The influence of isothermal ageing and subsequent hydrogen charging at room temperature on local mechanical properties and fracture characteristics of martensitic-bainitic weldments for power engineering
The present study deals with the effects of high temperature expositions and subsequent cathodic hydrogen charging of dissimilar martensitic/bainitic weldment on its local mechanical properties and fracture behaviour at room temperature. Circumferential welded joint under investigation was...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Belgrade, Technical Faculty, Bor
2017-01-01
|
| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2017/1450-53391700033F.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832572326792658944 |
|---|---|
| author | Falat L. Čiripová L. Homolova V. Kroupa A. |
| author_facet | Falat L. Čiripová L. Homolova V. Kroupa A. |
| author_sort | Falat L. |
| collection | DOAJ |
| description | The present study deals with the effects of high temperature expositions and
subsequent cathodic hydrogen charging of dissimilar martensitic/bainitic
weldment on its local mechanical properties and fracture behaviour at room
temperature. Circumferential welded joint under investigation was produced by
tungsten inert gas welding of X10CrWMoVNb9-2 martensitic and 7CrMoVTiB10-10
bainitic steels tubes with Ni-based filler metal and the application of
subcritical postweld heat treatment. Hardness profile measurements revealed
pronounced hardness peaks in over-heated regions of the individual steels
heat-affected zones which remained preserved also during subsequent
expositions at 600°C for up to 5000 hours. Gradual microstructural
degradation of these regions included precipitate coarsening and the
formation of new secondary phases during thermal exposure. The combined
effects of thermal and hydrogen embrittlement of the studied weldment
resulted in deleterious effects on its tensile and fracture behaviour. |
| format | Article |
| id | doaj-art-22e1d9b5505d4bf1a5d0dfaab2f40677 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-22e1d9b5505d4bf1a5d0dfaab2f406772025-02-02T10:48:13ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752017-01-0153337338210.2298/JMMB170515033F1450-53391700033FThe influence of isothermal ageing and subsequent hydrogen charging at room temperature on local mechanical properties and fracture characteristics of martensitic-bainitic weldments for power engineeringFalat L.0Čiripová L.1Homolova V.2Kroupa A.3Slovak Academy of Sciences, Institute of Materials Research, Košice, Slovak RepublicSlovak Academy of Sciences, Institute of Materials Research, Košice, Slovak RepublicSlovak Academy of Sciences, Institute of Materials Research, Košice, Slovak RepublicAcademy of Sciences of the Czech Republic, Institute of Physics of Materials, Brno, Czech RepublicThe present study deals with the effects of high temperature expositions and subsequent cathodic hydrogen charging of dissimilar martensitic/bainitic weldment on its local mechanical properties and fracture behaviour at room temperature. Circumferential welded joint under investigation was produced by tungsten inert gas welding of X10CrWMoVNb9-2 martensitic and 7CrMoVTiB10-10 bainitic steels tubes with Ni-based filler metal and the application of subcritical postweld heat treatment. Hardness profile measurements revealed pronounced hardness peaks in over-heated regions of the individual steels heat-affected zones which remained preserved also during subsequent expositions at 600°C for up to 5000 hours. Gradual microstructural degradation of these regions included precipitate coarsening and the formation of new secondary phases during thermal exposure. The combined effects of thermal and hydrogen embrittlement of the studied weldment resulted in deleterious effects on its tensile and fracture behaviour.http://www.doiserbia.nb.rs/img/doi/1450-5339/2017/1450-53391700033F.pdfpower-plant steelsdissimilar weldthermal exposurehydrogen chargingmechanical propertiesfracture mechanism |
| spellingShingle | Falat L. Čiripová L. Homolova V. Kroupa A. The influence of isothermal ageing and subsequent hydrogen charging at room temperature on local mechanical properties and fracture characteristics of martensitic-bainitic weldments for power engineering Journal of Mining and Metallurgy. Section B: Metallurgy power-plant steels dissimilar weld thermal exposure hydrogen charging mechanical properties fracture mechanism |
| title | The influence of isothermal ageing and subsequent hydrogen charging at room temperature on local mechanical properties and fracture characteristics of martensitic-bainitic weldments for power engineering |
| title_full | The influence of isothermal ageing and subsequent hydrogen charging at room temperature on local mechanical properties and fracture characteristics of martensitic-bainitic weldments for power engineering |
| title_fullStr | The influence of isothermal ageing and subsequent hydrogen charging at room temperature on local mechanical properties and fracture characteristics of martensitic-bainitic weldments for power engineering |
| title_full_unstemmed | The influence of isothermal ageing and subsequent hydrogen charging at room temperature on local mechanical properties and fracture characteristics of martensitic-bainitic weldments for power engineering |
| title_short | The influence of isothermal ageing and subsequent hydrogen charging at room temperature on local mechanical properties and fracture characteristics of martensitic-bainitic weldments for power engineering |
| title_sort | influence of isothermal ageing and subsequent hydrogen charging at room temperature on local mechanical properties and fracture characteristics of martensitic bainitic weldments for power engineering |
| topic | power-plant steels dissimilar weld thermal exposure hydrogen charging mechanical properties fracture mechanism |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2017/1450-53391700033F.pdf |
| work_keys_str_mv | AT falatl theinfluenceofisothermalageingandsubsequenthydrogenchargingatroomtemperatureonlocalmechanicalpropertiesandfracturecharacteristicsofmartensiticbainiticweldmentsforpowerengineering AT ciripoval theinfluenceofisothermalageingandsubsequenthydrogenchargingatroomtemperatureonlocalmechanicalpropertiesandfracturecharacteristicsofmartensiticbainiticweldmentsforpowerengineering AT homolovav theinfluenceofisothermalageingandsubsequenthydrogenchargingatroomtemperatureonlocalmechanicalpropertiesandfracturecharacteristicsofmartensiticbainiticweldmentsforpowerengineering AT kroupaa theinfluenceofisothermalageingandsubsequenthydrogenchargingatroomtemperatureonlocalmechanicalpropertiesandfracturecharacteristicsofmartensiticbainiticweldmentsforpowerengineering AT falatl influenceofisothermalageingandsubsequenthydrogenchargingatroomtemperatureonlocalmechanicalpropertiesandfracturecharacteristicsofmartensiticbainiticweldmentsforpowerengineering AT ciripoval influenceofisothermalageingandsubsequenthydrogenchargingatroomtemperatureonlocalmechanicalpropertiesandfracturecharacteristicsofmartensiticbainiticweldmentsforpowerengineering AT homolovav influenceofisothermalageingandsubsequenthydrogenchargingatroomtemperatureonlocalmechanicalpropertiesandfracturecharacteristicsofmartensiticbainiticweldmentsforpowerengineering AT kroupaa influenceofisothermalageingandsubsequenthydrogenchargingatroomtemperatureonlocalmechanicalpropertiesandfracturecharacteristicsofmartensiticbainiticweldmentsforpowerengineering |