Results 21 to 30 of about 904,230 (261)

Structure of the S304H Steel after 20,000 Hours of Ageing [PDF]

open access: yesArchives of Metallurgy and Materials, 2022
The S304H steel is used in the construction of pressure components of boilers with supercritical operating parameters. The paper presents the results of the research on the microstructure after ageing for 20,000 hours at 650 and 700°C. The microstructure
R. Wersta   +4 more
doaj   +1 more source

Effect of MAG welding transfer mode on sigma phase precipitation and corrosion performance of 316L stainless steel multi-pass welds

open access: yesJournal of Materials Research and Technology, 2020
The effect of multi-pass MAG welding transfer modes on the sigma phase precipitation and corrosion performance of AISI 316L thick plate were investigated.
L.H. Guilherme   +4 more
doaj   +1 more source

An insight into oversaturated deformation-induced sigma precipitation in Super304H austenitic stainless steel

open access: yesMaterials & Design, 2019
A new mechanism of the deformation-promoted precipitation of the sigma phase during aging at 650 °C in nanocrystallized Super304H austenitic stainless steel was proposed for its extremely early nucleation and subsequently fast growth.
Qingwen Zhou, Jiangwen Liu, Yan Gao
doaj   +1 more source

DOZN™3.0: A quantitative Green Chemistry evaluator for sustainable chemistry

open access: yesSustainable Chemistry for Climate Action
Quantitative evaluation of green chemistry is essential for designing processes that align with the Twelve Principles of Green Chemistry. This article discusses the DOZN™3.0 tool, developed by Merck which facilitates the assessment of resource ...
PANKAJ SHARMA, ETTIGOUNDER PONNUSAMY
doaj   +1 more source

Thermodynamic Simulation of Equilibrium Solidification and Precipitation of CW12MW and CW6MC Cast Nickel-based Alloys

open access: yesTeshugang, 2023
Thermo-Calc (TC)thermodynamic calculation software and TCNI10 professional nickel-based alloy database were used to calculate and analyze the phase transition paths during the equilibrium solidification and cooling process of CW12MW and CW6MC cast nickel-
Su Xuehu
doaj  

EFFECT OF SIGMA PHASE PRECIPITATION ON MECHANICAL BEHAVIOR AND PITTING CORROSION OF DUPLEX STAINLESS STEEL

open access: yesActa Metallurgica Slovaca, 2019
The main purpose of this work is to investigate the pitting corrosion behavior of sigmatized duplex stainless steel (DSS) exposed to two different chloride environments: simulated seawater solution and produced water solution.
Talha Berguiga, Zakaria Boumerzoug
doaj   +1 more source

Holographic p-wave superconductivity from higher derivative theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We construct a holographic SU(2) p-wave superconductor model with Weyl corrections. The high derivative (HD) terms do not seem to spoil the generation of the p-wave superconducting phase. We mainly study the properties of AC conductivity, which is absent
Yan Liu   +4 more
doaj   +1 more source

THE BROKEN PHASE OF THE TOPOLOGICAL σ MODEL [PDF]

open access: yesInternational Journal of Modern Physics A, 1995
The topological σ model with the semi-infinite cigar-like target space (black hole geometry) is considered. It is shown to possess unsuppressed instantons. The noncompactness of the moduli space of these instantons is responsible for an unusual physics.
openaire   +3 more sources

Investigations into the Surface Strain/Stress State in a Single-Crystal Superalloy via XRD Characterization

open access: yesMetals, 2018
The present study was aimed at determining the surface strain/stress state in an Ni-based single-crystal (SC) superalloy that was subjected to two different cooling rates from solid solution temperature through using the X-ray diffraction (XRD) method ...
Haodong Duan   +6 more
doaj   +1 more source

Influence of the Solution-Treatment Temperature and Short Aging Times on The Electrochemical Corrosion Behaviour of Uns S32520 Super Duplex Stainless Steel [PDF]

open access: yesMaterials Research, 2019
Sigma phase leads to deterioration of corrosion resistance of super duplex stainless steels (SDSS) and its volume fraction increases as the time which the materials is exposed in determined temperature increases.
Livio de Carvalho Valeriano   +4 more
doaj   +1 more source

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