Transactions of The Indian Institute of Metals最新文献_第8页

Dissolution Kinetics of Copper from Low-Grade Goldfieldite ore by Hydrometallurgical Routes 通过湿法冶金路线从低品位金田铁矿石中溶解铜的动力学研究

IF 1.6 4区材料科学

Transactions of The Indian Institute of Metals Pub Date : 2024-07-05 DOI: 10.1007/s12666-024-03380-2

Kehinde I. Omoniyi, Shemang Y. Chindo, Edith B. Agbaji, Alafara A. Baba, Mustapha A. Raji

{"title":"Dissolution Kinetics of Copper from Low-Grade Goldfieldite ore by Hydrometallurgical Routes","authors":"Kehinde I. Omoniyi, Shemang Y. Chindo, Edith B. Agbaji, Alafara A. Baba, Mustapha A. Raji","doi":"10.1007/s12666-024-03380-2","DOIUrl":"https://doi.org/10.1007/s12666-024-03380-2","url":null,"abstract":"In recent times, almost 25% of global copper obtained by leaching-cum-solvent extraction routes is considered profitable for the manufacturing of high-quality cathode material. The dissolution kinetics of copper from low-grade goldfieldite ore was examined in ammonia–ammonium sulfate media. In this study, the influences of leachant concentration, reaction temperature, and particle size on goldfieldite ore dissolution were considered. Thus, the experimental results affirmed that the dissolution rate increases steadily with increase in leachant concentration, reaction temperature, and decreasing particle sizes. At established conditions (0.5 mol/L NH3–(NH4)2SO4; 75 °C; and 45 µm), 89.9% dissolution efficiency was achieved within 120 min. The activation energy (Ea) and reaction order calculated to be 34.8 kJ/mol and 1.045 supported the diffusion control mechanism with a first-order relation. Hence, the pregnant leach solution obtained at the optimal leaching conditions was accordingly treated and beneficiated to produce a high-grade copper chloride (CuCl2: 00-348-1947), recommended for various industrial utilities.","PeriodicalId":23224,"journal":{"name":"Transactions of The Indian Institute of Metals","volume":"40 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141568332","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

Characteristics and Evaluation of Al/Al2O3/SiC/Mg Nano-Powder on Perforated SS316L Composite Bimetallic Sheet 穿孔 SS316L 复合双金属片上的 Al/Al2O3/SiC/Mg 纳米粉体的特性与评估

IF 1.6 4区材料科学

Transactions of The Indian Institute of Metals Pub Date : 2024-07-04 DOI: 10.1007/s12666-024-03391-z

Ayush Trivedi, Vijay Kumar Dwivedi, Mayank Agarwal

{"title":"Characteristics and Evaluation of Al/Al2O3/SiC/Mg Nano-Powder on Perforated SS316L Composite Bimetallic Sheet","authors":"Ayush Trivedi, Vijay Kumar Dwivedi, Mayank Agarwal","doi":"10.1007/s12666-024-03391-z","DOIUrl":"https://doi.org/10.1007/s12666-024-03391-z","url":null,"abstract":"The enhancement of nuclear and high-temperature applications largely depends on the cladding procedure for the composition of bimetallic sheets made of stainless steel. The current study presents a modified version of a unique experimental set-up for a perforated substrate sheet with ball-milled, nano-scale clad powder reinforcement. To create the clad material, Al2O3, SiC nano-sized grain powders and Mg coarse grain powder were combined with fine Al powder particles using a ball milling technique. In parallel, SS316L substrate sheets were utilised to fabricate bimetallic composite sheets and were perforated at regular intervals for a specific area. In an inert gas environment, a conventional heating process with mild initial compaction was offered for the sintering process to progress upon. The influence of the processing on the interfaces is suggested by the microstructure, energy-dispersive X-ray (EDX) and micro-hardness results from different sites in the synthesised bimetallic composite sheet. The processing methods and how they affect the diffusion behaviour of the clad intersection and perforation zone are described in depth in this experimental study.","PeriodicalId":23224,"journal":{"name":"Transactions of The Indian Institute of Metals","volume":"38 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552150","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

Tribological Assessment of As-Built and Annealed Carbon Fiber-Reinforced Polypropylene Composites Fabricated Through FDM with Varying Layer Thicknesses 通过 FDM 制造不同层厚的碳纤维增强聚丙烯复合材料的摩擦学评估

