by George Langford, Sc.D., Massachusetts Institute of Technology, Cambridge, MA, 1966
2005 by George Langford
This is the first lesson in a set of images demonstrating metallurgical microstructures.  These microstructures are shown to be sensitive to the processing and environmental history of each macrosopic specimen.  The color photomicrographs were prepared by me from a set of specimens of known history collected by the staff of M.I.T. in the years prior to 1959.
Allow plenty of time to study and to take good notes about each specimen.  About two hours per lesson would be appropriate.  You will be expected to interpret some of these specimens during the final examination.  Feel free to use the Internet to find additional information about the alloys and applications mentioned here.
Whenever the narrator asks a question, be sure to commit yourself to an answer before going to the next page.  You can backtrack with your browser's BACK button at any time, of course.  Just be sure to click the FORWARD button to return to the proper page before proceeding so that you don't get lost.