Article
Materials Science, Multidisciplinary
Matheus de Medeiros Tavares, Shuigen Huang, Jinhua Huang, Jozef Vleugels, Meysam Mashhadikarimi, Uilame Umbelino Gomes
Summary: This study investigates the influence of milling parameters and sintering cycle on the microstructure and properties of cemented carbides. Different milling methods and sintering temperatures were used to study the variations in microstructure, and the formation of bi-layered structured materials with different hardness and toughness was observed.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Ceramics
Meng Li, Manfeng Gong, Zanlin Cheng, Deyun Mo, Lei Wang, Jan Dusza, Chengyu Zhang
Summary: WC-Co-Ti3SiC2 cemented carbides with different fractions of Ti3SiC2 were successfully prepared and characterized in this study. The addition of Ti3SiC2 resulted in refined WC grains in the composites, and the refinement was achieved by the decomposition of Ti3SiC2. The optimal composition of 3.0 wt% Ti3SiC2 exhibited excellent hardness and indentation fracture toughness values.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Xiao-Chun Deng, Xiao-Dong Kang, Guo-Hua Zhang
Summary: WC-Co cemented carbides were synthesized in situ through carbothermal prereduction of WO3 and Co2O3 followed by carbonization-vacuum sintering. Higher prereduction temperature led to larger grain sizes and higher fracture toughness, but lower hardness for both WC-6Co and WC-12Co cemented carbides. Increasing Co content also improved fracture toughness while reducing hardness. Additionally, higher prereduction temperature or Co content resulted in larger WC grain sizes and transgranular fracture as the dominant mode.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Andrei Chychko, Jose Garcia, Veronica Collado Cipres, Erik Holmstrom, Andreas Blomqvist
Summary: This study collected over 2500 published experimental data on the hardness and indentation fracture toughness of cemented carbides in the past 40 years, illustrating the influence of microstructure, chemical composition, and processing on the hardness-toughness relationship. Two-dimensional plots were used for visualizing the experimental information, serving as a well-structured database for the cemented carbide community.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Xiao-Hui Yang, Kai-Fei Wang, Kuo-Chih Chou, Guo-Hua Zhang
Summary: Fine grained WC-Co-Ni cemented carbides with low binder content were successfully manufactured via powder metallurgy, with experimental results showing that adjusting the cobalt and nickel contents can result in alloys with excellent hardness and fracture toughness.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Cheng Qian, Yong Liu, Huichao Cheng, Kun Li, Bin Liu, Xin Zhang
Summary: In this study, CoNiFeCr high entropy alloy was used as a binder in cemented carbides, and the microstructure of WC-HEA cemented carbides with different binder components and carbon contents was investigated. Compared with WC-Co, WC-CoNiFeCr exhibited smaller WC grain size, smoother grain shape, higher transverse rupture strength, and slightly lower hardness.
Article
Materials Science, Multidisciplinary
Hong Zeng, Wenbin Liu, Chongbin Wei
Summary: The microstructure and properties of cemented carbides were investigated before and after the addition of Ru. The addition of Ru increased the hardness and elastic modulus of the binder phase, and enhanced the oxidation resistance at high temperatures. This solid solution-strengthening effect of Ru in the binder phase was significant for improving high-temperature hardness and characteristics of the alloy.
MATERIALS SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Xiao-Hui Yang, Kai-Fei Wang, Guo-Hua Zhang, Kuo-Chih Chou
Summary: WC-Co cemented carbides with low cobalt content were successfully manufactured by powder metallurgy method. Adding VC can significantly improve the microstructure and mechanical properties of the alloys, leading to increased Vickers hardness and fracture toughness. The inclusion of VC also results in crack deflexion and transgranular behavior, which contribute to enhancing the fracture toughness of the cemented carbides.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Ming Xing, Haibin Wang, Zhi Zhao, Hao Lu, Chao Liu, Liangliang Lin, Mingsheng Wang, Xiaoyan Song
Summary: The microstructures and mechanical properties of WC-Co cemented carbides fabricated by the laser powder bed fusion (LPBF) process and subsequent heat-treatment were investigated, revealing the formation of nano-sized particles within WC grains after heat-treatment that enhanced the mechanical properties. Cutting performance tests under actual working conditions showed excellent service properties and promising application prospects for LPBF printed cemented carbides.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Xiaolong Cai, Lei Guo, Baowei Cao, Xin Li, Mingxin Liu, Yunhua Xu
Summary: The mechanical properties of cast iron surface were improved by fabricating tungsten carbide interlayers through different heat treatment methods. The structure and phase composition of the layer were analyzed, with emphasis on the effect of vacuum atmosphere temperature on the interfacial structure. Results showed that the diffusion coefficient of carbon in the WC layer was 1.57 x 10(-9) cm(2)/s, and the hardness and elastic modulus of the layer were 2.4-3.8 times and 3.5-4.4 times larger than that of the substrate, respectively. The calculated fracture toughness for the layer decreased with increasing load, indicating a strong dependence on applied load.
