Tensile and fatigue test methods using sub-millimetre-ordered small specimens were developed and applied for product improvement. These small test methods were further developed to evaluate cyclic stress-strain and shear fatigue properties. This paper introduces examples of the application of these testing methods to our new product development and research.

Electron backscattered diffraction(EBSD)technique is the crystal orientation analysis method of the materials using scanning electron microscopy(SEM). Recently, the transmission-EBSD(t-EBSD) method with higher resolution and the measurement method of the lattice strain(EBSD-Wilkinson method)have been developed based on the EBSD. Therefore, the recent EBSD method can measure the crystal orientation of the materials under higher spatial resolution and can evaluate its mechanical properties. In this paper, our research topics using the t-EBSD method or the EBSD-Wilkinson method are introduced.