Abstract
TEM investigation are performed on [011] single crystals of SRR99 after at 1033 K under a load at 680 MPa. At the creep rate minimum, multiple slip in the matrix occurs on four octahedral slip systems. Octahedral cross slip or cubic slip is not activated. Due to the superposition of coherency and external stressein small matrix channels, deformation is concentratedned in the “roof” matrix channels. During secondary creep, screw interfaial dislocations cross slip in the cube γ/gg' interfaces. In this stage, γ' precipitates are sheared by Shocley super parrials. Common shereing of matrix and γ' particles by Shockley super partials is observed. The high creep rate in the [011] orientation is considered to be caused by the stress concentration in roof matrix channels and the few actiated slip sysems.
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.
