Abstract
The effects of strain rate and aging on the tensile property of high-purity Fe-50 mass%Cr and 166 mass ppm carbon-doped Fe-50 mass%Cr alloys were investigated by tensile tests and microstructural observations. The serration occurring by dynamic strain aging on the stress-strain curves disappears at the strain rate below 4.2 x 10 -5 s -1 and above 1.7 x 10 -2 s -1 at 773 K in a high-purity Fe-50 mass%Cr alloy with the grain size of 29 μm. The deformation twinning in a high-purity Fe-50 mass%Cr alloy with the grain size of 108 μm at 773 K occurs at the same stress of 480 MPa, independent of strain rate. The pre-strained specimen of high-purity Fe-50 mass%Cr alloy shows static strain aging after aging at 573 K. The aging treatment at 773 K causes the precipitation of carbides and thereby the formation of deformation twins in tensile tests. In a carbon-doped high-purity Fe-50 mass%Cr alloy, the heat treatment for precipitating carbides on grain-boundaries restrains the formation of deformation twins at 773 K.
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.
