Effect of post-weld heat treatment (PWHT) on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materials
Effect of post-weld heat treatment on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materials was investigated. The results showed that Cr-rich precipitates occured in the dendrites and grain boundaries, and Cr-depletion areas appeared around Cr-rich precipitates. The degree of Cr-d...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785420313727 |
| _version_ | 1818879935772622848 |
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| author | P.L. Guo L.G. Ling |
| author_facet | P.L. Guo L.G. Ling |
| author_sort | P.L. Guo |
| collection | DOAJ |
| description | Effect of post-weld heat treatment on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materials was investigated. The results showed that Cr-rich precipitates occured in the dendrites and grain boundaries, and Cr-depletion areas appeared around Cr-rich precipitates. The degree of Cr-depletion in the dendrite was aggravated with the increase of PWHT time to 16 h, then it was gradually recovered with increasing PWHT time to 48 h. The results showed that as-weld Alloy ENiCrFe-7 was only susceptible to dendritic corrosion after EPR, the one heat treated after 615 ℃/16 h has more serious dendritic corrosion than that of as-weld Alloy, moreover, the less intergranular corrosion was also observed when the weld was heat treated at 615 ℃/16 h. Only the intergranular corrosion was exhibited in the one heat treated after 615 ℃/48 h. Howerver, Alloy ENiCrFe-7 has better corrosion resistant properties. |
| first_indexed | 2024-12-19T14:37:59Z |
| format | Article |
| id | doaj.art-b6a73da53bb2402db7a9244181749dcf |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-19T14:37:59Z |
| publishDate | 2020-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-b6a73da53bb2402db7a9244181749dcf2022-12-21T20:17:11ZengElsevierJournal of Materials Research and Technology2238-78542020-07-019486368645Effect of post-weld heat treatment (PWHT) on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materialsP.L. Guo0L.G. Ling1Corresponding author.; National Center for Materials Service Safety, University of Science and Technology Beijing, 30 Xueyan Road, 100083 Beijing, ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing, 30 Xueyan Road, 100083 Beijing, ChinaEffect of post-weld heat treatment on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materials was investigated. The results showed that Cr-rich precipitates occured in the dendrites and grain boundaries, and Cr-depletion areas appeared around Cr-rich precipitates. The degree of Cr-depletion in the dendrite was aggravated with the increase of PWHT time to 16 h, then it was gradually recovered with increasing PWHT time to 48 h. The results showed that as-weld Alloy ENiCrFe-7 was only susceptible to dendritic corrosion after EPR, the one heat treated after 615 ℃/16 h has more serious dendritic corrosion than that of as-weld Alloy, moreover, the less intergranular corrosion was also observed when the weld was heat treated at 615 ℃/16 h. Only the intergranular corrosion was exhibited in the one heat treated after 615 ℃/48 h. Howerver, Alloy ENiCrFe-7 has better corrosion resistant properties.http://www.sciencedirect.com/science/article/pii/S2238785420313727ENiCrFe-7PWHTIntergranular corrosionDendritic corrosionEPR |
| spellingShingle | P.L. Guo L.G. Ling Effect of post-weld heat treatment (PWHT) on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materials Journal of Materials Research and Technology ENiCrFe-7 PWHT Intergranular corrosion Dendritic corrosion EPR |
| title | Effect of post-weld heat treatment (PWHT) on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materials |
| title_full | Effect of post-weld heat treatment (PWHT) on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materials |
| title_fullStr | Effect of post-weld heat treatment (PWHT) on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materials |
| title_full_unstemmed | Effect of post-weld heat treatment (PWHT) on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materials |
| title_short | Effect of post-weld heat treatment (PWHT) on the intergranular corrosion of ENiCrFe-7 weld overlay cladding materials |
| title_sort | effect of post weld heat treatment pwht on the intergranular corrosion of enicrfe 7 weld overlay cladding materials |
| topic | ENiCrFe-7 PWHT Intergranular corrosion Dendritic corrosion EPR |
| url | http://www.sciencedirect.com/science/article/pii/S2238785420313727 |
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