IF 1.6 4区材料科学

Transactions of The Indian Institute of Metals Pub Date : 2024-07-04 DOI: 10.1007/s12666-024-03397-7

S. Sundararaj, S. Selvam, C. Karthikeyan, P. Govindan

{"title":"Tribological Assessment of As-Built and Annealed Carbon Fiber-Reinforced Polypropylene Composites Fabricated Through FDM with Varying Layer Thicknesses","authors":"S. Sundararaj, S. Selvam, C. Karthikeyan, P. Govindan","doi":"10.1007/s12666-024-03397-7","DOIUrl":"https://doi.org/10.1007/s12666-024-03397-7","url":null,"abstract":"This study examines the effects of FDM-produced carbon fiber-reinforced polypropylene composites, comparing as-built and annealed variants with different layer thicknesses. Such composites, renowned for their remarkable mechanical properties, including high specific stiffness and strength, are extensively utilized across diverse industries like automobile, aerospace, electronics etc. Twenty four test samples, with layer thicknesses of 0.1 mm, 0.16 mm, and 0.24 mm, were manufactured on an FDM printer. Pin-on-disc tribological tests were conducted, applying loads of 5 N, 10 N, 15 N, and 20 N with sliding velocities of 1 and 3 m/s, respectively. Results indicate that the wear rate increases and the coefficient of friction decreases with higher applied load and sliding velocity for both as-built and annealed specimens. This trend persists due to increased compressive load during sliding and reinforced particle presence, ensuring low wear rates and friction coefficients across varying layer thicknesses. The specimen with a 0.1 mm layer thickness displayed superior bonding, resulting in a lower wear rate and coefficient of friction. A better understanding of hardness and surface roughness was observed for annealed samples with lower layer thickness compared to other test samples.","PeriodicalId":23224,"journal":{"name":"Transactions of The Indian Institute of Metals","volume":"5 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552148","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

Utilization of High-Alumina Iron Ore in Pellet Making Through Process Optimization 通过工艺优化在制粒过程中利用高铝铁矿石

IF 1.6 4区材料科学

Transactions of The Indian Institute of Metals Pub Date : 2024-07-03 DOI: 10.1007/s12666-024-03390-0

Ravindra Kumar, Ravi Kant Sagar, Rameshwar Sah, Vyshnu Kumar, Raghunath Srinidhi, G. Balachandran

{"title":"Utilization of High-Alumina Iron Ore in Pellet Making Through Process Optimization","authors":"Ravindra Kumar, Ravi Kant Sagar, Rameshwar Sah, Vyshnu Kumar, Raghunath Srinidhi, G. Balachandran","doi":"10.1007/s12666-024-03390-0","DOIUrl":"https://doi.org/10.1007/s12666-024-03390-0","url":null,"abstract":"The demand for pellets in blast furnaces has recently increased because of their uniform shape and size, controlled chemistry, iron-enriched feed, high strength, and quality consistency. To meet this demand, low- and medium-grade iron ore fines with alumina (> 3.5 wt%) must be used for pelletization because of the limited availability of high-grade ore. The alumina present in the ore has an adverse effect on the pellet properties because of its refractory nature. Therefore, a study was conducted to optimize the firing temperature and chemistry of the feed blend to produce pellets with good pellet properties. Firing temperature (1280 °C, 1300 °C, and 1320 °C), carbon (1 and 1.2%) in the form of coke fines, and MgO (0.60 and 0.80%) in the form of dolomite were used to optimize the pellet-making process for high-alumina iron ore fines. The best result was obtained for feed blend with 1.2% carbon and 0.80% MgO fired at 1300 °C to produce pellets of cold compressive strength more than 300 kg/pellet, reduction degradation index (− 6.33 mm) near 7%, and porosity near 20%.","PeriodicalId":23224,"journal":{"name":"Transactions of The Indian Institute of Metals","volume":"22 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525349","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

Analysis of Gas Metal Arc Welding Process Using Improved Complete Ensemble Empirical Mode Decomposition with Adaptive Noise 利用带有自适应噪声的改进型完全集合经验模式分解分析气体金属弧焊工艺

IF 1.6 4区材料科学

Transactions of The Indian Institute of Metals Pub Date : 2024-07-03 DOI: 10.1007/s12666-024-03367-z

