Abstract
The ambient-temperature subcritical growth behaviour of SiC-whisker-reinforced yttria-stabilized zirconia (SiCw/3Y-TZP) ceramic composites is investigated during cyclic fatigue loading. Based on long-crack experiments using four-point bending specimens, cyclic fatigue crack growth rates (over the range 10 −10 to 10 −5(m/cycle)) are found to be sensitive to the maximum stress intensity factor and load ratio. Similar to other ceramic materials, the long crack fatigue threshold, ΔK TH , is found to be of the order of 45% of K Ic , and enhanced with increasing fracture toughness. A unique growth law strongly dependent on the K max and modestly on ΔK is established. Possible mechanisms for cyclic crack growth in whisker-reinforced zirconia composite materials are discussed.
Sign-in/Register to access full text options 
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.
