Homogenization and Dissolution Kinetics of Fusion Welds in INCONEL^sup ^ Alloy 740H^sup
Thermodynamic and kinetic modeling were used to determine appropriate heat treatment schedules for homogenization and second phase dissolution in INCONEL^sup ^ alloy 740H^sup ^ (INCONEL and 740H are registered trademarks of Special Metals Corporation) fusion welds. Following these simulations, a two...
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| Veröffentlicht in: | Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2014-06, Vol.45 (7), p.3051 |
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| container_title | Metallurgical and materials transactions. A, Physical metallurgy and materials science |
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| creator | Bechetti, Daniel H Dupont, John N Debarbadillo, John J Baker, Brian A |
| description | Thermodynamic and kinetic modeling were used to determine appropriate heat treatment schedules for homogenization and second phase dissolution in INCONEL^sup ^ alloy 740H^sup ^ (INCONEL and 740H are registered trademarks of Special Metals Corporation) fusion welds. Following these simulations, a two-step heat treatment process was applied to specimens from a single pass gas tungsten arc weld (GTAW). Scanning electron microscopy (SEM) has been used to assess the changes in the distribution of alloying elements as well as changes in the fraction of second phase particles within the fusion zone. Experimental results demonstrate that adequate homogenization of alloy 740H weld metal can be achieved by a 1373 K/4 h (1100 °C/4 h) treatment. Complete dissolution of second phase particles could not be completely achieved, even at exposure to temperatures near the alloy's solidus temperature. These results are in good agreement with thermodynamic and kinetic predictions.[PUBLICATION ABSTRACT] |
| doi_str_mv | 10.1007/s11661-014-2243-z |
| format | Article |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Alloys Kinetics Metallurgy Thermodynamics |
| title | Homogenization and Dissolution Kinetics of Fusion Welds in INCONEL^sup ^ Alloy 740H^sup |
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