Vikas Kumar, Manoj K. Parida, Shaju K. Albert

{"title":"Analysis of Gas Metal Arc Welding Process Using Improved Complete Ensemble Empirical Mode Decomposition with Adaptive Noise","authors":"Vikas Kumar, Manoj K. Parida, Shaju K. Albert","doi":"10.1007/s12666-024-03367-z","DOIUrl":"https://doi.org/10.1007/s12666-024-03367-z","url":null,"abstract":"The gas metal arc welding (GMAW) process, prevalent in construction and fabrication sectors, traditionally relies on postproduction evaluations, which are both costly and time-consuming. This study proposes a more efficient, real-time monitoring approach utilizing high-speed data acquisition and analysis systems to record and scrutinize voltage and current fluctuations during welding. Various decomposition techniques, including EMD (empirical mode decomposition), EEMD (ensemble empirical mode decomposition with noise), CEEMDAN (complete ensemble empirical mode decomposition with adaptive noise), and ICEEMDAN (improved complete ensemble empirical mode decomposition with adaptive noise), were analyzed to assess arc variations and thereby evaluate GMAW process quality. The research identified an optimal technique for analyzing non-stationary welding signals, further applied to real-time signals using decomposition and time–frequency representation (TFR) techniques. Findings indicate that key GMAW parameters, such as metal transfer mode and penetration depth, correlate significantly with the intrinsic mode functions (IMFs) and TFRs of decomposed signals. The study suggests that the introduced techniques can effectively analyze the influence of different shielding gases and arc currents on the GMAW process, presenting a promising method for real-time GMAW process monitoring.","PeriodicalId":23224,"journal":{"name":"Transactions of The Indian Institute of Metals","volume":"9 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525350","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

CoCrFeNiMoTi High-Entropy Alloy Reinforced Mg Matrix Composites Produced by Multi-pass Friction Stir Processing: Focus on Pin Geometry, Microstructure and Mechanical Properties 通过多道搅拌摩擦工艺生产的 CoCrFeNiMoTi 高熵合金增强镁基复合材料：关注针脚几何形状、微观结构和力学性能

IF 1.6 4区材料科学

Transactions of The Indian Institute of Metals Pub Date : 2024-07-03 DOI: 10.1007/s12666-024-03394-w

H. R. Ezatpour, M. Jalalabadi, Y. Huo, H. Sazegaran

引用次数: 0

Effect of Zinc Addition on the Microstructure and Properties of Al–Si–Cu–Mg Cast Alloy 加锌对铝硅铜镁铸造合金微观结构和性能的影响

IF 1.6 4区材料科学

Transactions of The Indian Institute of Metals Pub Date : 2024-07-02 DOI: 10.1007/s12666-024-03389-7

Jiale Zheng, Wenru Hu, Jinlong Kong, Xiaodong Du

引用次数: 0

Influence of Tool Probe Profiles on the Microstructure Evolution and Mechanical Properties of Al–Zn–Mg–Cu Alloy Friction Stir Weldment 工具探针剖面对 Al-Zn-Mg-Cu 合金摩擦搅拌焊接微观结构演变和力学性能的影响

IF 1.6 4区材料科学

Transactions of The Indian Institute of Metals Pub Date : 2024-07-01 DOI: 10.1007/s12666-024-03388-8

B. Nikhil, P. Govindan, D. Sunilkumar, M. P. Roshindas

{"title":"Influence of Tool Probe Profiles on the Microstructure Evolution and Mechanical Properties of Al–Zn–Mg–Cu Alloy Friction Stir Weldment","authors":"B. Nikhil, P. Govindan, D. Sunilkumar, M. P. Roshindas","doi":"10.1007/s12666-024-03388-8","DOIUrl":"https://doi.org/10.1007/s12666-024-03388-8","url":null,"abstract":"The present study aims to investigate the influence of tool profiles such as hybrid square, hybrid triangular and conventional threaded tapered on the microstructure evolution and mechanical properties of the aluminium alloys of grade AA7075-T651. The softening of the thermo mechanical affected zone/heat affected zone is the main issue, and it weakens the weldment, which in turn is detrimental to the mechanical properties. There are limited studies on the influence of tool profiles on the mechanical properties of FSW of AA7075-T651. The weld joints were fabricated with the optimised parameters using the design of experiment ANOVA analysis. The processed weldments with all three tool profiles are characterised on the ground of microstructure evolution using optical microscopy, electron back scattered diffraction and correlated with mechanical properties such as hardness and tensile test. The results conceded that the hybrid square tool profile has a maximum ultimate strength of 450.3 MPa and elongation of 7% with process parameters such as rotational speed of 1325 rpm and 120 mm/min.","PeriodicalId":23224,"journal":{"name":"Transactions of The Indian Institute of Metals","volume":"64 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141531937","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

