Zobrazeno 1 - 10
of 95
pro vyhledávání: '"John Hald"'
Publikováno v:
Heliyon, Vol 10, Iss 11, Pp e31995- (2024)
The corrosion behavior of alloy Ni 201 in molten sodium hydroxide (NaOH) at 600 °C was investigated at varying basicity levels of the molten NaOH. The ability for Ni 201 to form passivating oxides was investigated after immersion tests varying from
Externí odkaz:
https://doaj.org/article/c33ea961814d4698aa791210768e426a
Publikováno v:
Materials, Vol 17, Iss 11, p 2776 (2024)
General interest in the deployment of molten salt reactors (MSRs) is growing, while the available data on uranium-containing fuel salt candidates remains scarce. Thermophysical data are one of the key parameters for reactor design and understanding r
Externí odkaz:
https://doaj.org/article/da7a50966bc54c9094be58f5f11e7f32
Publikováno v:
Metals, Vol 12, Iss 1, p 3 (2021)
This paper presents the results of an experimental investigation of a 12% Cr steel where a significant increase in Charpy impact toughness and a slight decrease in ductile-brittle transition temperature (DBTT) from 70 °C to 65 °C were obtained thro
Externí odkaz:
https://doaj.org/article/081dee3b3cb64b069db32908fb666dde
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4d1569d1c11a14c8e55f96892113453
https://doi.org/10.2139/ssrn.4160331
https://doi.org/10.2139/ssrn.4160331
Publikováno v:
Materials Characterization. 194:112413
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::226b7e0cf4a8a5f611a4a497c40abefd
https://doi.org/10.1016/j.matchar.2022.112413
https://doi.org/10.1016/j.matchar.2022.112413
Autor:
Yohanes Chekol Malede, Kristian Vinter Dahl, John Hald, Melanie Montgomery, Flemming Bjerg Grumsen
Publikováno v:
Journal of Materials Science. 54:13787-13809
The effect of ageing of AISI 347H FG austenitic steel on KCl-induced corrosion was investigated by comparing the corrosion attack on tube material previously service-exposed for 100000 h and that on an as-received tube. Cr-rich σ-phase precipitates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2c81082bc8435b74ba5570b5130405f
https://doi.org/10.1007/s10853-019-03863-4
https://doi.org/10.1007/s10853-019-03863-4
Autor:
Torbjörn Jonsson, John Hald, Julien Phother Simon, Kristian Vinter Dahl, Yohanes Chekol Malede, Melanie Montgomery
Publikováno v:
Materials and Corrosion. 70:1486-1506
Ni–(35–45)Cr–4Nb alloys containing different fractions of α-Cr were exposed to potassium chloride (KCl)-induced corrosion. The corrosion exposures were carried out for 168 hr at 600°C in a 15% (vol/vol) H2O (g) + 5% (vol/vol) O2 (g) + N2 (g;
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dc18549f310bbd6d3e4393ce3af6314
https://doi.org/10.1002/maco.201810658
https://doi.org/10.1002/maco.201810658
Publikováno v:
Wu, D L, Dahl, K V, Christiansen, T L, Montgomery, M & Hald, J 2019, ' Corrosion behaviour of Ni and nickel aluminide coatings exposed in a biomass fired power plant for two years ', Surface and Coatings Technology, vol. 362, pp. 355-365 . https://doi.org/10.1016/j.surfcoat.2018.12.129
Ni and Ni2Al3 coatings were applied to superheater tubes that were built into a wood-fired boiler with an outlet steam temperature of 520 °C. The present paper evaluates the performance of the coatings after two years of service. The corrosion perfo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c2f92c238d7b8e836814a39ea0dffec
https://doi.org/10.1016/j.surfcoat.2018.12.129
https://doi.org/10.1016/j.surfcoat.2018.12.129
Publikováno v:
Microscopy and Microanalysis. 25:462-469
Small additions of boron can remarkably improve the long-term creep resistance of 9–12% Cr steels. The improvement has been attributed to boron segregation to grain boundaries during quenching, and subsequent boron incorporation into certain famili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e2925d363749acb9792e92f05570be9
https://doi.org/10.1017/s1431927618015726
https://doi.org/10.1017/s1431927618015726
Publikováno v:
Rashidi, M, Odqvist, J, Johansson, L, Hald, J, Andrén, H-O & Liu, F 2018, ' Experimental and theoretical investigation of precipitate coarsening rate in Z-phase strengthened steels ', Acta Materialia, vol. 4, pp. 247-254 . https://doi.org/10.1016/j.mtla.2018.09.024
Two Z-phase strengthened 12% Cr steels were investigated: they are similar in composition, however one steel contains Nb and the other contains Ta. Z-phase precipitates (CrMN, M = Nb or Ta) provide precipitation hardening for creep resistance at 650
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a434a8f7888f325a4db05faa8cb3b274
https://doi.org/10.1016/j.mtla.2018.09.024
https://doi.org/10.1016/j.mtla.2018.09.024