºC resulted in homogeneous microstructures, densities close to 90% and hardness of around 1000 HV 1 , showing a potential for use of this material in cutting tools.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67300572","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
The Influence of Pd on the Structure and Oxidation Performance of β-NiAl Diffusion Coatings Pd对β-NiAl扩散涂层结构和氧化性能的影响
IF 1.7 4区 材料科学
Materials Research-ibero-american Journal of Materials Pub Date : 2023-01-23 DOI: 10.1590/1980-5373-mr-2022-0384
E. Pauletti, A.S.C.M d’ Oliveira
{"title":"The Influence of Pd on the Structure and Oxidation Performance of β-NiAl Diffusion Coatings","authors":"E. Pauletti, A.S.C.M d’ Oliveira","doi":"10.1590/1980-5373-mr-2022-0384","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0384","url":null,"abstract":"Aluminized coatings on Ni based alloys greatly contribute to achieve process efficiency at higher operating temperatures. The present study characterized Pd-modified and unmodified aluminized coatings and compared with those of Pt-modified coatings regarding the mechanisms of formation and oxidation performance. The results show that Pd reduces the driving force for diffusion of Al during coating formation, increases outward diffusion of Ni and reduces diffusion of alloying elements (Cr and Ti) into the intermetallic layer. In contrast, Pt increases the driving force for diffusion of Al and the mobility of Al in the intermetallic layer of the aluminized coating. These characteristics have a direct impact on oxidation at 1000 °C that showed that Pd reduced the rate of θ-Al 2 O 3 → α-Al 2 O 3 transformation, accounting for higher density of voids at the interface β(NiAl)/θ-Al 2 O 3, diffusion of oxygen into the coating, spalling and faster degradation of coatings.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67302681","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
Biodegradation in Soil of Commercial Plastic Bags Labelled as “Biodegradable” 标记为“可生物降解”的商业塑料袋在土壤中的生物降解
IF 1.7 4区 材料科学
Materials Research-ibero-american Journal of Materials Pub Date : 2023-01-09 DOI: 10.1590/1980-5373-mr-2022-0164
E. Mastalygina, Z. Abushakhmanova, M. Poletto, P. Pantyukhov
{"title":"Biodegradation in Soil of Commercial Plastic Bags Labelled as “Biodegradable”","authors":"E. Mastalygina, Z. Abushakhmanova, M. Poletto, P. Pantyukhov","doi":"10.1590/1980-5373-mr-2022-0164","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0164","url":null,"abstract":",","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67301414","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: 2
Effect of the Fibers Orientation of the Different Types of Composite Plates Notched of U-Shape Repaired by Composite Patch 不同类型u型缺口复合材料补片修复板纤维取向的影响
IF 1.7 4区 材料科学
Materials Research-ibero-american Journal of Materials Pub Date : 2023-01-09 DOI: 10.1590/1980-5373-mr-2022-0302
Berrahou Mohamed, Amari Khaoula, Belkaddour Leila
{"title":"Effect of the Fibers Orientation of the Different Types of Composite Plates Notched of U-Shape Repaired by Composite Patch","authors":"Berrahou Mohamed, Amari Khaoula, Belkaddour Leila","doi":"10.1590/1980-5373-mr-2022-0302","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0302","url":null,"abstract":"The main objective of this work is to repair a structure of composite materials by gluing composite patches with different fiber directions. The effects of stress distribution, damaged area ratio, stress intensity factor KIC and imposed stacking sequence were highlighted by a comprehensive study that contained two sides, an applied experimental side and a numerical model side. The composite materials plates studied in this work are 8-layer of graphite/epoxy, glass/epoxy and boron/epoxy, with different angles. The results obtained clearly show with respect to the experimental side that the orientation of the fibers affects the ultimate strength of failure and that the fibers oriented longitudinally in the direction of the tensile strength give us an ideal performance of the composite material. As for the model aspect of this study, the effects of stress intensity factor and the relationship between the damaged area and the fiber orientation on the performance of these patches were studied. We can conclude from this study that the orientation of the fibers has an important role in the performance of the composite material and its efficiency in repair.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67302263","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: 1
