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The following is a photomicrograph of the surface of a polished and etched polycrystalline specimen of an iron-chromium alloy with the grain boundaries revealed as dark lines. Determine: (i) the mean intercept length (7) of the grains in millimeters, and (ii) the ASTM grain size number, G. (For part (i), use at least seven straight line segments for the determination. Also, use the scale bar to estimate the magnification at which this photomicrograph was taken). Figure 4.15 (b) from Callister & Rethwisch 100 μm

The following is a photomicrograph of the surface of a polished and etched polycrystalline specimen of an iron-chromium alloy with the grain boundaries revealed as dark lines. Determine: (i) the mean intercept length (7) of the grains in millimeters, and (ii) the ASTM grain size number, G. (For part (i), use at least seven straight line segments for the determination. Also, use the scale bar to estimate the magnification at which this photomicrograph was taken). Figure 4.15 (b) from Callister & Rethwisch 100 μm

Elements Of Electromagnetics
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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The following is a photomicrograph of the surface of a polished and etched polycrystalline specimen of an iron-chromium alloy with the grain boundaries revealed as dark lines. Determine: (i) the mean intercept length (7) of the grains in millimeters, and (ii) the ASTM grain size number, G. (For part (i), use at least seven straight line segments for the determination. Also, use the scale bar to estimate the magnification at which this photomicrograph was taken). Figure 4.15 (b) from Callister & Rethwisch 100 μm
Transcribed Image Text:The following is a photomicrograph of the surface of a polished and etched polycrystalline specimen of an iron-chromium alloy with the grain boundaries revealed as dark lines. Determine: (i) the mean intercept length (7) of the grains in millimeters, and (ii) the ASTM grain size number, G. (For part (i), use at least seven straight line segments for the determination. Also, use the scale bar to estimate the magnification at which this photomicrograph was taken). Figure 4.15 (b) from Callister & Rethwisch 100 μm
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