Relationship between microstructure and fracture types in a UNS S32205 duplex stainless steel
Duplex stainless steels are susceptible to the formation of sigma phase at high temperature which could potentially be responsible for catastrophic service failure of components. Thermal treatments were applied to duplex stainless steels in order to promote the precipitation of different fractions o...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2013-06-01
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| Series: | Materials Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000500001&tlng=en |
| _version_ | 1798015324083191808 |
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| author | Maria Victoria Biezma Carlos Berlanga Gorka Argandona |
| author_facet | Maria Victoria Biezma Carlos Berlanga Gorka Argandona |
| author_sort | Maria Victoria Biezma |
| collection | DOAJ |
| description | Duplex stainless steels are susceptible to the formation of sigma phase at high temperature which could potentially be responsible for catastrophic service failure of components. Thermal treatments were applied to duplex stainless steels in order to promote the precipitation of different fractions of sigma phase into a ferrite-austenite microstructure. Quantitative image analysis was employed to characterize the microstructure and Charpy impact tests were used in order to evaluate the mechanical degradation caused by sigma phase presence. The fracture morphology of the Charpy test specimens were thoroughly observed in SEM, looking for a correlation between the microstructure and the fracture types in UNS S32205 duplex stainless steel. The main conclusion is the strong embrittlement effect of sigma phase since it is possible to observe a transition from transgranular fracture to intergranular fracture as increases the percentage of sigma phase. Thus, the mixed modes of fracture are predominant in the present study with high dependence on sigma phase percentages obtained by different thermal treatments. |
| first_indexed | 2024-04-11T15:31:27Z |
| format | Article |
| id | doaj.art-8f62b4381b2943778ed5fde60fe1ea3f |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-04-11T15:31:27Z |
| publishDate | 2013-06-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-8f62b4381b2943778ed5fde60fe1ea3f2022-12-22T04:16:07ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392013-06-0116596596910.1590/S1516-14392013005000085Relationship between microstructure and fracture types in a UNS S32205 duplex stainless steelMaria Victoria Biezma0Carlos Berlanga1Gorka Argandona2University of CantabriaUniversidad Pública de NavarraCetena Foundation´s Multidisciplinary Innovation and Technology Centre of NavarreDuplex stainless steels are susceptible to the formation of sigma phase at high temperature which could potentially be responsible for catastrophic service failure of components. Thermal treatments were applied to duplex stainless steels in order to promote the precipitation of different fractions of sigma phase into a ferrite-austenite microstructure. Quantitative image analysis was employed to characterize the microstructure and Charpy impact tests were used in order to evaluate the mechanical degradation caused by sigma phase presence. The fracture morphology of the Charpy test specimens were thoroughly observed in SEM, looking for a correlation between the microstructure and the fracture types in UNS S32205 duplex stainless steel. The main conclusion is the strong embrittlement effect of sigma phase since it is possible to observe a transition from transgranular fracture to intergranular fracture as increases the percentage of sigma phase. Thus, the mixed modes of fracture are predominant in the present study with high dependence on sigma phase percentages obtained by different thermal treatments.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000500001&tlng=enduplex stainless steelsigma phasemicrostructurefractography |
| spellingShingle | Maria Victoria Biezma Carlos Berlanga Gorka Argandona Relationship between microstructure and fracture types in a UNS S32205 duplex stainless steel Materials Research duplex stainless steel sigma phase microstructure fractography |
| title | Relationship between microstructure and fracture types in a UNS S32205 duplex stainless steel |
| title_full | Relationship between microstructure and fracture types in a UNS S32205 duplex stainless steel |
| title_fullStr | Relationship between microstructure and fracture types in a UNS S32205 duplex stainless steel |
| title_full_unstemmed | Relationship between microstructure and fracture types in a UNS S32205 duplex stainless steel |
| title_short | Relationship between microstructure and fracture types in a UNS S32205 duplex stainless steel |
| title_sort | relationship between microstructure and fracture types in a uns s32205 duplex stainless steel |
| topic | duplex stainless steel sigma phase microstructure fractography |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000500001&tlng=en |
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