Article
Nanoscience & Nanotechnology
Rengui He, Qiumin Yang, Bin Li, Jia Lou, Hailin Yang, Jianming Ruan
Summary: The study reveals that adjusting the WC grain size distribution by adding ultrafine WC and coarse WC can significantly impact the grain growth morphology of cemented carbides. Hardness and fracture toughness tests demonstrate that alloys containing 6 wt% ultrafine WC exhibit the best mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
L. Ortiz-Membrado, N. Cuadrado, D. Casellas, J. J. Roa, L. Llanes, E. Jimenez-Pique
Summary: The study aimed to obtain the fracture toughness value of single grains of tungsten carbide, utilizing microcantilever and micropillar samples tested with a nanoindenter. The average fracture toughness value for single WC grains within the two-phase interpenetrated network in cemented carbides was found to be 5.6 +/- 0.8 MPa·m1/2, consistent with results from other macroscopic tests.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Xiaoxiao Zhang, Jin Zhang, Jiawei Ding
Summary: This study investigates the effects of graphene oxide (GO) on the mechanical and tribological properties of WC-Co cemented carbide. It is found that the addition of GO has little effect on the densification process and grain size of the carbide, but it improves the fracture toughness by 29.1%. The friction coefficient and specific wear rate are significantly reduced due to the added GO. The bridging mechanism caused by GO is considered as the main reason for the toughening effect in the carbide.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Xiao-Chun Deng, He Zhang, Guo-Hua Zhang
Summary: By combining spray drying and in-situ synthesized technology, WC-10Co cemented carbides with uniform composition were prepared through vacuum sintering. The study found that adding 0.5 wt% CeO2 can refine the WC grains and improve the mechanical properties. Additionally, co-doping with 0.5 wt% CeO2 and 0.5 wt% VC can further enhance the comprehensive mechanical properties of the alloy.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Vitaliy Kazymyrovych, Vyacheslav Kryzhanivskyy
Summary: High temperatures generated during machining can adversely affect the cutting tool, making it crucial to understand and quantify the tool material's ability to conduct heat effectively. The thermal conductivity, diffusivity, and specific heat of 20 cemented carbide grades were studied using light flash analysis across temperatures ranging from 22 to 800 degrees Celsius. The results reveal the influence of WC grain size, Co content, and the presence of cubic carbides on the thermal properties of cemented carbides. Regression analysis showed that thermal conductivity could be estimated accurately based on the material's chemical composition and coercivity value.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Peyala Dharmaiah, Soon-Jik Hong
JOURNAL OF ELECTRONIC MATERIALS
(2017)
Article
Materials Science, Multidisciplinary
R. Kurji, N. Coniglio, J. Griggs, R. Ghomashchi
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
(2017)
Article
Materials Science, Ceramics
Peyala Dharmaiah, Soon-Jik Hong
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2018)
Article
Engineering, Manufacturing
M. S. Uddin, M. F. R. Sidek, M. A. Faizal, Reza Ghomashchi, A. Pramanik
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME
(2017)
Article
Materials Science, Multidisciplinary
Hamidreza Riazi, Fakhreddin Ashrafizadeh, Sayed Rahman Hosseini, Reza Ghomashchi, Rong Liu
MATERIALS CHARACTERIZATION
(2017)
Article
Nanoscience & Nanotechnology
Hamidreza Riazi, Fakhreddin Ashrafizadeh, Sayed Rahman Hosseini, Reza Ghomashchi
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2017)
Article
Engineering, Manufacturing
Houman Alipooramirabad, Anna Paradowska, Reza Ghomashchi, Mark Reid
JOURNAL OF MANUFACTURING PROCESSES
(2017)
Article
Materials Science, Multidisciplinary
Raihan Rumman, Lee Chang Chuan, Jamie S. Quinton, Reza Ghomashchi
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2019)
Article
Multidisciplinary Sciences
Fangchang Ding, Qiujin Wang, Shaofei Zhou, Guochen Zhao, Ying Ye, Reza Ghomashchi
ROYAL SOCIETY OPEN SCIENCE
(2020)
Article
Materials Science, Multidisciplinary
Sadeq Hooshmand Zaferani, Reza Ghomashchi, Daryoosh Vashaee
Summary: In this study, the addition of GNPs to MnTe compound successfully increased its fracture toughness, suppressed low-temperature ferromagnetic impurities, and had minimal impact on thermoelectric properties.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Engineering, Manufacturing
Alireza Dareh Baghi, Shahrooz Nafisi, Reza Hashemi, Heike Ebendorff-Heidepriem, Reza Ghomashchi
Summary: The study found that vertically built parts are prone to premature fracture in their truly as-built condition, while horizontally fabricated parts perform similarly to post-treated samples. Additionally, the analysis of the tensile test results showed that the fracture stress of truly as-built vertical parts is below the yield stress of horizontal parts, at approximately 38% of the Ultimate Tensile Strength.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Chemistry, Multidisciplinary
Kwang Hyun Park, Jun Yong Yang, Sunggyeong Jung, Byoung Min Ko, Gian Song, Soon-Jik Hong, Nam Chul Kim, Dongju Lee, Sung Ho Song
Summary: In this study, the bio-imaging characteristics of water-soluble MoS2 quantum dots were investigated. It was found that the synthesized metallic MoS2 quantum dots exhibited bright luminescence and low toxicity, making them promising for high-performance bio-imaging probes.
Article
Metallurgy & Metallurgical Engineering
Peyala Dharmaiah, C. H. Lee, B. Madavali, Soon-Jik Hong
ARCHIVES OF METALLURGY AND MATERIALS
(2017)
Article
Metallurgy & Metallurgical Engineering
Hyo-Seob Kim, Fikret Yilmaz, Peyala Dharmaiah, Dong-Jin Lee, Tae-Haeng Lee, Soon-Jik Hong
ARCHIVES OF METALLURGY AND MATERIALS
(2017)
Article
Metallurgy & Metallurgical Engineering
Chan-Mi Kim, Peyala Dharmaiah, Hyo-Seob Kim, Jar-Myung Koo, Jae-Sik Yoon, Hyun-Seon Hong, Soon-Jik Hong
ARCHIVES OF METALLURGY AND MATERIALS
(2017)
Article
Engineering, Chemical
Ri Zhang, Shasha Zhang, Mengyan Ding
Summary: A thin liquid film method is proposed to evaluate sand erosion in annular flow. This method considers the direct interaction between the liquid film and gas core, as well as the entrainment and deposition of droplets. The erosion rate is calculated by considering the effects of liquid entrainment and particle velocity decay. The method is fully verified by comparing with experimental data.
Article
Engineering, Chemical
Yu Suo, Xianheng Su, Wenyuan He, Xiaofei Fu, Zhejun Pan
Summary: This research investigates the mechanical properties of sandstone-shale composite through orthogonal experimental method and discrete element simulation. The results show that different lithologies and thickness ratios can affect the strength and fracture mode of the composite rock samples.
Article
Engineering, Chemical
Maurizio Troiano, Andrea El Hassanin, Roberto Solimene, Alessia Teresa Silvestri, Fabrizio Scala, Antonino Squillace, Piero Salatino
Summary: This study investigates the potential of Fluidized Bed Finishing (FBF) for square flat AlSi10Mg specimens manufactured via Laser-Powder Bed Fusion (L-PBF) additive manufacturing technology. The results show that good finishing can be achieved using rotation-assisted tests, with a maximum reduction of surface roughness by 67%. Steel particles are found to be the most effective bed material.
Review
Engineering, Chemical
Ningbo Song, Wanzhong Yin, Jin Yao
Summary: Seawater's dissolved salts and minerals have various effects on the flotation process, including influencing the characteristics and behavior of flotation factors, as well as affecting the surface of sulfide minerals. In most cases, seawater has adverse effects on the flotation of sulfide minerals, but these effects can be mitigated by adjusting the reagents.
Article
Engineering, Chemical
Kaiqiao Wu, Shuxian Jiang, Victor Francia, Marc-Olivier Coppens
Summary: In rectangular and cylindrical annular fluidized beds, pulsating gas flow can create regular bubble patterns, overcoming challenges seen in conventional units. This study provides new opportunities for modularization of fluidized bed operations.
Article
Engineering, Chemical
Shuo Li, Huili Zhang, Jan Baeyens, Miao Yang, Zehao Li, Yimin Deng
Summary: The paper assesses the behavior of cohesive Geldart C-type particles when fluidized by air with the aid of vibration. It determines that mechanical vibration is a simple and effective method to improve the fluidity of cohesive particles during fluidization.
