Zobrazeno 1 - 10
of 71
pro vyhledávání: '"João Quinta da Fonseca"'
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d0c5c573293ee4e48bed98fd0531012
https://doi.org/10.2139/ssrn.4233769
https://doi.org/10.2139/ssrn.4233769
Autor:
Berzah Yavuzyegit, Egemen Avcu, Albert D. Smith, Jack M. Donoghue, David Lunt, Joseph D. Robson, Timothy L. Burnett, João Quinta da Fonseca, Philip J. Withers
Publikováno v:
Yavuzyegit, B, Avcu, E, Smith, A, Donoghue, J M, Lunt, D, Robson, J D, Burnett, T L, Quinta da Fonseca, J & Withers, P J 2023, ' Mapping Plastic Deformation Mechanisms in AZ31 Magnesium Alloy at the Nanoscale ', Acta Materialia . https://doi.org/10.1016/j.actamat.2023.118876
By coupling an improved speckle patterning method enabling high resolution digital image correlation (HRDIC) at nanoscale strain resolution (146 nm) with a scanning electron microscope allowing autonomous experimental control and image acquisition du
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bbe5dc89c56d4ec6e5661a2cae0574f
https://doi.org/10.2139/ssrn.4198880
https://doi.org/10.2139/ssrn.4198880
Publikováno v:
Orozco-caballero, A, Jackson, T & Da Fonseca, J Q 2021, ' High-Resolution Digital Image Correlation study of the strain localization during loading of a shot-peened RR1000 nickel-based superalloy ', Acta Materialia . https://doi.org/10.1016/j.actamat.2021.117306
The improved crack nucleation resistance of shot-peened materials has been usually studied from the point of view of the residual compression stresses. Nevertheless, experimental limitations have made difficult to quantify strain localization during
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5e1152a671dfce36e2a73ceea877c1c
https://doi.org/10.1016/j.actamat.2021.117306
https://doi.org/10.1016/j.actamat.2021.117306
Autor:
Hugh Shercliff, Christopher S. Daniel, Christian J. Peyton, Patryk Jedrasiak, Luke Bradley, Peter D. Honniball, João Quinta da Fonseca
Publikováno v:
Daniel, C S, Jedrasiak, P, Peyton, C J, Quinta Da Fonseca, J, Shercliff, H R, Bradley, L & Honniball, P D 2021, Quantifying Processing Map Uncertainties by Modeling the Hot-Compression Behavior of a Zr-2.5Nb Alloy . in Zirconium in the Nuclear Industry: 19th International Symposium ., STP162220190031, ASTM International, pp. 93-122 . https://doi.org/10.1520/STP162220190031
Compression dilatometer tests were used to study the hot deformation response of a zirconium (Zr)-2.5% niobium (Nb) alloy over the temperature range 650°C to 850°C and strain rates of 10−2.5 s−1 to 10+1 s−1. A high number of test conditions w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d4c70e4d3572c7e2ffbbe52b01c3004
https://doi.org/10.1520/stp162220190031
https://doi.org/10.1520/stp162220190031
Autor:
Michael Preuss, João Quinta da Fonseca, Luke Bradley, Peter D. Honniball, Christopher S. Daniel
Publikováno v:
Daniel, C S, Honniball, P D, Bradley, L, Preuss, M & Quinta Da Fonseca, J 2019, ' A detailed study of texture changes during alpha–beta processing of a zirconium alloy ', Journal of Alloys and Compounds, vol. 804, pp. 65-83 . https://doi.org/10.1016/j.jallcom.2019.06.338
The properties and performance of Zr-2.5 Nb alloys are strongly influenced by their crystallographic texture. As in similar Ti alloys, the texture evolution during hot-processing depends on the complex interactions between the α and β phases and in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::183141ccb7c67b986ad60164b4cf415c
https://doi.org/10.1016/j.jallcom.2019.06.338
https://doi.org/10.1016/j.jallcom.2019.06.338
Publikováno v:
Nguyen, C T, Romero, J, Ambard, A, Preuss, M & Quinta da Fonseca, J 2019, ' The effect of cold work on the transformation kinetics and texture of a zirconium alloy during fast thermal cycling ', Materials Science and Engineering A, vol. 746, pp. 424-433 . https://doi.org/10.1016/j.msea.2019.01.047
The effect of cold-work on the transformation kinetics and texture evolution after fast temperature cycling were studied in a dilute zirconium alloy. It was found that cold-work delays the onset of phase transformation and helps randomise the texture
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24fbdbbf7d346c0ccb8e314a902d3fac
https://doi.org/10.1016/j.msea.2019.01.047
https://doi.org/10.1016/j.msea.2019.01.047
Autor:
João Quinta da Fonseca, Xun Zhang, Conghui Liu, Timothy L. Burnett, Tianszhu Sun, Michael Preuss, Jack Donoghue, Rhys Thomas
Publikováno v:
SSRN Electronic Journal.
During service of gas turbine engines, high cycle fatigue of titanium is a leading cause of component failure highlighting the need for better understanding of the crack initiation mechanism to predict initiation sites. In this study, the relationshi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64be59c854b51ea8ef1fe381a77b3f86
https://doi.org/10.2139/ssrn.3860382
https://doi.org/10.2139/ssrn.3860382
Autor:
Claudius Dichtl, David Lunt, Michael Atkinson, Rhys Thomas, Adam Plowman, Bartosz Barzdajn, Rebecca Sandala, João Quinta da Fonseca, Michael Preuss
Publikováno v:
Dichtl, C, Lunt, D, Atkinson, M, Thomas, R, Plowman, A, Barzdajn, B, Sandala, R, Da Fonseca, J Q & Preuss, M 2022, ' Slip activity during low-stress cold creep deformation in a near-α titanium alloy ', Acta Materialia, pp. 117691 . https://doi.org/10.1016/j.actamat.2022.117691
Near-α titanium alloys are known to be susceptible to cold dwell fatigue (CDF) debit, which has been linked to the occurrence of cold creep during high-load dwell times superimposed onto low cycle fatigue loading. In order to shed new light on the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::849a6083e12aca8e413c2afc1ff91502
https://doi.org/10.1016/j.actamat.2022.117691
https://doi.org/10.1016/j.actamat.2022.117691