Acta Metallurgica Slovaca最新文献_第6页

ATMOSPHERIC CORROSION BEHAVIOR OF HOT-DIP GALVANIZED AND CONTINUOUS GALVANIZED STEEL 热镀锌和连续镀锌钢的大气腐蚀行为

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Acta Metallurgica Slovaca Pub Date : 2022-09-24 DOI: 10.36547/ams.28.3.1526

G. Sığırcık, Ömer Yıldırım, T. Tüken

{"title":"ATMOSPHERIC CORROSION BEHAVIOR OF HOT-DIP GALVANIZED AND CONTINUOUS GALVANIZED STEEL","authors":"G. Sığırcık, Ömer Yıldırım, T. Tüken","doi":"10.36547/ams.28.3.1526","DOIUrl":"https://doi.org/10.36547/ams.28.3.1526","url":null,"abstract":"Five years of outdoor atmospheric corrosion tests of hot dip galvanized steel samples were performed, for products of continuous galvanizing and after fabrication batch galvanizing processes. For the purpose of comparison between corrosion performances of these two different galvanizing process products, an industrial coastal area (Gemlik-Bursa/TURKEY) was chosen for outdoor testing, which fits into C4 type corrosive atmosphere definition, according to ISO 9223. Samples were studied in laboratory with accelerated salt spray exposure test and electrochemical methods. Corrosion products formed on exposed samples and cross section of coatings are analyzed by SEM. Lead is observed to change the corrosion characteristics of the coatings with change in constituents of environments. In saline electrolytes, alloying of lead is found to accelerate corrosion rate. This metal deposits as cluster on top layer of the galvanized coatings and acts as strong cathodes with respect to the zinc and accelerates the corrosion rate. It was determined that differences in dip and continuous galvanization processes cause dramatic differences in the elemental composition, morphology and regional hardness values of coatings. In the comparison of corrosion resistance, lower performance of the dip galvanized coating, although it is much thicker, has been shown due to the differences mentioned above.","PeriodicalId":44511,"journal":{"name":"Acta Metallurgica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48434728","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

THERMO-MECHANICAL AND MICROSTRUCTURAL INVESTIGATIONS OF AA 6061/GNPS WELDED JOINTS DEVELOPED BY CONTINUOUS DRIVE FRICTION WELDING 连续驱动摩擦焊AA 6061/GNPS焊接接头的热机械和微观组织研究

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Acta Metallurgica Slovaca Pub Date : 2022-09-24 DOI: 10.36547/ams.28.3.1573

M. Tashkandi, M. Gamil

引用次数: 0

CONTROL OF THE PROCESSES OF PHASE FORMATION OF CARBIDE COMPONENTS IN NICKEL-BASED SUPERALLOYS 镍基高温合金中碳化物组分相形成过程的控制

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Acta Metallurgica Slovaca Pub Date : 2022-06-22 DOI: 10.36547/ams.28.2.1506

A. Glotka, V. Ol’shanetskii

引用次数: 1

SOLID STATE DIFFUSION BONDING OF X70 STEEL TO DUPLEX STAINLESS STEEL X70钢与双相不锈钢的固态扩散连接

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Acta Metallurgica Slovaca Pub Date : 2022-06-22 DOI: 10.36547/ams.28.2.1504

Z. Boumerzoug, Lamia Baghdadi, F. Brisset, D. Solas, T. Baudin

引用次数: 2

PROPERTIES OF Al-Zn-Mg-Cu ALLOY WHEN MODIFIED BY La, Ce, AND THERMAL-MECHANICAL La、Ce和热机械改性Al-Zn-Mg-Cu合金的性能

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Acta Metallurgica Slovaca Pub Date : 2022-06-22 DOI: 10.36547/ams.28.2.1424

