Open AccessThe effect of quenching from above the carbide temperature upon the magnetism of steel
Author(s) -
A. A. Dee
Publication year - 1923
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1923.0111
Subject(s) - carbide , quenching (fluorescence) , materials science , magnetism , ferromagnetism , carbon fibers , metallurgy , condensed matter physics , composite material , physics , quantum mechanics , composite number , fluorescence
1. The transformation which takes place in iron carbide at about 210° C. is best investigated by a study of the thermo-magnetic properties of carbon steel. For among the various changes in the physical properties of the carbide which occur as it is heated through its critical temperature, the loss of the ferromagnetic property is the most outstanding. Recently it has been suggested by Thompson and Whitehead that the sudden cooling from about 300° C. of a specimen of carbon steel leads to the suppression of the carbide change. They base their conclusions upon measurements of electrical resistance and on the difference in the etching properties of the carbide in slowly and quickly cooled specimens. If such is the case, it would appear that low temperature quenching should materially alter the magnetic properties of carbon steels. At the request of Prof. S. W. J. Smith I have tested this inference.