Microstructures
by
George
Langford, Sc.D., Massachusetts Institute of Technology, Cambridge, MA,
1966
Copyright©2005 by George Langford
Unknowns - Set 1 - Seventh
specimen - M.I.T.'s #358
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What has happened to this wrought high speed steel ?
It has 18% tungsten, 4% chromium, and about 1% carbon. The
etchant was Marble's, and I made both photomicrographs at 1000X.
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