Results 41 to 50 of about 2,345 (276)

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

open access: yesAdvanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li   +5 more
wiley   +1 more source

Precipitation kinetics of niobium carbide (NbC) during homogenization heat treatment of additively manufactured inconel 718 superalloy

open access: yesJournal of Materials Research and Technology, 2023
High cooling rate of the laser powder bed fusion (L-PBF) additive manufacturing can suppress the formation of niobium carbide (NbC) phase in the fabricated Inconel 718 nickel-based superalloy parts.
Sajad Ghaemifar, Hamed Mirzadeh
doaj   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

open access: yesAdvanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir   +5 more
wiley   +1 more source

Niobium carbide – Nickel-niobium alloy composites from a nickel coated powder: Microstructural development during sintering

open access: yesOpen Ceramics, 2021
The sintering of a 14 ​wt% nickel nano-dot coated NbC powder was investigated using dilatometry in combination with XRD, ToF-ERDA, PIXE, SEM-EDS/EBSD/TKD, and TEM-HAADF/EDS/EELS for analysis of samples heated to 1375, 1405 and 1500 ​°C, with a 30 ​min ...
Sarmad Naim Katea   +5 more
doaj   +1 more source

Wear and corrosion resistance of niobium–chromium carbide coatings on AISI D2 produced through TRD

open access: yes, 2014
Niobium carbide, chromium carbide and niobium–chromium carbide coatings were deposited using the thermo-reactive diffusion (TRD) deposition technique on AISI D2 steel substrates, and their wear and corrosion resistance was studied.
Castillejo, F.E.   +3 more
core   +1 more source

PREPARATION AND STUDY OF THE PROPERTIES OF NANOCRYSTALLINE NIOBIUM CARBIDE [PDF]

open access: yes, 2021
Nanocrystalline niobium carbide powders of various sizes were obtained by high-energy milling. Carrier gas hot extraction method was applied for the determination of oxygen in nanopowders.
Danilov, D. A.   +5 more
core  

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal   +4 more
wiley   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca   +9 more
wiley   +1 more source

Dry turning with niobium carbide based tools

open access: yes, 2018
Niobium carbide (NbC) has attracted recently some attention as a substitute for tungsten carbide in machining. In the present work it was shown that the metallurgical and mechanical aspects favoring long tool lifes of ...
Woydt, Mathias
core   +1 more source

Near-Infrared Spatial Self-Phase Modulation in Ultrathin Niobium Carbide Nanosheets

open access: yesFrontiers in Physics, 2021
Spatial self-phase modulation (SSPM) as a purely coherent non-linear optical effect (also known as Kerr effect) can support strong broadband phase modulation, which is essential for all-optical applications.
Si Xiao   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy