OBJECT OF THE EXPERIMENT

Explain the experiment briefly

Why do we need this experiment?

EXPERIMENT QUESTIONS

Determine the following with regard to Figure $1.$

Mean intercept length.

ASTM grain size number.

Figure $1.$ Microstructure of a metal.

Describe working principle of SEM or TEM $($only one of them$).$

For an ASTM grain size of $5,$ approximately how many grains would there be per $m{m}^2$ under each of the following conditions?

a$.$ For magnification of $50x$

b$.$ For no magnification