Microscale thermal characteristics of cold-rolled aluminum alloy using a thermoreflectance method

Abstract In this study, the microscale thermal propagation behavior of cold-rolled aluminum alloy sheets was characterized using a thermoreflectance (TR) method from micro and macro perspectives, relationship between crystallite sizes with different rolling reduction rates their characteristics described. The were analyzed by X-ray diffraction Scherrer’s equation. these specimens measured TR high spatial resolution several micrometers through focused laser beam controlling diffusion length. macroscale then two methods: spot periodic heating electrical resistance measurement Wiedemann–Franz law. Experimental results showed that correlated change in size. However, conductivity decreased an increase rate regardless It is expected at can be controlled