The coercive field for pure iron is related to the grain size of the iron by the
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The coercive field for pure iron is related to the grain size of the iron by the relationship Hc = 1.83 + 4.14/√A, where A is the area of the grain in two dimensions (mm2) and Hc has units of Aym. If only the grain size influences the 99.95% iron (coercivity 0.9 oersted), estimate the size of the grains in the material. What happens to the coercivity value when the iron is annealed to increase the grain size?
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What happens is that the iron grain grows larger and thus the coerciv...View the full answer
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Related Book For 
The Science And Engineering Of Materials
ISBN: 9781305076761
7th Edition
Authors: Donald R. Askeland, Wendelin J. Wright
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