Metallurgy; an introduction to the study of physical metallurgy . ach binary system is moreclosely studied, it is found that constitutional diagrams which onfirst investigation appeared to be simple have turned out to bemore and more complex. The complexity of the iron-carbonsystem as we know it to-day may thus simply be the result ofthis minute study, so that even in this respect the system doesnot di£Eer very widely from other alloy series. An approximate constitutional diagram of the iron-carbonsystem is given in Fig. 64. This is not, strictly speaking, anequilibrium diagram, since it repre
Metallurgy; an introduction to the study of physical metallurgy . ach binary system is moreclosely studied, it is found that constitutional diagrams which onfirst investigation appeared to be simple have turned out to bemore and more complex. The complexity of the iron-carbonsystem as we know it to-day may thus simply be the result ofthis minute study, so that even in this respect the system doesnot di£Eer very widely from other alloy series. An approximate constitutional diagram of the iron-carbonsystem is given in Fig. 64. This is not, strictly speaking, anequilibrium diagram, since it represents what is probablymerely a very persistent meta-stable system. The diagram of THE IRON-CARBON SYSTEM 161 the completely stable system is not, however, thoroughlyknown and is of minor importance, since it deals with conditionsnever met with either in practice or in the laboratory. So faras it is known it is given in Fig. 65. The constitutional diagram of Fig. 64, while, strictly speaking,representing only the authors views on the constitul^ion of iron isoav. Fe Composition. Fig. 64.—Constitutional Diagram of the Iron-Carbon System. and steel, is very similar to the diagram which is accepted bythe great majority of physical metallurgists, and is practicallyidentical with that published by the International TestingAssociation in connection with the Report of the InternationalCommittee on the Nomenclature of the Microscopic Constituentsof Iron and Steel in 1912 (2). Some minor points on whichdifferences of opinion exist will be mentioned as the details - ^ 162 STUDY OF PHYSICAL METALLURGY MDO JZOO Liquid
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmetals, bookyear1922
