Abstract
A study has been made of the fatigue fracture mechanism in A6061 T6 metal matrix composite (MMC) reinforced with 5vol.% SiC particulate at room and elevated temperatures. The main results are summarized as follows. (1) Fatigue strengh decreased with increase of ambient temperature. (2) Relationship between fatigue life and temperature followed the Arrhenius rule. Therefore the fracture mechanism was the same, irrespective of ambient temperature. (3) Fatigue cracking of MMC initlated in the aluminum matrix and crack growth was in the shear mode, because the morphology of the fractured surface showed crystallographic facets. Then, fatigue crack growth mode changed from shear to monotonic fracture mode. (4) The transition occurred at the point at which the plastic zone size of the crack tip became larger than the average SiC particle 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 callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
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.
