A bridge from metallic glasses to medium-entropy alloys in Ti-Cu-Zr-Pd-Co system: Design, microstructure, and deformation-induced-martensitic transformation
Source abstract
Abstract
Since single solid solution tends to form in medium- or high-entropy alloys (MEAs or HEAs), it offers an opportunity to obtain shape-memory type bulk metallic glass (BMG) composites when the selected system belongs to not only BMG but also MEAs or HEAs. Herein, through phase prediction parameters used in MEAs and HEAs, the phase formations for the medium-entropy Ti 40Cu 36-xZr 10Pd 14Co x ( x = 2, 4, and 6 at.%) glass-forming alloys were evaluated before experiments. According to prediction, both fully amorphous samples and BMG composites were fabricated by rapid solidification. To observe the phase formations and the transformation-induced-plasticity (TRIP) effect, fully crystalline MEAs were obtained by annealing. With increasing Co addition, B2 Ti(Pd,Cu) phase can be stabilized to room temperature. All the samples exhibit excellent mechanical properties mainly due to different contributions from the transformation strengthening, second phase strengthening, and dislocations strengthening effects.
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Research context
OpenAlex topics: Metallic Glasses and Amorphous Alloys · High Entropy Alloys Studies · Phase-change materials and chalcogenides
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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