The document discusses optical images and characterization of the microstructure of pure iron using optical microscopy and X-ray diffraction techniques. It examines grain size distribution and uses vacuum arc technique to study pure iron samples.

1. OPTICAL IMAGES OF PURE IRON
AND VACCUM ARC TECHNIQUE
GERUGANTI SUDHAKAR
PHD(MATERIALS ENGINEERING)

4. Grain Size Distribution
CHARACTERISATION OF MICRO-STRUCTURE :
OPTICAL MICROSCOPY

10. CHARACTERISATION BY XRD : X-RAY DIFFRACTION TECHNIQUE