Fig. 2: Microstructures of 3D-printed NiTi alloys. | Nature Communications

Fig. 2: Microstructures of 3D-printed NiTi alloys.

From: 3D-printed NiTi alloys for elastocaloric cooling

Fig. 2: Microstructures of 3D-printed NiTi alloys.The alternative text for this image may have been generated using AI.

a Micro-computed tomography (μ-CT) image showing an ultralow defect density (<0.02%; BD: building direction). b Electron backscatter diffraction (EBSD) images revealing bimodal grain morphology with micron grains and refined grain clusters. Red lines represent low-angle grain boundaries (2–10°); black lines represent high-angle grain boundaries (>10°). Morphologies along BD are presented in Fig. S10. c Transmission electron microscopy (TEM) image depicting dispersed sub-micron particles. d High-magnification TEM image of a particle belonging to the Ti2Ni phase, as confirmed by energy-dispersive X-ray spectroscopy (EDS), selected area electron diffraction (SAED), and high-resolution TEM. e Differential scanning calorimetry curve illustrating B2–B19′ transformation with an Af of 8.5 °C. f Schematic of bimodal microstructures.

Back to article page