Indentation and deformation behavior of FeCo-based bulk metallic glass alloys

Effect of Au additions on the structure and properties of (Fe0.5Co0.5)71Nb4Si5B20 bulk metallic glass

“…Cracking in A4 occurred due to lower toughness of the alloy where nucleation and propagation of a crack is energetically favourable as compared to formation of shear bands. No shear bands were observed around the indent edges in A4, a behaviour similar to that observed in [23].…”

“…Although a small amount of boride was observed in A2, α-FeCo remained the major phase that was formed with the increasing amount of Au as shown by the XRD graphs in Figure 1. Its formation resulted in an increase in the amount of B and Nb in the amorphous matrix [20,21] as compared to the amount in the bulk composition thereby increasing both T g and T m [22,23]. Increase in the Nb content of the amorphous phase as a consequence of increase in the amount of α-FeCo with increasing Au content of the alloy resulted in the formation of FeNbSi Laves phase [24] for Au content of 1 at.-% and higher.…”

Investigation of Quasi-Static Indentation Response of Inkjet Printed Sandwich Structures under Various Indenter Geometries

“…These shear failure modes can be controlled based on proper selection of facesheet material and orientation, as the inertia of the sandwich panel increases causing it to perform well under high loads [ 14 , 15 ]. A wide range of testing has been done on sandwich panels by varying the facesheet [ 12 ], the core materials [ 16 ] such as aluminum foam [ 17 ], the thickness of the core (thin walled structures) [ 18 , 19 ] and core designs such as circular composites [ 20 ], corrugated Y-frame cores [ 21 ], and bulk glass alloys [ 22 ]. Previously, work was done to report the role of various indenter geometries during indentation together with their energy absorption characteristics [ 17 , 23 , 24 ].…”