Results 31 to 40 of about 1,368 (215)

Study of the creep cavitation behavior of P91 steel under different stress states and its effect on high-temperature creep properties

Journal of Materials Research and Technology, 2022
In this study, circumferential U-notches of different depths were machined on a plain cylindrical creep specimen to simulate different stress states during steam pipe operation.
Ke Han, Haimin Ding, Xiaoliang Fan, Wenbin Li, Yadong Lv, Yanting Feng   +5 more
doaj   +1 more source

Effect of B and N Content and Austenitization Temperature on the Tensile and Impact Properties of Modified 9Cr-1Mo Steels

Metals, 2023
The present study investigates the relative effect of B and N concentrations and the austenitization temperature on the microstructure and mechanical properties (tensile and Charpy impact) of modified 9Cr-1Mo (P91) steels.
Ravindran Rejeesh, Rakesh Kumar Barik, Rahul Mitra, Andrii Kostryzhev, Chitta R. Das, Shaju K. Albert, Debalay Chakrabarti   +6 more
doaj   +1 more source

The influence of coupling effect between stress and high temperature on the degradation of microstructure and hardness in P91 steel

Materials & Design
Interrupted aging and creep tests were performed in the condition of 650 °C/70 MPa for P91 steel. The mechanisms of hardness and microstructure evolution during aging and creep were studied through hardness test, SEM/EBSD and TEM/EDS.
Xiaoxiang Sun, Xue Wang
doaj   +1 more source

The Interpretation of Experimental Observation Data for the Development of Mechanisms based Creep Damage Constitutive Equations for High Chromium Steel

, 2015
It is very important to design a safe factor or estimating the remain lifetime for electric power plant components of steam pipes which mostly manufacture by high chromium steels and work at high temperature and low stress level.
Yang, Xin, Xu, Qiang, Xin Yang, Zhongyu Lu, Qiang Xu, Lu, Zhongyu   +5 more
core   +1 more source

Comparison of measured and modelled residual stresses in a welded P91 steel pipe undergoing post weld heat treatment

, 2020
The process of fusion arc welding of steel pipes in power generation plants induces residual stresses which may be detrimental to the integrity and endurance of plant pipelines.
Smith, David J., Hyde, Thomas H., Becker, Adib A., Simandjuntak, Sarinova, Wen, Wu, Flewitt, Peter E.J., Pavier, Martyn J., Sun, Wei, Yaghi, A. H., Simanjuntak, Sarinova, Yaghi, Anas H., Pavier, Martyn, Smith, David, Flewitt, Peter EJ., Flewitt, Peter, Hilson, Gabrielle, Hyde, T. H.   +16 more
core   +1 more source

Characterization of As-Welded Microstructure in a P91 Steel

Welding Journal
The microstructure of the heat affected zone (HAZ) and fusion zone (FZ) in the as-welded condition of a single-pass weld performed by the flux-cored arc welding (FCAW) process was studied in a P91 steel using microhardness measurements, field-emission scanning electron microscopy, transmission electron microscopy, and x-ray diffraction.
ANA LUCÍA MARZOCCA, CLAUDIO ARIEL DANÓN, MARÍA INÉS LUPPO, FLAVIO SOLDERA, MÓNICA ZALAZAR   +4 more
openaire   +1 more source

Anchors or relational risks? Educator and psychologist narratives of attachment in child–robot relationships

British Journal of Educational Psychology, EarlyView.
Abstract Background As AI‐enabled social robots become more common in schools, children may form strong emotional bonds with them despite robots not being caregivers and lacking the capacities for “true” attachment. Given limited understanding of potential risks and safeguards, professional perspectives are needed to inform responsible design and ...
Dimitris Pnevmatikos, Panagiota Christodoulou   +1 more
wiley   +1 more source

Numerical Research of Fracture Toughness of Aged Ferritic-Martensitic Steel

Metals, 2020
Generally, material properties such as the modulus of elasticity, yield strength or fracture toughness are determined by conducting an experiment. Sometimes experimental determination cannot be done due to specific experimental conditions, lack of ...
Remigijus Janulionis, Gintautas Dundulis, Albertas Grybėnas   +2 more
doaj   +1 more source

A comparative study of two nuclear steel grades welded joints [PDF]

Archives of Metallurgy and Materials, 2020
In present work, two nuclear grade steel (P91, P92) are joined using the arc welding process. The welded joints were subjected to the heat treatment in order to restore the mechanical properties and overcome the heterogeneity across the joints.
Sachin Sirohi, Chandan Pandey, Amit Goyal   +2 more
doaj   +1 more source

Atom Probe Tomography‐Based Analysis of Residual Trace Elements in Advanced Metallic Materials

Rare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Residual trace elements inherited from raw materials strongly influence the mechanical and environmental performance of advanced metallic alloys and recycling materials due to preferable boundary/interface segregation and resultant embrittlement effects, yet their parts per million level concentrations pose significant challenges to ...
Congcong Li, Mingxuan Sun, Yi Song, Huihui Zhu, Wenyu Yang, Yiming Tang, Xiaoyuan Yuan, Bo Peng, Suihe Jiang, Xiangyang Peng, Guang Li, Guosheng Zhang, Xiongjun Liu, Hui Wang, Xiaobin Zhang, Yuan Wu, Xinping Mao, Zhaoping Lu   +17 more
wiley   +1 more source