Results 51 to 60 of about 29,052 (189)

The effect of quenching and defects size on the HCF behaviour of Boron steel [PDF]

open access: yes, 2014
This work investigates the effect of natural and artificial surface defects and quenching on the fatigue strength of a Boron steel (22MnB5). A vast experimental campaign has been undertaken to study the high cycle fatigue behaviour and more specifically ...
ABRIVARD, Benjamin   +4 more
core   +6 more sources

Multiscale Structuring of Hydroxyapatite via Two‐Photon Lithography of Nanocomposites

open access: yesAdvanced Functional Materials, EarlyView.
Hydroxyapatite scaffolds are of great interest in bone tissue engineering applications, ranging from 3D cell culture to regenerative medicine. Using two‐photon lithography of a transparent nanocomposite, hydroxyapatite microstructures with features ranging from submicron to centimeter‐scale are fabricated. This allows to mimic the natural bone geometry,
Leonhard Hambitzer   +6 more
wiley   +1 more source

Relationship Between Fracture Fractal and Mechanical Properties of 5083 Aluminum Alloy Sheet Prepared by Alternate Ring-Groove Pressing and Torsion

open access: yesMetals
In this study, the tensile fracture morphology of a 5083 aluminum alloy sheet prepared by alternate ring-groove pressing torsion and torsional flattening at room temperature (ARPT-TF-R) under different numbers of torsional flattening passes was analyzed.
Chunhui Zhang   +5 more
doaj   +1 more source

Thermal exchange effects on steel thixoforming processes [PDF]

open access: yes, 2010
Steel thixoforging is an innovative semi-solid forming process. It allows the manufacturing of complex parts and minimises the forming load. This work aims to identify and characterise the main feature zones of a thixoforging part.
BECKER, Eric   +2 more
core   +6 more sources

Toughening β‐Ga2O3 via Mechanically Seeded Dislocations

open access: yesAdvanced Functional Materials, EarlyView.
β‐Ga2O3 is promising for next‐generation semiconductors but its brittleness limits flexible and high‐precision applications. Here, mechanically seeded dislocations introduced by surface deformation improved damage tolerance in (001) β‐Ga2O3. Nanoindentation and characterization show dislocations suppress cleavage cracks by enabling stable plastic ...
Zanlin Cheng   +5 more
wiley   +1 more source

Effects of friction stir processing parameters on the wear resistance and mechanical properties of fabricated metal matrix nanocomposites (MMNCs) surface

open access: yesJournal of Materials Research and Technology, 2020
In this work, AA 2024 wrought aluminium alloy was reinforced with Al2O3 nanoparticles to fabricate surface metal matrix nanocomposites (MMNCs) via friction stir processing (FSP).
Waheed S. AbuShanab, Essam B. Moustafa
doaj   +1 more source

Ceramic Particle‐Reinforced Medium‐Entropy Alloys With Outstanding Mechanical Properties Prepared by Novel Micro‐LPBF

open access: yesAdvanced Functional Materials, EarlyView.
An innovative medium entropy alloy (MEA) composite material was fabricated via micro laser powder bed fusion (μ‐LPBF) with appropriate nano‐ceramic particles doping and exhibited markedly improved overall performance, including synergistically enhanced strength and ductility, increased hardness and compressive strength, improved wear resistance and ...
Zhonglin Shen, Mingwang Fu
wiley   +1 more source

Effects of low-power laser hardening on the mechanical and metallurgical properties of biocompatible SAE 420 steel

open access: yesJournal of Materials Research and Technology
The present experimental work is carried out on SAE 420 steel to optimize process parameters of low-power laser hardening to improve surface micro-hardness and wear resistance for dry sliding for bio-medical applications.
Santoshkumar V. Wagh   +7 more
doaj   +1 more source

Surface Characteristics Improvement of AZ31B Magnesium by Surface Compositing with Carbon Nano-tubes through Friction Stir Processing [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2015
In this research, the compositing of the surface of AZ31B magnesium alloy with CNT was studied by FSP. The parameters under study were rotational speed (500-1500 rpm), transverse speed (12-44 mm/min), number of passes (1-4), and CNT weight fraction (0-2%)
M. Soltani, M. Shamanian, B. Niroumand
doaj  

An in situ Zn–5Mg2Ge composite processed by ultrasonication for biodegradable orthopedic implant applications

open access: yesJournal of Materials Research and Technology, 2023
Zinc (Zn)-based composites have been received adequate attention lately in the biomedical field as degradable biomaterials owing to their simple preparation process, inherent biodegradability, intrinsic biological activity, and good biocompatibility ...
Xinghai Wu   +9 more
doaj   +1 more source

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