Results 11 to 20 of about 46,215 (264)

Effect of Silicon Carbide and Tungsten Carbide on Concrete Composite

Materials, 2022
Flexural strength of concrete is an important property, especially for pavements. Concrete with higher flexural strength has fewer cracking and durability issues. Researchers use different materials, including fibers, polymers, and admixtures, to increase the flexural strength of concrete.
Maria Idrees, Husnain Ahmad Chaudhary, Arslan Akbar, Abdeliazim Mustafa Mohamed, Dina Fathi   +4 more
openaire   +2 more sources

New insight into the relationship between the C-Cr ratio and carbides, mechanical property of cold working die steel

Materials Research Express, 2023
An new insight into the relationship between the C-Cr Ratio and carbides, mechanical property Cr Alloyed of cold working die Steel were investigated by optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive spectrometer (EDS ...
Chi Hongxiao, Di Yingnan, Zhang Nan, Gu Jinbo, Zhou Jian, Ma Dangshen   +5 more
doaj   +1 more source

Modeling of the phase-structural state in a hybrid multicomponent alloy with a high boron content

Фізика і хімія твердого тіла, 2022
The present work is focused on analyzing the thermodynamically equilibrium path of structure formation in a multi-component Fe-W-Mo-Cr-Ti-Mn-Si alloy of tribotechnical purpose, containing 0.72 wt. % C and 2.75 wt. % B is analyzed.
Yu.G. Chabak, М.А. Golinskyi, V.G. Efremenko, К. Shimizu, H. Halfa, V.І. Zurnadzhy, B.V. Efremenko, Т.М. Kovbasiuk   +7 more
doaj   +1 more source

Analysis of polytype stability in PVT grown silicon carbide single crystal using competitive lattice model Monte Carlo simulations

AIP Advances, 2014
Polytype stability is very important for high quality SiC single crystal growth. However, the growth conditions for the 4H, 6H and 15R polytypes are similar, and the mechanism of polytype stability is not clear. The kinetics aspects, such as surface-step
Hui-Jun Guo, Wei Huang, Xi Liu, Pan Gao, Shi-Yi Zhuo, Jun Xin, Cheng-Feng Yan, Yan-Qing Zheng, Jian-Hua Yang, Er-Wei Shi   +9 more
doaj   +1 more source

Influence of WC Particle Morphology on the Microstructure and Performance of Laser-Cladded Ni-Based WC Composite Coatings on 0Cr13Ni5Mo Steel

Lubricants
Ni-based WC composite coatings are widely used to protect hydraulic components, yet the role of WC particle morphology in binder-phase strengthening remains unclear.
Jiajun Li, Ruilin Zeng, Shequan Wang, Ninghua Long, Kongming Yan, Qun Wang, Chidambaram Seshadri Ramachandran   +6 more
doaj   +1 more source

Supported Molybdenum Carbide and Nitride Catalysts for Carbon Dioxide Hydrogenation

Frontiers in Chemistry, 2020
Catalysts based on molybdenum carbide or nitride nanoparticles (2–5 nm) supported on titania were prepared by wet impregnation followed by a thermal treatment under alkane (methane or ethane)/hydrogen or nitrogen/hydrogen mixture, respectively.
Marwa Abou Hamdan, Abdallah Nassereddine, Ruben Checa, Mohamad Jahjah, Catherine Pinel, Laurent Piccolo, Noémie Perret   +6 more
doaj   +1 more source

Effect of strain amplitude on the isothermal fatigue behavior of H13 hot work die steel

工程科学学报, 2021
Thermal fatigue cracking is the main failure mode of hot work die steel during die casting and hot forging. Thermal fatigue cracking accounts for a large proportion of mold failures and seriously affects the service life of the mold.
Zhen-qiang ZHU, Hui NING, Peng-peng ZUO, Xiao-chun WU   +3 more
doaj   +1 more source

A Potentially Repairable Composite Coating for Significantly Enhancing Wear and Corrosion Resistance of Magnesium Alloy

Lubricants
The AZ31 magnesium alloy is an attractive lightweight metallic material, but its low corrosion resistance and wear resistance significantly limit its widespread application in fields such as aerospace, the automotive industry, and mechanical engineering.
Yueyu Huang, Ruilin Zeng, Shequan Wang, Ninghua Long, Yingpeng Zhang, Qun Wang, Chidambaram Seshadri Ramachandran   +6 more
doaj   +1 more source

Effect of Tempering Time on Carbide Evolution and Mechanical Properties of a Nb-V-Ti Micro-Alloyed Steel

Metals, 2023
The evolution of the microstructure, the precipitation behavior, and the mechanical performances of Nb-V-Ti micro-alloyed steel prepared under different tempering time were studied using transmission electron microscopy (TEM), X-ray diffraction (XRD ...
Qian Zhao, Zhixia Qiao, Ji Dong
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source