Results 11 to 20 of about 1,731 (154)

Metalografía a color en aleaciones Al-Si comerciales. Optimización de las técnicas de caracterización microestructural mediante microscopía óptica de reflexión

open access: yesRevista de Metalurgia, 2010
La demanda de aleaciones con calidades optimizadas conlleva la mejora continua de estas calidades, lo que viene suscitando la necesidad de mejora y optimización permanentes de las técnicas de caracterización metalográfica.
B. Suárez-Peña   +2 more
doaj   +1 more source

Picosecond laser microvia drilling of ABF material using MHz burst mode

open access: yesMaterials Research Express, 2023
We report on a comprehensive study of laser percussion microvia drilling of Ajinomoto build-up film (ABF) material using an ultrashort pulsed laser in MHz burst mode.
Daniel Franz   +7 more
doaj   +1 more source

Sress-corrosion cracking under cathodic protection of low alloy steel joints with high frequency weld and arc weld

open access: yesФізика і хімія твердого тіла, 2022
According to the results of complex electrochemical, corrosion-mechanical and fractographic studies, the existence of three potential regions, in which the stress-corrosion cracking (SCC) of 17G1S (17G1S-U) steel in the NS4 model soil electrolyte occurs ...
L.I. Nyrkova   +5 more
doaj   +1 more source

Influence of Welding Parameters on the Weld Pool Dimensions and Shape in a TIG Configuration

open access: yesApplied Sciences, 2017
The weld pool shape created by the plasma arc interaction on a workpiece depends on many geometrical and physical parameters and on the operating conditions.
Marine Stadler   +2 more
doaj   +1 more source

Notch aspects of RSP steel microstructure

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2012
For a rather long time, basic research projects have been focused on examinations of mechanical properties for Rapid Solidification Powder (RSP) steels. These state-of-art steels are commonly known as “powdered steels“.
Michal Černý   +3 more
doaj   +1 more source

Microstructural Study of Welded and Repair Welded Dissimilar Creep-Resistant Steels Using Different Filler Materials

open access: yesEngineering Proceedings
This study examines initial and repair welds between creep-resistant steels, P22 and P91, using ER90S-B3 and ERNiCrMo-3 steel-based and nickel-based filler materials, respectively. TIG welding with and without PWHT was applied. Microstructural evaluation
Stavros Chionopoulos   +2 more
doaj   +1 more source

Metallographic Study and Repeatability Analysis of γ' Phase Precipitates in Cored, Thin-Walled Castings Made from IN713C Superalloy

open access: yesArchives of Metallurgy and Materials, 2017
The study describes the influence of a surface modification in cored, thin-walled castings of blades from IN-713C nickel superalloy on γ' phase precipitates. The blades were produced by using the investment casting process in the laboratory conditions as
Szczotok A., Pietraszek J., Radek N.
doaj   +1 more source

Colour Metallography of Cast Iron [PDF]

open access: yesChina Foundry, 2009
Cast iron, as a traditional metal material, has advantages of low total cost, good castability and machinability, good wear resistance and low notch sensitivity, and is still facing tough challenge in quality, property and variety of types etc.
Zhou Jiyang
doaj  

The Olokun head reconsidered

open access: yesAfrique Archéologie Arts, 2013
The opportunity was taken in 2010 to carry out a full scientific and technical examination of the brass head from Ife, popularly known as the Olokun head, first published in 1912 by Leo Frobenius, together with a selection of other Ife heads that came to
Paul T. Craddock   +6 more
doaj   +1 more source

Microstructure and Failure Processes of Reactor Pressure Vessel Austenitic Cladding

open access: yesMetals, 2021
This paper is dedicated to an experimental program focused on the evaluation of microstructure and failure mechanisms of WWER 440 type nuclear reactor pressure vessel cladding made from Sv 08Kh19N10G2B stainless steel.
Jan Štefan   +4 more
doaj   +1 more source

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