Evaluation of Biochar Production Temperature in Interaction with Elastomers of Different Polarities 不同极性弹性体相互作用下生物炭生产温度的评价
IF 1.7 4区 材料科学
Materials Research-ibero-american Journal of Materials Pub Date : 2023-01-06 DOI: 10.1590/1980-5373-mr-2022-0341
W. B. Ribeiro, Giovani B. Bérti, Maíra Faccio, M. Godinho, R. N. Brandalise
{"title":"Evaluation of Biochar Production Temperature in Interaction with Elastomers of Different Polarities","authors":"W. B. Ribeiro, Giovani B. Bérti, Maíra Faccio, M. Godinho, R. N. Brandalise","doi":"10.1590/1980-5373-mr-2022-0341","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0341","url":null,"abstract":"The present work is to study the production and characterization of biochar produced at two different temperatures (400 and 900 °C) and its influence on the interaction of biochar with elastomers of different polarity, aiming at the replacement of carbon black in elastomer compounds, based on the rheometric, physical, chemical and mechanical properties. The biochar production temperature of 900 ºC affected the optimum vulcanization time (t 90 ), with compounds containing NR and NBR having the shortest vulcanization times because temperatures above 400 ºC produce an alkaline biochar that accelerates vulcanization. The biochar interacted with the two elastomers, being superior to NBR due to the oxygen concentration. Therefore, the blends with biochar showed a demonstrated reinforcement of the tensile strength, even if the biochar had a surface area of 3 m 2 .g -1 for the observed irregular surface, in addition to the mechanical properties, analogous to the blends with carbon black.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67302294","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: 2
Ti-containing High-Entropy Alloys for Aeroengine Turbine Applications 航空发动机涡轮用含钛高熵合金
IF 1.7 4区 材料科学
Materials Research-ibero-american Journal of Materials Pub Date : 2023-01-06 DOI: 10.1590/1980-5373-mr-2022-0213
R. Canumalla, T. V. Jayaraman
{"title":"Ti-containing High-Entropy Alloys for Aeroengine Turbine Applications","authors":"R. Canumalla, T. V. Jayaraman","doi":"10.1590/1980-5373-mr-2022-0213","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0213","url":null,"abstract":"Sustained research in high-entropy alloys (HEAs) has presented opportunities for relatively lighter alloys, specifically the Ti-containing HEAs, having an excellent combination of properties, and a great potential to replace heavier superalloys. We adopted a novel data-driven methodology to sort and select Ti-containing HEAs from the literature for their potential applications in aeroengine turbines by applying multiple-attribute decision-making (MADM). The ranks of the alloys evaluated by diverse MADMs were consistent. The data-driven methodology identified the following top five Ti-containing HEAs: ONS-BCC-Ti17.8 (Al 20.4 -Mo 10.5 -Nb 22.4 -Ta 10.1 -Ti 17.8 -Zr 18.8 ), EF-BCC-Cr20-Ti20 (Ti 20 -Zr 20 -Hf 20 - Nb 20 -Cr 20 ), ONS-BCC-Ti27.9 (Al 11.3 -Nb 22.3 -Ta 13.1 -Ti 27.9 -V 4.5 -Zr 20.9 ), ONS-BCC-Ti27.7 (Al 5.2 -Nb 23.4 - Ta 13.2 -Ti 27.7 -V 4.3 -Zr 26.2 ), and ONS-BCC-Ti20 (Nb 20 -Cr 20 -Mo 10 -Ta 10 -Ti 20 -Zr 20 ); the methodology provides directives for further development of the identified Ti-containing HEAs for potential replacement of legacy superalloys in aeroengine turbines. The top-ranked alloy (Al 20.4 -Mo 10.5 -Nb 22.4 -Ta 10.1 -Ti 17.8 -Zr 18.8 ) is lighter than the current industry benchmark, Inconel 718, by ~13%. All the top five Ti-containing HEAs have configurational entropy greater than ~13.3 J/mol K and body-center cubic crystal structure. The potency of the methodology could further be tapped by choosing appropriate weights of the properties for specific aeroengine turbine applications.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67301830","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: 2
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