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| Content Provider | Springer Nature Link |
|---|---|
| Author | Pustode, Mangesh D. Raja, V. S. |
| Copyright Year | 2015 |
| Abstract | The hot salt stress corrosion cracking behavior of Ti-6A1-2Sn-4Zr-2Mo-0.1Si (Ti-6242S) alloy was studied in the temperature range from 523.15 K to 673.15 K (250 °C to 400 °C). The alloy showed marginal susceptibility at 573.15 K (300 °C), and the extent susceptibility found to increase significantly at higher test temperatures. The specimens did not fail in long-term (1000 hours) hot salt constant load exposure tests carried out at 623.15 K and 673.15 K (350 °C and 400 °C), even at the stress levels more than the 80 pct of their ultimate tensile strength. However, the salt exposure in both stressed and unstressed conditions found to significantly impair the room-temperature ductility. The study shows that pitting and formation of slip step were the precursor events for SCC initiation; and the cracks were found to grow in transgranular manner in the primary-α phase and discontinuous-faceted manner in the transformed β colony. Furthermore, the XRD analysis of hot salt-exposed specimens revealed the presence of titanium hydride phase, which could be responsible for the embrittlement. |
| Starting Page | 6081 |
| Ending Page | 6089 |
| Page Count | 9 |
| File Format | |
| ISSN | 10735623 |
| Journal | Metallurgical and Materials Transactions A |
| Volume Number | 46 |
| Issue Number | 12 |
| e-ISSN | 15431940 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2015-09-14 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Metallic Materials Characterization and Evaluation of Materials Structural Materials Surfaces and Interfaces, Thin Films Nanotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Mechanics of Materials Metals and Alloys Condensed Matter Physics |
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