Fast scanning calorimetric measurements and microstructure observation of rapid solidified Sn3.5Ag solder droplets

- FSC was firstly utilized to simulate the laser soldering process.
- Size-dependent undercooling for Sn3.5Ag droplets was in situ measured by FSC.
- Solidification structure evolution of laser soldering process was simulated.
- This research opens a new research approach in rapid solidification field.