Unveiling the Microstructural Segregation and Micro-hardness Behaviour in Ti-6Al-4 V Alloy Prepared through Copper Mould Casting 揭示铜模铸造制备的 Ti-6Al-4 V 合金的微结构偏析和显微硬度行为

IF 1.6 4区材料科学

Transactions of The Indian Institute of Metals Pub Date : 2024-06-29 DOI: 10.1007/s12666-024-03386-w

Juhi Rani Verma, Yogesh Prabhu, Abhilasha Jain, Jatin Bhatt

{"title":"Unveiling the Microstructural Segregation and Micro-hardness Behaviour in Ti-6Al-4 V Alloy Prepared through Copper Mould Casting","authors":"Juhi Rani Verma, Yogesh Prabhu, Abhilasha Jain, Jatin Bhatt","doi":"10.1007/s12666-024-03386-w","DOIUrl":"https://doi.org/10.1007/s12666-024-03386-w","url":null,"abstract":"In the present work, copper mould casting is used to prepare Ti-6Al-4 V alloy in the form of a cylindrical rod of dimension (left( {7.5;{text{mm }}emptyset times 33;{text{mm L}}} right)). Microstructural and grain size changes are observed in different regions along the length of the rod sample suggesting the influence of cooling rate during solidification. The present study is undertaken to investigate the microstructural changes in three different regions along the length of the sample. Cooling rates calculated using standard empirical method at different regions are found to be in the range of ~ 1.53 (times) 104–4.3 (times) 104 K/s. The obtained alloy is analysed using micro-indentation to determine the hardness. The present study also probes into the understanding of chemical interaction among the participating elements resulting in bond formation to explain the micro-segregation effect. Grain size variation is observed in the range of 149–411 µm within the same rod sample along the longitudinal direction. This study helps to understand the formation of graded microstructure in Ti-6Al-4 V useful in load-bearing applications.","PeriodicalId":23224,"journal":{"name":"Transactions of The Indian Institute of Metals","volume":"32 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141500997","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

metafur: Digital Twin System of a Blast Furnace metafur：高炉数字双系统

IF 1.6 4区材料科学

Transactions of The Indian Institute of Metals Pub Date : 2024-06-28 DOI: 10.1007/s12666-024-03374-0

Sri Harsha Nistala, Rajan Kumar, Manendra Singh Parihar, Venkataramana Runkana

{"title":"metafur: Digital Twin System of a Blast Furnace","authors":"Sri Harsha Nistala, Rajan Kumar, Manendra Singh Parihar, Venkataramana Runkana","doi":"10.1007/s12666-024-03374-0","DOIUrl":"https://doi.org/10.1007/s12666-024-03374-0","url":null,"abstract":"Blast furnace ironmaking accounts for approximately 70% of the total energy consumption and emissions in steelmaking. Hot metal quality has a significant impact on the operation of steelmaking units while blast furnace productivity and fuel rate impact economics of the entire steel plant. We have developed a digital twin system ‘metafur’ for an integrated blast furnace that receives burden quality and process data from various sources in real-time, predicts blast furnace KPIs, and identifies and recommends setpoints for manipulated variables to optimize the KPIs for any given burden quality. The digital twin system is designed to address day-to-day operational challenges of the blast furnace by interacting with an actual blast furnace in real-time. It comprises communication, real-time data pre-processing, time lag and regime identification, blast furnace models, online blast furnace optimizer, and self-monitoring and self-learning modules. It has been tested with data from multiple industrial-scale blast furnaces. Process optimization using metafur revealed opportunities for improving productivity and fuel consumption at multiple agglomerate levels. metafur would be a useful tool for real-time monitoring, optimization, and sustainable operation of industrial blast furnaces.","PeriodicalId":23224,"journal":{"name":"Transactions of The Indian Institute of Metals","volume":"17 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141500998","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