Metallographie

Abstract

THE scientific study of alloys has attracted a whole host of investigators during the last twelve years, and the mass of experimental material has increased with great. rapidity. Metallography has become a distinct branch of applied physical chemistry, having numerous contacts with mineralogy and with engineering science. There are many text-books dealing with the principles of metallography or with its applications, but the work now in course of publication by Dr. Guertler has a much wider scope. It aims at being a complete treatise on the subject, reviewing critically both methods and results, and also serving as a work of reference. The practical methods of thermal analysis, micrographic examination, etc., and the physical properties of alloys, are left for discussion in later volumes, and the volumes now published deal only with the equilibrium of phases in alloys. The general explanation of the meaning of the equilibrium diagram has been written with the object of making such diagrams intelligible and useful to the technical metallurgist, who may not be acquainted with the principles of physical chemistry. This general account is very clearly written, but the number of new terms introduced, and the rather complicated illustrations of possible forms of equilibrium, may repel some such readers. The discussions of such subjects as diffusion and incomplete equilibrium are excellent.

Metallographie.

By Dr. W. Guertler. Erster Band: Die Konstitution. Erster Teil. Heft i.xii. Pp. 1177. (1909–1912. Zweiter Teil.) Heft, i., Die Konstitution des Systemes Eisen-Kohlenstoff sowie der sonstigen binren Kohlenstofflegierungen. Pp. x1 + 648 + plates. (Berlin: Gebrder Borntraeger, 1913.) Price 32 marks.