Results 11 to 20 of about 10,227 (256)

Experimental Study of the Microhardness and Microstructure of a Copper Specimen Using the Taylor Impact Test

Metals, 2022
One commonly used method for characterizing the dynamic characteristics of materials is the Taylor impact test. This method measures the dynamic yield strength of cylindrical specimens and determines material model constants required for the numerical ...
Sergey A. Zelepugin, Nadezhda V. Pakhnutova, Olga A. Shkoda, Evgenii N. Boyangin   +3 more
doaj   +2 more sources

Dimensional Changes, Microstructure, Microhardness Distributions And Corrosion Properties Of Iron And Iron-Manganese Sintered Materials

Archives of Metallurgy and Materials, 2015
AbstractIron samples and Fe-Mn alloys with Mn content of 25 wt.% and 30 wt.% were prepared by blending, compressing and sintering with the aim to study their dimensional changes, microstructure, microhardness distribution and primarily the electrochemical corrosion behaviour in a simulated body environment.The light microscopy (LM), scanning electron ...
Kupková M., Hrubovčáková M., Zeleňák A., Sułowski M., Ciaś A., Oriňáková R., Turoňová A. Morovská, Žáková K., Kupka M.   +8 more
openaire   +3 more sources

Effect of shade and thickness on the microhardness of resin-based composite specimens at different points considering curing light beam’s inhomogeneity

BMC Oral Health
Background Recent studies have reported the inhomogeneity in the light emitted by dental light-curing units (LCUs). It is essential to understand how this uneven light distribution affects the physical properties of resin-based composites (RBCs) at ...
Lan Wang, Hyemin Ku, Dohyun Kim, Sung-Ho Park   +3 more
doaj   +2 more sources

Effects of Laser Scanning Speed on Microstructure, Microhardness, and Corrosion Behavior of Laser Cladding Ni45 Coatings

Journal of Chemistry, 2020
The effects of laser scanning speed on the microstructure, microhardness, and corrosion behavior of Ni45 coatings were investigated by using optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), microhardness, and ...
Yanxin Qiao, Jie Huang, Ding Huang, Jian Chen, Wen Liu, Zhengbin Wang, Zheng Zhibin   +6 more
doaj   +2 more sources

Microhardness distribution and finite element method analysis of Al 5452 alloy processed by unconstrained high pressure torsion

Journal of Materials Research and Technology, 2018
High pressure torsion (HPT) is one of the successful and efficient methods of severe plastic deformation (SPD). In this research, disk-shaped specimens of aluminum alloy were exposed to high pressure and torsion, which are the key factors of HPT. Simultaneously applying high pressure and torsion causes shear strain and thus enhancement of mechanical ...
Sina Ghaemi Khiavi, Esmaeil Emadoddin
openaire   +3 more sources

Modeling and Control of Cutter Vibration in the Presence of Random Distribution of Microhardness of Workpiece and Nonlinear Cutting Forces in Lathe Process [PDF]

ISRN Mechanical Engineering, 2011
This work presents a comprehensive approach to the control of tool's position, in the presence of machine tool structure vibration, nonlinear cutting force, and random tool vibration due to random distribution of microhardness of workpiece material. The controller is combination of Proportional and linear quadratic gaussian- (P-LQG-) type constructed ...
A. H. El-Sinawi
openaire   +2 more sources

Microhardness and EBSD microstructure mapping in partially-pressed al and cu through 90º ECAP die

Materials Research, 2013
Equal-channel angular pressing (ECAP) is widely recognized as an effective method for processing ultrafine-grained and even nanostructured materials.
Alexander P. Zhilyaev, Terence G. Langdon   +1 more
doaj   +2 more sources

Grain refinement, microhardness distribution, strain hardening behaviour and mechanical proprieties of RD-ECAPed AA 1050 [PDF]

, 2023
This study aims to investigate the evolution of mechanical and microstructural characteristics of the 1050 aluminium alloy processed by Rotary Die Equal Channel Angular Pressing (RD-ECAP).
A. Halimi, Z.A. Louchene, I.E. Chettah, Louchene, Z. A., Halimi, A., Hemmouche, L., L. Hemmouche, Chettah, I. E.   +7 more
core   +1 more source

Effect of hydrothermal aging on the microhardness of high- and low-viscosity conventional and additively manufactured polymers. [PDF]

, 2022
STATEMENT OF PROBLEM Studies on the microhardness of novel additively manufactured polymers compared with well-established low- and high-viscosity composite resins with regard to chemical composition are lacking.
Abou-Ayash, Samir, Kleverlaan, Cornelis J., Özcan, Mutlu, Kleverlaan, Cornelis J.; id_orcid, Kleverlaan, Cornelis J, Feilzer, Albert J, Feilzer, Albert J., Al-Haj Husain, Nadin   +7 more
core   +1 more source

Synthesis, Microstructural Characterization and Microhardness of AlCoNi-SiC Composite Prepared by Mechanical Alloying [PDF]

Materials Research, 2017
Equiatomic AlCoNi alloy matrix were reinforced by the dispersion of SiC nanoparticles (SiCnp) using the mechanical alloying process. The metallic powders were milled for 10, 20 and 30 h and sintered at 1200 0C under vacuum.
Francisco J Baldenebro-López, Hector Camacho-Montes, Audel Santos-Beltrán, M. Cristina Maldonado-Orozco, Cynthia D Gómez-Esparza, Roberto Martínez-Sánchez   +5 more
doaj   +1 more source