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| Description
| - Recently developed simulative accelerated creep test (ACT) on Gleeble thermal-mechanical simulator allows in a relatively short time (less than 100 hours) microstructural transformation of creep-resisting materials to the state, resembling that of multiyear application at creep conditions. This contribution deals with comparison of the conventional creep test (CCT) with the ACTof dissimilar weld joint. Creep tests to the rupture of the weld joint made of 9Cr-1Mo and 2.25Cr-1Mo ferrite base metals, 2.25Cr-1Mo steel weld metal were carried out at temperatures ranging from 525°C to 625°C in the stress range from 40 to 220 MPa. Creep rupture strength was evaluated using Larson-Miller parameter. Evolution of microstructure, changes of precipitates and dislocation substructure were correlated with the creep strength. Critical zones of creep damage were determined. At lower temperatures and higher stresses the weld joint ruptured in the base material of P22 steel unaffected by welding, while at higher temperatures and lower stresses rupture occurred in the weld metal. The processes of recovery in connection with fine carbide dissolution and high grain boundary diffusion in refined austenitic grain zones seem to be the main causes of decrease in creep rupture strength of the weld metal in comparison to the parent material. The ACT of the weld point revealed the same critical zones for the initiation of creep failure at 575°C and 600°C under 100MPa as the CCT. Microstructural analyses of the weldment after the ACT also indicate similarity to the microstructure decay during the CCT rupture tests. An additional advantage of the ACT is the constant recording of the drop of yield stress and quasi-elasticity modulus during progress of the test’s time. Results of the both used creep test methods indicate that ACT provides adequate data, which can be used for fast assessment of the creep resistance of welded joints.
- Recently developed simulative accelerated creep test (ACT) on Gleeble thermal-mechanical simulator allows in a relatively short time (less than 100 hours) microstructural transformation of creep-resisting materials to the state, resembling that of multiyear application at creep conditions. This contribution deals with comparison of the conventional creep test (CCT) with the ACTof dissimilar weld joint. Creep tests to the rupture of the weld joint made of 9Cr-1Mo and 2.25Cr-1Mo ferrite base metals, 2.25Cr-1Mo steel weld metal were carried out at temperatures ranging from 525°C to 625°C in the stress range from 40 to 220 MPa. Creep rupture strength was evaluated using Larson-Miller parameter. Evolution of microstructure, changes of precipitates and dislocation substructure were correlated with the creep strength. Critical zones of creep damage were determined. At lower temperatures and higher stresses the weld joint ruptured in the base material of P22 steel unaffected by welding, while at higher temperatures and lower stresses rupture occurred in the weld metal. The processes of recovery in connection with fine carbide dissolution and high grain boundary diffusion in refined austenitic grain zones seem to be the main causes of decrease in creep rupture strength of the weld metal in comparison to the parent material. The ACT of the weld point revealed the same critical zones for the initiation of creep failure at 575°C and 600°C under 100MPa as the CCT. Microstructural analyses of the weldment after the ACT also indicate similarity to the microstructure decay during the CCT rupture tests. An additional advantage of the ACT is the constant recording of the drop of yield stress and quasi-elasticity modulus during progress of the test’s time. Results of the both used creep test methods indicate that ACT provides adequate data, which can be used for fast assessment of the creep resistance of welded joints. (en)
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| Title
| - Comparison of Results of Long-time Creep Test and ACT of Dissimilar Weld Joint of Steel P22 and P91
- Comparison of Results of Long-time Creep Test and ACT of Dissimilar Weld Joint of Steel P22 and P91 (en)
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| skos:prefLabel
| - Comparison of Results of Long-time Creep Test and ACT of Dissimilar Weld Joint of Steel P22 and P91
- Comparison of Results of Long-time Creep Test and ACT of Dissimilar Weld Joint of Steel P22 and P91 (en)
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| skos:notation
| - RIV/47718684:_____/11:#0000449!RIV12-MPO-47718684
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| http://linked.open...avai/predkladatel
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - I, P(FR-TI2/080), Z(MSM4771868401)
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/47718684:_____/11:#0000449
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - ferritic steels, welding, creep testing, microstructure, transmission electron microscopy (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
| - Chenai Trade Centre, Chennai, India
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - IIW International Conference on Global Trends in Joining, Cutting and Surfacing Technology
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...iv/tvurceVysledku
| - Csizmandaia, Jószef
- Jandová, Dagmar
- Jenei, István
- Kasl, Josef
- Výrostková, Anna
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| http://linked.open...vavai/riv/typAkce
| |
| http://linked.open.../riv/zahajeniAkce
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| http://linked.open...n/vavai/riv/zamer
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| number of pages
| |
| http://purl.org/ne...btex#hasPublisher
| - Narosa Publishing house PVT. Ltd.
|
| https://schema.org/isbn
| |
| is http://linked.open...avai/riv/vysledek
of | |
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