Metallurgical Research & Technology最新文献_第9页

Effect of rare earth on inclusion evolution in industrial production of HRB500E steel 稀土对HRB500E钢工业生产中夹杂物演化的影响

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/METAL/2021022

Jian Kang, Yan-chong Yu, Zhang Jinling, Chao Chen, She-bin Wang

引用次数: 5

Enhancement of boron removal from metallurgical-grade silicon by titanium addition during slag refining 渣精炼过程中加入钛对冶金级硅除硼的促进作用

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/metal/2021085

Ya-qiong Li, Lifeng Zhang, Ligang Liu

引用次数: 0

Recent advances of silicon wafer cutting technology for photovoltaic industry 光伏产业硅片切割技术的最新进展

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/metal/2021091

Chang-yong Chen, Meng Sun, Xiao-qing Chen, Yi Wang, Zhouhua Jiang, Jianan Zhou

{"title":"Recent advances of silicon wafer cutting technology for photovoltaic industry","authors":"Chang-yong Chen, Meng Sun, Xiao-qing Chen, Yi Wang, Zhouhua Jiang, Jianan Zhou","doi":"10.1051/metal/2021091","DOIUrl":"https://doi.org/10.1051/metal/2021091","url":null,"abstract":"Using ultra-fine wire saw to cut solar grade silicon wafer is a very precise technology. In the past 20 years, researchers have done a lot of research and made great progress. The cutting method of silicon rod has developed from single line cutting to multi line simultaneous cutting, which greatly improves the production efficiency and the yield of silicon rod. However, the problems of high cutting loss, low cutting efficiency, and large surface damage of silicon wafer need to be solved; The surface of wire saw line has developed from smooth surface to coated diamond abrasive, which greatly improves the service life of wire saw line; The method of coated diamond abrasive on the surface of wire saw line has developed from resin consolidation to electroplating consolidation, which greatly improves the service life of wire saw line it improves the firmness of the coating; The arrangement of wire saw wire has developed from single wire to multi wire stranding, which makes the wire saw wire can cut large-size silicon rod; The minimum thickness of silicon wafer that can be cut is about 100–140 µm according to the perspective of stress analysis, while the excetive value should be located by more research.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"53 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91025386","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

Identification of crystal plasticity parameters for a non-irradiated and irradiated A508 bainite steel 未辐照和辐照A508贝氏体钢晶体塑性参数的确定

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/METAL/2021006

C. Nguyen, G. Cailletaud, F. Barbe, B. Marini, D. Nguyen, H. Phan

{"title":"Identification of crystal plasticity parameters for a non-irradiated and irradiated A508 bainite steel","authors":"C. Nguyen, G. Cailletaud, F. Barbe, B. Marini, D. Nguyen, H. Phan","doi":"10.1051/METAL/2021006","DOIUrl":"https://doi.org/10.1051/METAL/2021006","url":null,"abstract":"This paper presents the identification of dislocation-density-based crystal plasticity parameters for a A508 Cl3 bainite steel in non-irradiated and irradiated states and at different temperatures. The representative volume element for the identification process is a cube containing 1000 steel grains represented by a Voronoi mosaic discretized by finite elements. The grains are assigned crystallographic orientations corresponding to an isotropic texture. The crystal constitutive model is based on a plastic flow law, a hardening law, and a law of evolution of dislocation densities. Modeling parameters are determined by a two-step calculation with two different crystal structures: (1) using a simple structure with 343 identical grains to identify 7 parameters, (2) using a Voronoi tessellation of 1000 grains to refine the parameters. Thereafter, the calculated stress-strain curves are compared with experimental stress-strain curves. The results show that the simulated stress-strain curves are in good agreement with those of experiments, highlighting the reliability of the proposed procedure to account for the significant effects of irradiation and temperature.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"34 1","pages":"204"},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89125821","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

Effect of tool pin geometry on microstructure and mechanical properties of friction stir spot welds of 7075-T651 aluminium alloy 刀销几何形状对7075-T651铝合金搅拌摩擦点焊组织和力学性能的影响

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/METAL/2020093

O. Ekinci, Z. Balalan

{"title":"Effect of tool pin geometry on microstructure and mechanical properties of friction stir spot welds of 7075-T651 aluminium alloy","authors":"O. Ekinci, Z. Balalan","doi":"10.1051/METAL/2020093","DOIUrl":"https://doi.org/10.1051/METAL/2020093","url":null,"abstract":"7075-T651 aluminium alloy sheets were overlapped and friction stir spot welded using two welding tools having different pin geometries (one with a conical pin and other with a triangular pin) and 800, 1200 and 1600 revolution per minute (rpm) tool rotation speeds at a constant tool plunge and removal speed of 7.3 mm/min, tool plunge depth of 3.8 mm and tool dwell time of 5 s. Microstructure, Vickers microhardness, tensile shear strength, fracture surface after tensile shear test and impact energy of the produced friction stir spot welds were examined. As a result, the welds made via triangular pin tool had considerably higher tensile shear loads than the welds made via conical pin tool since the weld bond widths (stir zones) of the welds made via triangular pin tool were larger. The strongest welds made at 1200 rpm for conical pin tool and triangular pin tool. The tensile shear loads of the welds increased significantly when tool rotation speed increased from 800 to 1200 rpm for both welding tools and then decreased slightly for triangular pin tool and dramatically for conical pin tool with further increasing tool rotation speed from 1200 to 1600 rpm. Maximum tensile shear load of 7.776 kN and impact energy of 16 J obtained in the weld made at 1200 rpm using triangular pin tool. The welds made at 800 rpm had lowest impact energy. The lowest hardness values found in the heat affected zones of the welds. Circumferential fracture mode for conical pin tool welds and nugget pull-out fracture mode for triangular pin tool welds observed after tensile tests.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"17 1","pages":"110"},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85130168","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

