Zobrazeno 1 - 10
of 127
pro vyhledávání: '"John N. DuPont"'
Autor:
John N. DuPont, C. J. Farnin
Publikováno v:
Metallurgical and Materials Transactions A. 52:4488-4499
MODTRIP-130, a recently designed steel adapted from the composition of superalloy A286, utilizes γ′ precipitation and the transformation induced plasticity effect to achieve high strength and toughness for a potential fit in defense applications.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9822bc392049e719e6900e9606a2a515
https://doi.org/10.1007/s11661-021-06400-8
https://doi.org/10.1007/s11661-021-06400-8
Autor:
Sean Orzolek, John N. DuPont
Publikováno v:
Metallurgical and Materials Transactions A. 52:3423-3435
Austenitic stainless steels such as 25Cr-35Ni-Nb, HP-Nb alloys are commonly used in high-temperature applications above 850 °C. The HP-Nb alloys are used in the as-cast condition and exhibit good creep properties due to chromium and niobium eutectic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2e4c1dc6fa9e763ada116f22bed81e3
https://doi.org/10.1007/s11661-021-06314-5
https://doi.org/10.1007/s11661-021-06314-5
Autor:
John N. DuPont, Boopathy Kombaiah, Jonathan P. Galler, S. Suresh Babu, Zhili Feng, Mohan Subramanian, Xinghua Yu
Publikováno v:
Welding in the World. 65:1633-1644
Dissimilar metal welds (DMWs) made between ferritic steels and austenitic alloys are used extensively in high-temperature power plant components. These DMWs experience premature creep failure in the ferritic steel’s heat affected zone (HAZ), close
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ed67a6200120de7f517fbdf38cd503d
https://doi.org/10.1007/s40194-021-01124-0
https://doi.org/10.1007/s40194-021-01124-0
Publikováno v:
Metallurgical and Materials Transactions A. 51:5771-5780
Proper characterization of solute segregation during the solidification of alloys using partition coefficients (k) is essential to understand and model solidification paths and associated microstructural evolution. Traditional methods to determine k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18f5b06ef3ad64a9d916d05c33e30db3
https://doi.org/10.1007/s11661-020-05986-9
https://doi.org/10.1007/s11661-020-05986-9
Publikováno v:
Metallurgical and Materials Transactions A. 51:2222-2238
Dissimilar metal weld failures between low alloy Cr-Mo ferritic steels and austenitic stainless steels made with Ni-base filler metals are typically observed along the fusion line. Such DMW failures often exhibit the onset of damage well before their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ad76158932de0ea9c58c99eca1bf90e
https://doi.org/10.1007/s11661-020-05715-2
https://doi.org/10.1007/s11661-020-05715-2
Publikováno v:
Metallurgical and Materials Transactions A. 50:2765-2783
Dissimilar metal welds between ferritic and austenitic alloys are common in high-temperature applications in the energy industry. Under service conditions, these welds experience carbon diffusion and concomitant detrimental microstructural changes th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb96d7acba18b454373bf1dc90b29548
https://doi.org/10.1007/s11661-019-05186-0
https://doi.org/10.1007/s11661-019-05186-0
Publikováno v:
Metallurgical and Materials Transactions A. 50:2201-2217
Carbon diffusion and the associated microstructural changes in dissimilar metal welds at elevated temperatures lead to a microstructure that is susceptible to premature failure. Graded transition joints (GTJs) can potentially provide a viable replace
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84070b98b3a9796682093287b6c771be
https://doi.org/10.1007/s11661-019-05138-8
https://doi.org/10.1007/s11661-019-05138-8
Autor:
John N. DuPont, Erin J. Barrick
Publikováno v:
Materials Science and Engineering: A. 748:189-204
The effects of welding thermal cycles on the mechanical properties of a high strength, high ballistic resistance 10 wt pct Ni steel were studied. Welding simulations were performed using a Gleeble 3500 thermal-mechanical simulator to replicate micros
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33cc568a4c7c6b80809e2c01687a061a
https://doi.org/10.1016/j.msea.2019.01.085
https://doi.org/10.1016/j.msea.2019.01.085
Autor:
Zhili Feng, S. Suresh Babu, Boopathy Kombaiah, Mohan Subramanian, Xinghua Yu, Jonathan P. Galler, John N. DuPont
Publikováno v:
Materials Science and Engineering: A. 749:1-13
Dissimilar Metal Welds (DMWs) made between ferritic low alloy steels and austenitic alloys are widely used in high temperature components of nuclear and fossil energy power plants. Literature shows that these bimetallic welds fail prematurely by cree
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::617f1e1d04ee09acc7d9d170727ce3c7
https://doi.org/10.1016/j.msea.2019.01.075
https://doi.org/10.1016/j.msea.2019.01.075
Publikováno v:
Metallurgical and Materials Transactions A. 50:719-732
Recent work has shown that the strength of fusion welds in alloys 17-4 and 13-8+Mo can be restored by re-precipitation that occurs during subsequent thermal cycles associated with multi-pass welding. The purpose of the current investigation is to dev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a7db188c53749cd8c8e9d1e592c1ee0
https://doi.org/10.1007/s11661-018-5046-9
https://doi.org/10.1007/s11661-018-5046-9