Microstructures
by
George
Langford, Sc.D., Massachusetts Institute of Technology, Cambridge, MA,
1966
Copyright©2005 by George Langford
Cast Irons, High Alloy Steels,
and Superalloys - Lesson 1 - Sixth specimen
|
In order to recognize that this is a white cast iron (seen
here at 500X; it is the chill zone
of a railroad car wheel) you must notice that there is a distinct
boundary around the massive white phase which separates it from the
ferrite in the pearlite. The pearlite was formerly the austenite
component of the eutectic microconstituent, and the massive white phase
is cementite.
|