Deleterious Intergranular Phases in Nickel Alloy 725: Detection, Identification and Quantification
Alloy 725 is used in critical oil and gas equipment. However, failures have occurred, evidencing the lack of understanding of the role played by microstructure and the limitations of the current regulations. This work found a distinctive microstructural feature in failed batches. Specifically, faile...
| Main Author: | |
|---|---|
| Format: | Thesis |
| Published: |
Curtin University
2021
|
| Online Access: | http://hdl.handle.net/20.500.11937/88096 |
| _version_ | 1848764959223185408 |
|---|---|
| author | Hazarabedian, Maria Sofia |
| author_facet | Hazarabedian, Maria Sofia |
| author_sort | Hazarabedian, Maria Sofia |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Alloy 725 is used in critical oil and gas equipment. However, failures have occurred, evidencing the lack of understanding of the role played by microstructure and the limitations of the current regulations. This work found a distinctive microstructural feature in failed batches. Specifically, failed batches had a significant extent of F phase at grain boundaries, which increased cracking susceptibility. Additionally, the method developed to detect such microstructures may serve as a new qualification test. |
| first_indexed | 2025-11-14T11:27:38Z |
| format | Thesis |
| id | curtin-20.500.11937-88096 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:27:38Z |
| publishDate | 2021 |
| publisher | Curtin University |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-880962024-03-27T02:59:31Z Deleterious Intergranular Phases in Nickel Alloy 725: Detection, Identification and Quantification Hazarabedian, Maria Sofia Alloy 725 is used in critical oil and gas equipment. However, failures have occurred, evidencing the lack of understanding of the role played by microstructure and the limitations of the current regulations. This work found a distinctive microstructural feature in failed batches. Specifically, failed batches had a significant extent of F phase at grain boundaries, which increased cracking susceptibility. Additionally, the method developed to detect such microstructures may serve as a new qualification test. 2021 Thesis http://hdl.handle.net/20.500.11937/88096 Curtin University fulltext |
| spellingShingle | Hazarabedian, Maria Sofia Deleterious Intergranular Phases in Nickel Alloy 725: Detection, Identification and Quantification |
| title | Deleterious Intergranular Phases in Nickel Alloy 725:
Detection, Identification and Quantification |
| title_full | Deleterious Intergranular Phases in Nickel Alloy 725:
Detection, Identification and Quantification |
| title_fullStr | Deleterious Intergranular Phases in Nickel Alloy 725:
Detection, Identification and Quantification |
| title_full_unstemmed | Deleterious Intergranular Phases in Nickel Alloy 725:
Detection, Identification and Quantification |
| title_short | Deleterious Intergranular Phases in Nickel Alloy 725:
Detection, Identification and Quantification |
| title_sort | deleterious intergranular phases in nickel alloy 725:
detection, identification and quantification |
| url | http://hdl.handle.net/20.500.11937/88096 |