D. Nguyen, T. Bui, A. Vu, Manh-Thang Sai, M. K. Pham, Duc-Huy Tran

{"title":"PROPERTIES OF Al-Zn-Mg-Cu ALLOY WHEN MODIFIED BY La, Ce, AND THERMAL-MECHANICAL","authors":"D. Nguyen, T. Bui, A. Vu, Manh-Thang Sai, M. K. Pham, Duc-Huy Tran","doi":"10.36547/ams.28.2.1424","DOIUrl":"https://doi.org/10.36547/ams.28.2.1424","url":null,"abstract":"The influence of La, Ce elements and thermal-mechanical treatment on microstructure and mechanical properties of Al-Zn-Mg-Cu alloy are presented in this study. According to the results, when the alloy was added to the La, Ce elements, after casting, the grain size of samples was around 40-50µm compared to that of without about 65µm; and then these impurity samples attained 30µm after homogeneous mixture the grain sizes. After the cold deformation process, the distance between plates is 10µm. This homogenization process contributes to increasing the ductility of the studied alloy. In addition, the EDS lines study shows that after the combination of the deformation and heat treatment, the uniformation of elements mainly focuses on the boundary and in the grain. After recrystallization annealing, the grain size is around 10 µm with the modification sample. Further, as a result of ability deformation from the tensile test, these results demonstrate that the tensile test obtained 140 % when adding La, Ce contents into the alloy combined with thermal-mechanical treatment. The combined use of La; Ce and thermal-mechanical treatment have increased the ductility of Al-Zn-Mg-Cu alloy. The combination of modification and thermal-mechanical treatment has created a small grain size for the studied alloy.","PeriodicalId":44511,"journal":{"name":"Acta Metallurgica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46994003","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

Bonding of Interface Bimetal Aluminum-Bronze for Bimetal Bushing Produced by Solid Liquid Method 固液法双金属衬套双金属铝青铜界面的粘接

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Acta Metallurgica Slovaca Pub Date : 2022-06-22 DOI: 10.36547/ams.28.2.1253

L. Setyana, N. Santoso, Bambang Suharnadi, Benidiktus Tulung Prayoga, Wiyadi Wiyadi

{"title":"Bonding of Interface Bimetal Aluminum-Bronze for Bimetal Bushing Produced by Solid Liquid Method","authors":"L. Setyana, N. Santoso, Bambang Suharnadi, Benidiktus Tulung Prayoga, Wiyadi Wiyadi","doi":"10.36547/ams.28.2.1253","DOIUrl":"https://doi.org/10.36547/ams.28.2.1253","url":null,"abstract":"Bimetal is a combination of two dissimilar metals that form a metallurgical bond. The manufacture of bimetallic bushing by centrifugal casting has not been widely developed. There is still no recommendation for optimum temperature used in the manufacture. The aim of this research was to determine the first frozen layer temperature of the aluminum when bronze was poured to produce a well-integrated bond interface. The materials used were aluminum and bronze. Molten metal was pouring into the mold alternately. First, aluminum was poured into the mold. Then, bronze was poured gradually to form a bushing aluminum-bronze bimetallic. The temperature variations of the first frozen layer of aluminum were 27º C, 350º C, 400º C, and 450º C when bronze poured. The molten metal was poured with the filling speed of about 0.2 kg/s into a rotating sand mold. The rotational speed of the mold was 350 rpm. The result shows that the bond interface’s width increases as the first frozen layer aluminum temperature increases. As a result, interface wear and hardness are increased compared to the base metal. Hence, centrifugal casting with the first frozen layer aluminum was 450ºC recommended for aluminum-bronze bimetal bushing applications.","PeriodicalId":44511,"journal":{"name":"Acta Metallurgica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46153642","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

AN APPROACH TOWARD PREDICTION OF SM-CO ALLOY’S MAXIMUM ENERGY PRODUCT USING FEATURE BAGGING TECHNIQUE 基于特征套袋技术的sm-co合金最大能积预测方法

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Acta Metallurgica Slovaca Pub Date : 2022-06-22 DOI: 10.36547/ams.28.2.1462

V. Kulyk

引用次数: 0

STUDY ON DEEP DRAWING BEHAVIOR OF THE INTERSTITIAL FREE STEEL IN CORRELATION WITH THE MICROSTRUCTURE 无间隙钢的深冲行为与组织的相关性研究

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Acta Metallurgica Slovaca Pub Date : 2022-06-22 DOI: 10.36547/ams.28.2.1416

E. Brandaleze, M. Romanyuk

引用次数: 0

THE INFLUENCE OF ANNEALING TEMPERATURE ON THE MAGNETIC PROPERTIES OF CRYO-ROLLED NON-ORIENTED ELECTRICAL STEEL 退火温度对冷轧无取向电工钢磁性能的影响

