Results 41 to 50 of about 276,966 (307)

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Production and Properties of High Entropy Carbide Based Hardmetals

Metals, 2021
Dense, high-entropy carbide cobalt-bonded hardmetals with two different compositions, namely (Hf-Ta-Ti-Nb-V)C-19.2 vol% Co and (Ta-Ti-Nb-V-W)C-19.2 vol% Co, were successfully manufactured by gas pressure sintering (SinterHIP) at 1400 °C and 100 bar Ar ...
Johannes Pötschke, Manisha Dahal, Anne Vornberger, Mathias Herrmann, Alexander Michaelis   +4 more
doaj   +1 more source

Nanocharacterisation of precipitates in austenite high manganese steels with advanced techniques: HRSTEM and DualEELS mapping [PDF]

, 2014
To achieve optimal mechanical properties in high manganese steels, the precipitation of nanoprecipitates of vanadium and niobium carbides is under investigation.
A J Craven, D McGrouther, G Paul, I MacLaren, J Bobynko, Sil'man GI   +5 more
core   +1 more source

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

Experimental research on multi-structural parameter optimization of rhombic tooth endmill based on DOE in CFRP milling

Journal of Materials Research and Technology
The rhombic tooth endmill, with its complex structure, is a frequently utilized cutting tool when milling carbon fiber reinforced polymer (CFRP). It offers the advantages of a small cutting force and good machining surface quality.
Xiaochen Zuo, Junxue Ren, Tiejun Song, Tao Zeng, Mengliu Zhang, Hexuan Liu   +5 more
doaj   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Design and magnetic properties of gradient Fe(Si)/Fe structure soft magnetic composites

Journal of Materials Research and Technology
Soft magnetic composites (SMCs) play a key role in the electric energy conversion, developing higher magnetization and lower loss SMCs is a strategy for modern power system and electric devices.
Xiaoyu Wang, Ziru Zheng, Kun Peng
doaj   +1 more source

RESEARCH ON SiC FOR INTERFACE QUALITY [PDF]

Fiabilitate şi Durabilitate, 2013
A new thermal oxidation process of growing a dry oxide then following with a wet re-oxidationanneal produces an oxide with the dielectric strength of a dry oxide and the high-quality interface of a wetoxide. MIS field effect transistors (MISFET’s) with a
Cristiana VOICAN, Constantin STANESCU
doaj  

Synthesis of Metastable Ternary Pd-W and Pd-Mo Transition Metal Carbide Nanomaterials

Molecules, 2021
Research and catalytic testing of platinum group transition metal carbides have been extremely limited due to a lack of reliable, simple synthetic approaches. Powder samples have been reported to phase separately above 1%, and only thin-film samples have
James M. Thode, Daniel P. Harris, Cheng Wan, Brian M. Leonard   +3 more
doaj   +1 more source

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source