Chapter 2: The Iron-Carbon Phase Diagram and Time-Temperature-Transformation (TTT) Diagrams
This chapter describes the two types of Time-Temperature-Transformation (TTT) diagrams used and outlines the methods of determining them. As a precursor to the examination of the decomposition of austenite, it first reviews the phases and microconstituents found in steels. This includes a presentation of the iron-carbon phase diagram and the equilibrium phases. The chapter also covers the common microconstituents that form in steels, including the nomenclature used to describe them. The chapter provides a comparison of isothermal and continuous cooling TTT diagrams. These diagrams are affected by the carbon and alloy content and by the prior austenite grain size,...
The Iron-Carbon Phase Diagram and Time-Temperature-Transformation (TTT) Diagrams, Principles of the Heat Treatment of Plain Carbon and Low Alloy Steels, By Charlie R. Brooks, ASM International, 1996, p 3–41, https://doi.org/10.31399/asm.tb.phtpclas.t64560003
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