Sensitivity analysis, identification and validation of the dislocation density-based model for metallic materials 基于位错密度的金属材料模型的灵敏度分析、识别与验证

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/METAL/2021037

D. Szeliga, Natalia Czyżewska, Konrad Klimczak, J. Kusiak, Pawel M. Morkisz, P. Oprocha, M. Pietrzyk, Paweł Przybyłowicz

引用次数: 4

An investigation on electrical discharge metal matrix coating of ZE41A magnesium alloy ZE41A镁合金放电金属基体涂层的研究

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/METAL/2021034

U. Elaiyarasan, V. Satheeshkumar, C. Senthilkumar

{"title":"An investigation on electrical discharge metal matrix coating of ZE41A magnesium alloy","authors":"U. Elaiyarasan, V. Satheeshkumar, C. Senthilkumar","doi":"10.1051/METAL/2021034","DOIUrl":"https://doi.org/10.1051/METAL/2021034","url":null,"abstract":"The present paper studied the experimental investigation on electrical discharge coating of ZE41A magnesium alloy (EDC) with tungsten carbide-copper (WC/Cu) powder metallurgy (PM) electrode. In order to attain the surface characteristics, three parameters were selected such as compaction load, current and pulse on time. Response characteristics such as material transfer rate (MTR) and surface roughness (Ra) were considered in this study. Central composite design in response surface methodology was applied to conduct experiments. Empirical models were developed for MTR and SR. AVOVA test was conducted to identify the most influence parameters. Additionally, optimized parameters were identified by response surface optimizer. It is observed that the current play a vital role in increasing the MTR and minimize the SR of the coated surface followed by compaction load and pulse on time. Various studies such as scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were carried out on the coated surface. Bulk mass deposition and bigger craters were observed in the surface coated with 150 MPa and 3A respectively.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"15 1","pages":"314"},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78046687","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: 5

Coal macerals and their separation methodologies – A review 煤矿物及其分离方法。综述

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/METAL/2021023

D. Nag, Govind Dubey, P. S. Dash, S. Mohapatra

引用次数: 7

Parametric effect on material removal rate and surface roughness of electrical discharge machined magnesium alloy 参数对电火花加工镁合金材料去除率和表面粗糙度的影响

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/metal/2021089

Narayanasamy Ananthi, U. Elaiyarasan, V. Satheeshkumar, C. Senthilkumar, S. Sathiyamurthy, K. Nallathambi

{"title":"Parametric effect on material removal rate and surface roughness of electrical discharge machined magnesium alloy","authors":"Narayanasamy Ananthi, U. Elaiyarasan, V. Satheeshkumar, C. Senthilkumar, S. Sathiyamurthy, K. Nallathambi","doi":"10.1051/metal/2021089","DOIUrl":"https://doi.org/10.1051/metal/2021089","url":null,"abstract":"Magnesium and its alloys play a vital role in various applications such as automobile, aircraft, biomedical and military etc. Mg alloys have superior characteristics such as light weight, high strength, good damping capacity and easily castability etc. Eventhough it has attractive range of properties, the machining of magnesium alloys using conventional machining methods is difficult. To overcome that issue, non traditional machining is considered as a potential process. EDM is an electro thermal process extensively used for machining hard materials. In this investigation, the ZE41A magnesium alloy is machined using EDM with copper electrode. In order to improve surface characteristics such as material removal rate (MRR) and surface roughness (SR), various parameters namely current, pulse on time and pulse off time were selected. The regression values of MRR and SR are 97.20% and 99.62% respectively indicating an empirical relationship between the parameters and responses. Pulse off time was found as a significant parameter on the response followed by pulse on time and current. MRR and SR increased with increasing current, pulse on time and pulse off time. At a current of 5A, the produced spark density is high so that the removed quantity of material from the workpiece is high. At a pulse on time of 95 μs, the spark intensity is high affecting the local temperature in the machined zone, and hence MRR increases. SR drastically increases at increasing current. At higher current, large size crater are observed on the machined surface that made the surface rough, and hence SR increases.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"133 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77375254","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

Impurity removal from brass alloy by slag refining treatment 炉渣精炼法去除黄铜合金杂质

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/METAL/2021017

Ya-qiong Li, Lifeng Zhang, Xinyu Cai, Ying Zhang, Ligang Liu, Zhen-Hua Zhao

引用次数: 6