Abstract
An ultra high strength low alloy steel having the composition Fe - 0.3C - 1.35Cr - 0.9Mo - 0.25V - 0.1Nb (wt-%), has been developed using the electroslag refining process. In order to understand the failure behaviour of the material, tensile coupons, surface crack tension (SCT) specimens, compact tension (CT) specimens, and pressure chambers were fabricated and tested. The fracture parameters of the material were evaluated from the test data. Using these parameters a failure assessment diagram was generated to quantify the effects of the presence of cracks on material strength. Fracture strength estimates on SCT and CT specimens compare well with test results. The effects on fracture properties owing to weld/heat treatment processes have also been examined. To select a suitable failure theory for this material, failure assessment has been carried out on pressure chambers and verified with test results. Fracture analysis has also been carried out on the cylindrical vessels containing axial surface cracks and it was found that failure pressure decreases with increasing in crack size.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
