If 32 grains per square inch are measured at a magnification of 800x in a hypothetical metal's micrograph, Determine the ASTM grain size number. Round-off to the nearest whole number. How many grains would there be per square inch if the magnification is 200x? Round-off to the nearest whole number.

If 32 grains per square inch are measured at a magnification of 800x in a hypothetical metal's micrograph, Determine the ASTM grain size number. Round-off to the nearest whole number. How many grains would there be per square inch if the magnification is 200x? Round-off to the nearest whole number.

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter26: Welding Metallurgy

Section: Chapter Questions

Problem 33R

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Concept explainers

Solidification of metals

The term solidification indicates the conversion of material from the state of liquid to the state of solid. The solid-state is more compact and rigid than liquid, and the solidification indicates the transformation of material from a random state to a more compact and crystalline form. The point at which dendrite formation in liquid starts taking place is referred to as the solidification point.

Question

If 32 grains per square inch are measured at a
magnification of 800x in a hypothetical metal's
micrograph,
Determine the ASTM grain size
number.
Round-off to the nearest whole number.
How many grains would there be per
square inch if the magnification is
200x?
Round-off to the nearest whole number.

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