Explanipedia

The role of pressure in carburisation: Crack dynamics in Type 316H austenitic stainless steel under CO2 environments Open

Mariia Zimina, Alexander Warren, Lawrence Coghlan, Peter Thomas, Marc Chevalier , et al. · 2025

A correlative approach to evaluating the links between local microstructural parameters and creep initiated cavities Open

Siqi He, Edward William Horton, Stacy Moore, E.C. Galliopoulou, Peter Thomas , et al. · 2024

The study and modelling of material degradation processes, such as the initiation and growth of creep cavities in high-temperature applications, require a correlative and comprehensive knowledge of the microstructure. However, individual m…

Using XeF2 FIB imaging to contrast and quantify precipitation in metal Open

Peter Thomas, Mariia Zimina, Lawrence Coghlan, Aidan Gunn, Siqi He , et al. · 2024

Correlative microscopy of creep cavitation in steels using image processing of SEM, FIB-XeF2 and EBSD Open

T. Martin, Siqi He, Eirini Gallioupolou, Peter Thomas, Edward Edward , et al. · 2024

Effect of grain boundary misorientation and carbide precipitation on damage initiation: A coupled crystal plasticity and phase field damage study Open

Michael Salvini, Nicolò Grilli, Eralp Demir, Siqi He, T. Martin , et al. · 2023

A coupled crystal plasticity phase field damage framework has been developed and applied to modelling damage initiation. A novel implementation of a grain misorientation angle dependent critical energy release rate has been used to determi…

A novel approach for evaluating creep damage and cavitation in copper bicrystals subject to constant load Open

Hao Shang, Elsiddig Elmukashfi, Jaroslav Čapek, Pavel Lejček, K Hallam , et al. · 2023

Creep in metal alloys is an important failure mode for high temperature and stress applications, but despite extensive study it is still not fully understood, particularly the early stage of creep cavity formation. This paper describes a n…

Creep cavitation evolution in polycrystalline copper under conditions of stress relaxation Open

Hao Shang, A. Fernández-Caballero, Elsiddig Elmukashfi, T. Martin, K Hallam , et al. · 2023

Creep in metals and alloys has been observed and studied extensively over the past century. Most studies are based on constant load or less frequently on constant stress conditions. Under certain stress regimes during the period of service…

Effect of Grain Boundary Misorientation and Carbide Precipitation on Damage Initiation: A Coupled Crystal Plasticity and Phase Field Study Open

Michael Salvini, Nicolò Grilli, Eralp Demir, Siqi He, T. Martin , et al. · 2023

Temperature dependence of electrical resistivity, deformation, and fracture of polygranular graphite with different amounts of porosity Open

C. Paraskevoulakos, B. Roebuck, K Hallam, P. E. J. Flewitt · 2022

New Correlative Microscopy Approaches to Understand the Microstructural Origins of Creep Cavitation in Austenitic Steels Open

T. Martin, Siqi He, Edward William Horton, Hao Shang, A. Fernández-Caballero , et al. · 2022

Journal Article New Correlative Microscopy Approaches to Understand the Microstructural Origins of Creep Cavitation in Austenitic Steels Get access Tomas Martin, Tomas Martin Interface Analysis Centre, H.H. Wills Physics Laboratory, Univer…

Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite Open

K Hallam, Ed Darnbrough, C. Paraskevoulakos, P.J. Heard, T.J. Marrow , et al. · 2021

Synthetic polygranular graphites of various grades and manufacturing routes are used in nuclear reactors for power generation, and may be used in potential fourth generation and other advanced reactor designs that will operate at higher te…

The effects of fusion reactor thermal transients on the microstructure of Eurofer-97 steel Open

David Kumar, John A. Hargreaves, A. Bharj, A. Scorror, L. M. Harding , et al. · 2021

Non‐negative assisted principal component analysis: A novel method of data analysis for raman spectroscopy Open

Astrid L. Blee, John C. C. Day, P. E. J. Flewitt, Alejandro Jeketo, D. Smith · 2021

A novel method for the analysis of multivariate Raman spectroscopy data is presented. The method combines non‐negative matrix factorisation and principal component analysis, integrating the advantages and combating the disadvantages of bot…

The role of grain boundary ferrite evolution and thermal aging on creep cavitation of type 316H austenitic stainless steel Open

Siqi He, Hao Shang, A. Fernández-Caballero, Alexander Warren, David Knowles , et al. · 2021

