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PLEASE ANSWER ALL OF THE QUESTIONS BELOW!!!!!!!! OR YOU WILL GET THUMBS DOWN!!!!! The picture shows the grains in an Fe-Cr alloy. a) Use the

PLEASE ANSWER ALL OF THE QUESTIONS BELOW!!!!!!!! OR YOU WILL GET THUMBS DOWN!!!!!

The picture shows the grains in an Fe-Cr alloy.

a)

Use the cut-off method and split up the light microscope image below in at least 7 parts and calculate the average grain size in mm. The dimensions of the picture are 60 x 70 mm.

b)

Calculate the ASTM grain size number for this the material at a magnification of 100X according to ASTM.

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