Abstract
Rapidly solidified Fe-30Cr-5Al alloy powder was sheath-rolled. With increasing reduction in cross-sectional area, oxide films of the powder particle surface were broken or divided to some pieces and the shape of oxide film was changed from plate to granular from. In this result, bonding of the powder particles were improved. The tensile strength of sheath-rolled alloy powder without Ce increased linearly with increasing reduction in cross-sectional area from 45 to 75%. The sheath-rolled alloy powder with the addition of Ce showed low tensile strength in the low reduction. However, The sheath-rolled Fe-30Cr-5Al-0.69Ce alloy powder showed almost the same tensile strength as the Ce-free compacts in the high reduction more than 60%. The tensile strength of the sheath-rolled alloy powders with or without Ce were over 700 MPa for the range of reduction in cross-sectional area more than 70%. The fracture pattern of the sheath-rolled Fe-30Cr-5Al-0.69Ce alloy powder changed from intergranular fracture at the boundaries of primary particles to trans-granular fracture with increasing reduction in cross-sectional area.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Journal of the Japan Institute of Metals and Materials
Disclaimer: 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.