Effect of High-Temperature Deformation in the Supercooled Liquid Region on the Service Performance of a Zr-Based Bulk Metallic Glass
Source abstract
Abstract
The high-temperature deformation behavior of a Zr57Cu15.4Ni12.6Al10Nb5 bulk metallic glass (BMG) was studied by compression tests in the supercooled liquid region. Room temperature compression tests and microhardness tests were used to evaluate the effect of high-temperature deformation on room temperature service performance of the Zr-based BMG. The results show that the optimum processing parameters of the Zr-based BMG are 451 $$\pm$$ 5 °C and the strain rates range from 0.001 to 0.01 s−1. All the room temperature plastic deformation ratios of the Zr-based BMGs that have undergone high-temperature deformation at 451 °C increase with increasing strain rate and exceeds 5.5%, which is higher than that of ordinary as-cast Zr-based BMGs. Changes in the room-temperature service performance of the Zr-based BMG are attributed to the combined action of heat and force during high-temperature deformation in the supercooled liquid region. For Zr-based BMGs, a higher strain rate during high-temperature deformation is helpful to improve the room-temperature service performance under the premise of ensuring plastic formability.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metallic Glasses and Amorphous Alloys
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References (29)
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