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Monotonic And Cyclic Compression Behavior Of Bulk Metallic Glasses, Matthew Webster Freels
Monotonic And Cyclic Compression Behavior Of Bulk Metallic Glasses, Matthew Webster Freels
Doctoral Dissertations
The cyclic-compression behavior of a Cu45Zr45Al5Ag5 bulk metallic glass (BMG) was investigated in order to elucidate the damage initiation and growth mechanisms. The present Cu45Zr45Al5Ag5 BMG was found to have the highest fatigue-endurance limit for BMGs reported to date. Fracture under cyclic compression occurred in a pure shear mode. In addition to many shear bands and cracks, areas of “chipping” were commonly found on the outside surfaces of the fatigue specimens. Crack growth rates were found decrease with cycles.
The effects of the as-cast specimen size, cooling rate, and the free volume content on the monotonic and cyclic compression behavior …