ABSTRACT
Strength and ductility are very important properties of a material that are required by the industries for manufacturing their products, but in most scenarios, their behavior goes against each other; that is, if you try to increase one property, the other one degrades itself. This problem is reduced to a great extent by carbide-freebainite (CFB), which is the advancement obtained by researchers by studying the microstructure and performing experiments on different grades of steel. In this chapter, a review of the role of retained austenite (RA) is studied. The effect of RA on the mechanical properties of CFB is also discussed in depth. The chapter enables the reader to know about the mechanism of RA and the way in which it enhances or degrades the different mechanical properties of CFB, such as strength, ductility, hardness, fatigue, and the like.