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Acta Metallurgica Slovaca Pub Date : 2022-06-22 DOI: 10.36547/ams.28.2.1471

T. Kvačkaj, I. Demjan, Peter D. Bella, R. Kočiško, P. Petroušek, Alica Fedoriková, J. Bidulská, Miloslav Lupták, P. Jandačka, Marcela Lascsáková

{"title":"THE INFLUENCE OF ANNEALING TEMPERATURE ON THE MAGNETIC PROPERTIES OF CRYO-ROLLED NON-ORIENTED ELECTRICAL STEEL","authors":"T. Kvačkaj, I. Demjan, Peter D. Bella, R. Kočiško, P. Petroušek, Alica Fedoriková, J. Bidulská, Miloslav Lupták, P. Jandačka, Marcela Lascsáková","doi":"10.36547/ams.28.2.1471","DOIUrl":"https://doi.org/10.36547/ams.28.2.1471","url":null,"abstract":"The paper is focused on a comparison of the magnetic properties of the non-oriented isotropic electrical steel containing 3.5% Si. The material was processed by conventional ambient temperature rolling and progressive rolling at the cryogenic conditions at liquid nitrogen. Deformations of the samples in both thermal conditions were in the interval εÎ<5;35>[%]. Subsequently, the samples were heat treated at temperatures TÎ<900;1100> [°C]. Measuring of the magnetic properties was carried out in an alternating magnetic field at frequencies f= 50; 100; 150 Hz. At a frequency of 50 Hz were achieved smallest magnetic losses and therefore further measurements were made at a given frequency. Followed measurements of the magnetic induction were conducted at different intensities of the magnetic field. EBSD analyses were performed to obtain the IPF maps on which the resulting structure was evaluated after processing of the material. The specific magnetic losses were compared to different processing methods. The best magnetic properties defined as by minimal values of core loses were reached after samples rolled at cryogenic temperature followed by subsequently annealed. Also, higher proportion of cubic texture was archived after rolling at cryogenic temperature with compared to samples processed at ambient temperature.","PeriodicalId":44511,"journal":{"name":"Acta Metallurgica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42675192","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: 2

Performance Evaluation of Coconut Oil Based Cutting Fluid with Biodegradable Additives on Cylindrical Turning of AISI 1040 Carbon Steel 添加可生物降解添加剂的椰子油基切削液在AISI 1040碳钢圆柱车削中的性能评价

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Acta Metallurgica Slovaca Pub Date : 2022-03-15 DOI: 10.36547/ams.28.1.1256

S. Adedayo, Bright Omoshola, P. Omoniyi

{"title":"Performance Evaluation of Coconut Oil Based Cutting Fluid with Biodegradable Additives on Cylindrical Turning of AISI 1040 Carbon Steel","authors":"S. Adedayo, Bright Omoshola, P. Omoniyi","doi":"10.36547/ams.28.1.1256","DOIUrl":"https://doi.org/10.36547/ams.28.1.1256","url":null,"abstract":"This article analyzed the effect of coconut oil-based cutting fluid with emulsion properties of 5%. The cutting fluid was evaluated by comparing it with conventional cutting fluid (Petroleum Based). Machining temperature at the tool-workpiece interface was measured during straight turning operation on CNC machine at various cutting speeds, depths of cut, and fixed feed rate of 7.5 mm/min for 15 minutes. The Response Surface Methodology (RSM) was also used to determine the machining parameters' effect on each cutting fluid's temperature at the tool-workpiece interface. It was observed that the developed coconut cutting fluid outperformed the other cutting fluids as a coolant at all experimented speeds, with a maximum temperature of 63.5 °C at the working zone as against 90.6 °C observed for conventional cutting fluid and 163.8 °C for dry turning. The viscosity values obtained from the developed cutting fluid between 40 °C and 100 °C show the tendency of the developed cutting fluid to maintain its lubricity at a higher temperature. Depth of cut was also observed to have a significant effect on the temperature at the tool-workpiece interface.","PeriodicalId":44511,"journal":{"name":"Acta Metallurgica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46680115","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