How will results vary for grain size when using the linear intercept method versus the circular grid method?
How will results vary for grain size when using the linear intercept method versus the circular grid method?
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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How will results vary for grain size when using the linear intercept method versus the circular grid method?
Expert Solution
Step 1
In the linear intercept method, the micrograph does not require marking to obtain an accurate count. Here the template is placed over the grain structure without bias and the number of grain boundary intersections (P) is counted. Now dividing the true line length (L) by P we get mean lineal intercept length (l),
Finally, the grain size G by linear intercept method is calculated as :
G = (-6.644 log l – 3.288)
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