AbstractsEngineering

The initial stages of annealing of high purity aluminum.

by Mati. Tiivel




Institution: McGill University
Department: Department of Engineering.
Degree: Master of Engineering.
Year: 1961
Keywords: Metallurgical Engineering.
Record ID: 1581975
Full text PDF: http://digitool.library.mcgill.ca/thesisfile113552.pdf


Abstract

Metals have been produced, worked and used since prehistoric times. For thousands of years however, most of the knowledge relating to metals was acquired by chance and the experience gained was passed from man to man through the centuries. Thus, many important processes such as forging and annealing, were carried out for centuries without anyone realizing what structural changes were actually taking place. In fact no attempt to explain the changes that occur during annealing was made until 1881. In that year Kalisher observed that heating caused changes in the "molecular structure" of cold worked zinc.