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by which the microstructure is revealed

*
Fig. 2. (b) — Microstructure of pure iron between the A₂ and A₃ transformations
(cropped from border and page)

Specimens heated to a temperature a little below A, show an irregular branching network within the grains themselves (Fig. 2b).

ex Henry S. Rawdon and Howard Scott. "Microstructure of iron and steel at high temperatures." Scientific papers of the Bureau of Standards No. 356 (March 15, 1920) : 519-528
University of California copy, digitized April 4, 2007

epigram ex p 520
 

11 January 2014
tags: H. S. Rawdon; H. Scott; drawing; iron; metallography; metallurgy