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| Content Provider | Springer Nature Link |
|---|---|
| Author | Manwatkar, Sushant K. Narayana Murty, S. V. S. Ramesh Narayanan, P. Sharma, S. C. Venkitakrishnan, P. V. |
| Copyright Year | 2016 |
| Abstract | M250 grade maraging steel is used widely in satellite launch vehicle structures due to its excellent combination of strength and toughness. One of the maraging steel bolts used in interstage structures was found broken during the visual inspection of the hardware. The failed bolt was in assembled condition for several months. The bolt has failed at the stepped region before the start of threads. Crack initiated at the corrosion pits located at the stepped region and propagated inward in an intergranular mode. Fractography revealed brittle intergranular features and corrosion products were noticed on the outer periphery of the fracture surface. EDS analysis of the corrosion products near the fracture edge indicated the presence of chlorine. However, at the center of the bolt, the fractographic features correspond to transgranular mode of failure. Based on detailed metallurgical analysis, the failure of the bolt was attributed to ‘stress corrosion cracking.’ |
| Starting Page | 411 |
| Ending Page | 420 |
| Page Count | 10 |
| File Format | |
| ISSN | 21929262 |
| Journal | Metallography, Microstructure, and Analysis |
| Volume Number | 5 |
| Issue Number | 5 |
| e-ISSN | 21929270 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2016-09-14 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Stress corrosion cracking Maraging steel Stepped shear bolt Microstructure Fractography Metallic Materials Characterization and Evaluation of Materials Structural Materials Surfaces and Interfaces, Thin Films Nanotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Metals and Alloys |
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