Effect of simultaneous improvement of plasticity and microhardness of an amorphous-nanocrystalline material based on Co, as a result of laser processing of nanosecond duration

Directed changing properties of amorphous and nanostructured metal alloys with help of nanosecond laser impulses

“…The absence of cracks indicates a high viscosity. On the base of analysis of distances between parallel micro-cracks it is possible to calculate viscosity of micro-fracture [11,16]. At the milli-and micro-level, the strength depends on both the microhardness and the microfracture toughness.…”

“…4 are typical for one-sided processing of the material. However, there is a possibility of simultaneous improvement of mechanical characteristics during two-way processing of samples, as was discussed in some papers [11]. According to the data of X-ray diffraction analysis, as a result of laser processing, there is no change in the structural state.…”

“…According to the data of X-ray diffraction analysis, as a result of laser processing, there is no change in the structural state. Such processing can significantly increase the required parameters while maintaining the unique physical properties of the amorphous-nanocrystalline metal alloy [11][12][13]22].…”

“…Modern technologies for the production are actively introducing methods of high-energy surface treatment of parts. These include the impact of the laser impulse, electricity plasma methods, etc [5,[11][12][13]. With the optimal selection of laser exposure modes, it is possible to create a thin layer on the surface with a certain change in the structural state of the material.…”

“…Experimental data confirm the possibility of the formation of certain properties in local areas under the influence of a given number of laser impulses, lasting several nanoseconds. Laser processing can affect not only the properties of amorphous-nanocrystalline metal alloys, but also to be effective for metals and alloys based on iron, cobalt, etc [11,14].…”