Article
Engineering, Chemical
Zhenfei Feng, Qingyuan Zhang, Shanpan Liang, Zhenzhou Li, Fangwen Guo, Jinxin Zhang, Ding Yuan
Summary: A new micro/mini-channel heat sink (MCHS) with a combined structure of longitudinal and transverse vortex generators is designed, using Al2O3 nanofluid as the working medium. The study explores the effects of transverse vortex generator shape and longitudinal vortex generator angle on the hydraulic and thermal characteristics, comprehensive performance, entropy generation, and exergy efficiency. The results show that the triangular transverse vortex generator improves the comprehensive performance and exergy efficiency. Combined with the longitudinal vortex generator, the MCHS achieves the best comprehensive performance, entropy generation, and exergy efficiency when the Reynolds number is 742.
Article
Engineering, Chemical
Kostas Giannis, Christoph Thon, Guoqing Yang, Arno Kwade, Carsten Schilde
Summary: This study presents a 3D convolutional neural network (3D-CNN) methodology for generating realistic 3D models of particles. The method trains on 2D projections of particle images to predict their 3D shapes, and evaluates the accuracy of the predictions using Fourier shape descriptors (FSDs). This methodology has wide applications in particle shape analysis.
Article
Engineering, Chemical
Zheng-qing Zhou, Lu-jia Chai, Yu-long Zhang, Ya-bin Wang, Ze-chen Du, Tian-yi Wang, Yu-zhe Liu
Summary: The dynamic oxidation and shell-breaking processes of aluminum nanoparticles (ANPs) during heating were studied using in situ transmission electron microscopy. The results revealed that the changes in shell thickness can be divided into three stages, and the active aluminum content of ANP decreased before shell-breaking.
Article
Engineering, Chemical
Fulei Chen, Huaqing Ma, Zihan Liu, Lianyong Zhou, Yongzhi Zhao
Summary: A particle breakage model based on the particle replacement scheme, using the polyhedral model to describe particles, is proposed in this work to accurately describe the breakage of a large number of particles. Additionally, a fast-cutting algorithm is proposed to reproduce the size distribution of progeny particles determined by the breakage model. The validation and simulation results show satisfactory accuracy, efficiency, and stability of the algorithm.
Review
Engineering, Chemical
Matteo Errigo, Christopher Windows-Yule, Massimiliano Materazzi, Dominik Werner, Paola Lettieri
Summary: Gas-solid fluidized-bed systems have advantages in terms of chemical reaction efficiency and temperature control, making them widely used in industrial applications. However, the design, scale-up, and optimization of these complex units are limited by the lack of deep physical understanding. Non-invasive and non-intrusive diagnostic techniques provide a way for researchers to study these systems without affecting the flow field or directly contacting the medium under study.
Article
Engineering, Chemical
Saeed Fateh, Mohammad Behshad Shafii, Mohammad Najafi, Cyrus Aghanajafi
Summary: Applying a magnetic field to ferrofluids alters their flow characteristics and enhances heat transfer. Through visualization and quantitative investigation, it is found that the magnetic field influences the flow patterns and velocity profiles, improving fluid mixing and vorticity magnitude.
Article
Engineering, Chemical
Lei Gao, Bingbing Wei, Xiaochuan Hu, Zaifeng Yao, Yiwen Fang, Xuejian Gao
Summary: In this study, a numerical model of sand triaxial test was established using discrete element software PFC3D, and an indoor triaxial test was conducted to calibrate the numerical model. The influence of microscopic parameters on the macroscopic mechanical response of sand was analyzed. The results showed that the friction coefficient had the greatest impact on the peak strength and residual strength of the sand's stress-strain curve, and it was positively correlated. The normal tangential stiffness ratio was negatively correlated, while the porosity and boundary flexibility stiffness had minimal influence on it.
Article
Engineering, Chemical
Xuan Liu, Jie Gong, Kai Jiang, Xiaojuan Lai, Yu Tian, Kang Zhang
Summary: This study aimed to improve the performance of lignite coal water slurries (CWSs) by synthesizing a series of three-arm amphiphilic block copolymers. By controlling the relative molecular weight, hydrophilic/hydrophobic ratio, and ionic group content, the apparent viscosity of CWSs was significantly reduced and the static stability was improved. Thermogravimetric testing and XPS analysis were conducted to reveal the mechanism behind the improved performance.
Article
Engineering, Chemical
Lanka Dinushke Weerasiri, Daniel Fabijanic, Subrat Das
Summary: Fluidization at low pressure offers significant benefits for the fine chemical industry. This study investigates the behavior of bubbles and bed expansion under low pressure conditions. It is found that lower pressure leads to larger bubbles, increased bubble quantity, and higher aspect ratio. The predictability is affected by the inhomogeneous fluidization, but low pressure fluidization can generate similar bubble sizes with lower fluidizing mass compared to atmospheric pressure.