Results 61 to 70 of about 4,823 (228)

Enhancing Welding Productivity and Mitigation of Distortion in Dissimilar Welding of Ferritic-Martensitic Steel and Austenitic Stainless Steel Using Robotic A-TIG Welding Process

Journal of Manufacturing and Materials Processing
The P91 martensitic steel and 304L austenitic stainless steels are two mainly used structural steels in power plants. The major problem in conventional multipass tungsten inert gas (TIG) welding of P91/304L steel is high heat input and joint distortion ...
Tushar Sonar, Mikhail Ivanov, Igor Shcherbakov, Evgeny Trofimov, Emiliya Khasanova, Muralimohan Cheepu, Kun Liu   +6 more
doaj   +1 more source

Evaluation of Welded Joints in P91 Steel under Different Heat-Treatment Conditions

Metals, 2020
P91 steel has been of interest to many researchers over the past two decades. This interest is because this steel has very interesting characteristics for application in power plants, where it is common to have pipes that need to support steam at ...
Francisco José Gomes Silva, António Pedro Pinho, António Bastos Pereira, Olga Coutinho Paiva   +3 more
doaj   +1 more source

A Meta‐Analysis of the Effects of Early Life Stress on the Prefrontal Cortex Transcriptome Reveals Long‐Term Downregulation of Myelin‐Related Gene Expression

Brain and Behavior, Volume 15, Issue 6, June 2025.
To elucidate the long‐term effects of early life stress (ELS) on the prefrontal cortex (PFC), we conducted a meta‐analysis of five publicly available transcriptional profiling datasets from adult rodents that had experienced ELS. We observed consistent downregulation of myelin‐related genes following ELS and upregulation related to major depressive ...
Toni Q. Duan, Megan H. Hagenauer, Elizabeth I. Flandreau, Anne Bader, Duy Manh Nguyen, Pamela M. Maras, Randriely Merscher S. De Lima, Trevonn Gyles, Christabel Mclain, Michael J. Meaney, Eric J. Nestler, Stanley J. Watson Jr., Huda Akil   +12 more
wiley   +1 more source

The present SP tests for determining the transition temperature TSP on "U" notch disc specimens [PDF]

, 2017
The principal difference between the small punch (SP) testing technique and standardized impact testing lies in the fact that the SP tests carried out in accordance with CWA 15627 Small Punch Test Method for Metallic Materials use disc-shaped test ...
Dorazil, Ondřej, Hurst, Roger, Matocha, Karel   +2 more
core   +1 more source

Micromechanical finite element modelling of thermo-mechanical fatigue for P91 steels [PDF]

International Journal of Fatigue, 2016
In this paper, the cyclic plasticity and fatigue crack initiation behaviour of a tempered martensite ferritic steel under thermo-mechanical fatigue conditions is examined by means of micromechanical finite element modelling. The crystal plasticity-based model explicitly reflects the microstructure of the material, measured by electronic backscatter ...
Li, Dong-Feng, Barrett, Richard A., O’Donoghue, Padraic E., Hyde, Chris J., O’Dowd, Noel P., Leen, Sean B.   +5 more
openaire   +3 more sources

Material Challenges and Alloy Selection for Particle/s‐CO2 Heat Exchangers in Concentrated Solar Power Systems

Advanced Engineering Materials, Volume 27, Issue 10, May 2025.
Combining supercritical CO2 (s‐CO2) cycles with particle‐based heat transfer media holds great potential in concentrated solar power plants but poses enormous material challenges. The particle/s‐CO2 heat exchanger must withstand extreme conditions, including high temperatures, pressures, CO2 corrosion, and erosion.
Mathias Christian Galetz, Emma Marie Hamilton White, Michael Kerbstadt, Clara Schlereth, Xabier Montero, Daniel Benitez   +5 more
wiley   +1 more source

Influence de traitements thermo-mécaniques sur les performances en fluage et en fatigue d'aciers martensitiques à 9% Cr [PDF]

, 2010
National audienceLe développement des réacteurs nucléaires de génération IV et des réacteurs à fusion nucléaire requiert l'utilisation de matériaux possédant de bonnes propriétés mécaniques au-delà de 550 °C.
Caes, C., Fournier, Benjamin, Hollner, S., Le Pendu, J., Pineau, André, Tournié, Ivan   +5 more
core   +5 more sources

Creep Crack Growth Behavior of a P91 Steel Weld

Procedia Engineering, 2014
AbstractModified 9Cr-1Mo steel (P91) weld joints operating at elevated temperatures are well known to be prone to premature failure due to cracking in the heat affected zone because of the gradients in microstructure, popularly referred to as Type IV cracking.
Venugopal, S., Sasikala, G., Kumar, Yatindra   +2 more
openaire   +1 more source

Homotopy Perturbation Method for Investigating Population Dynamics in Oxygen‐Depleted Environments

Discrete Dynamics in Nature and Society, Volume 2025, Issue 1, 2025.
This research will seek to construct a theoretical model to study both the ultraviolet (UV) degradation of hydrogen sulfide (H2S) without oxygen and population dynamics in anoxic environments. Solving some of the issues in biogas energy usage, this paper is interested in modeling H2S photodegradation, simulation of parameters that influence degradation
V. Sreelatha Devi, Sathiyaraj Thambiayya, Gowri Senthil, K. Saranya, S. Priyan   +4 more
wiley   +1 more source

Cyclic hardening and softening of high-strength steels

Journal of Mechanical Engineering and Sciences
316L and P91 steels, commonly used for high-temperature applications in power plants, experience low-cycle fatigue. In this work, the cyclic stress-strain behaviour of 316L and P91 materials was analyzed. Experimental data from the material's hysteresis
Norhaida Ab Razak, Nasrul Azuan Alang, Nurizzatul Atikha Rahmat   +2 more
doaj   +1 more source