✍ Scribed by Tae-hyun Nam; Jae-hwa Lee; Gyu-bong Cho; Yeon-wook Kim
No coin nor oath required. For personal study only.
Stabilization of the B19 martensite by rapid solidification in a Ti-45Ni-5Cu (at.%) alloy has been investigated by means of differential scanning calorimetry and transmission electron microscopy. Rapid solidification process induced the B2-B19 transformation prior to formation of the B19 martensite, and thus the two-stage B2-B19-B19 transformation occurred in as-spun Ti-45Ni-5Cu alloy ribbons. Inducement of the B19 martensite was ascribed to the formation of Ti 2 Ni particles coherent with the B2 matrix. With increasing Ti content from 49 to 51 at.%, the temperature range where the B19 martensite exists was expanded from 7 to 25 K, which was attributed to an increase in volume fraction of Ti 2 Ni particles from 10 to 55% and a decrease in the size from 16 to 5 nm.
📜 SIMILAR VOLUMES
Melt spinning of TisoNiso\_~ Cu x (x = 10, 25, 40) alloys showed that the glass-forming ability is good for Cu-rich compositions and poor for Ni-rich compositions. The results of mechanical alloying experiments in the same system showed a reverse trend as far as the glass-forming ability is concerne