Observation of stress corrosion cracking using real-time in situ high-speed atomic force microscopy and correlative techniques Open

Stacy Moore, R. Burrows, David Kumar, Maximilian Benedikt Kloucek, Alexander Warren , et al. · 2021

Microstructural considerations of enhanced tensile strength and mechanical constraint in a copper/stainless steel brazed joint Open

Y. Li, David Parfitt, P. E. J. Flewitt, Xiaodong Hou, Jairo Fonseca , et al. · 2020

The Role of Grain Boundary Orientation and Secondary Phases in Creep Cavity Nucleation of a 316H Boiler Header Open

T. Martin, Siqi He, Alexander Warren, Hao Shang, David Knowles , et al. · 2020

Cavity formation during creep of steels at high temperatures and stresses is closely related to the original and evolved microstructure, particularly the orientation between grains and precipitation at the grain boundaries. Understanding t…

Optimisation and thermo-mechanical analysis of a coated steam dual pipe system for use in advanced ultra-supercritical power plant Open

Xiangke Guo, Adil Benaarbia, Wei Sun, A.A. Becker, A. Morris , et al. · 2020

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

A.H. Yaghi, Thomas H. Hyde, A.A. Becker, Wei Sun, Wu Wen , et al. · 2020

Nanometre to micrometre length-scale techniques for characterising environmentally-assisted cracking: An appraisal Open

R. Clark, Robert Burrows, Rajesh Patel, Stacy Moore, K Hallam , et al. · 2020

The importance of correction factors in interpreting microcantilever beam test data Open

Alexander Warren, P.J. Heard, Ana I. Martinez-Ubeda, P. E. J. Flewitt · 2020

Understanding the mechanical properties of materials is key to the safe and successful design and operation of components and structures used across a range of industries. Traditionally at the macro-length scale there are a wide range of t…

Carbide precipitation associated with carburisation of 9Cr–1Mo steel in hot CO2 gas Open

Chong Liu, P.J. Heard, I. Griffiths, D Cherns, P. E. J. Flewitt · 2019

Thermal and stress analyses of a novel coated steam dual pipe system for use in advanced ultra-supercritical power plant Open

Xiaofeng Guo, Wei Sun, A.A. Becker, A. Morris, M.J. Pavier , et al. · 2019

Reducing steam transport pipe temperatures in power plants Open

Christopher Wales, Michael J. Tierney, M.J. Pavier, P. E. J. Flewitt · 2019

The Implications of Fabrication and Cast-to-Cast Variability on Thermal Aging in the Creep Range for AISI Type 316H Stainless Steel Components Open

Alexander Warren, Ana I. Martinez-Ubeda, I. Griffiths, P. E. J. Flewitt · 2018

Life prediction is critical for safe operation of plant within the creep regime. This study investigates the influence differences in specific composition and fabrication routes have on creep degradation for components with compositions wi…

Modelling of deformation and fracture for a model quasi-brittle material with controlled porosity: Synthetic versus real microstructure Open

Branko Šavija, Gillian Smith, Dong Liu, Erik Schlangen, P. E. J. Flewitt · 2018

Precipitation within localised chromium-enriched regions in a Type 316H austenitic stainless steel Open

Alexander Warren, I. Griffiths, P. E. J. Flewitt · 2018

A Type 316H austenitic stainless steel component containing Cr and impurity element-rich localised regions arising from component fabrication was aged for a prolonged period during service at a temperature of approximately 550 °C. These re…

Modelling deformation and fracture of Gilsocarbon graphite subject to service environments Open

Branko Šavija, Gillian Smith, P.J. Heard, E. Sarakinou, Ed Darnbrough , et al. · 2017

A study of breakaway oxidation of 9Cr–1Mo steel in a Hot CO<sub>2</sub> atmosphere using Raman spectroscopy Open

Chong Liu, P.J. Heard, Scott J. Greenwell, P. E. J. Flewitt · 2017

The microstructure of the oxide scale and parent metal in ferritic 9Cr–1Mo steel was observed to explore the oxidation and carburisation mechanisms upon exposure to a CO2 gas environment at high temperature and high pressure. An experiment…

An evaluation of the carburised microstructure of ferritic 9Cr-1Mo steel following exposure to hot CO2 gas Open

C. Liu, P.J. Heard, P. E. J. Flewitt, Thomas B. Scott, Jonathan Pearson , et al. · 2017

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