Abstract
The phenomenon of Transformation-Induced Plasticity (TRIP effect) and metallurgical concept of low-alloyed TRIP steels are presented. Optimal heat treatment including roles of initial structure, annealing temperature, and parameters of isothermal bainite reaction is discussed. The relationship between microstructure and mechanical properties of TRIP steels including the strength, ductility, strain hardening, and baking hardenability is considered focusing on the importance of austenite stability, minimizing fresh martensite, and microstructure refinement. Consideration of various effects of alloying elements separate the role of ferrite-stabilizing elements preventing carbide formation and hence facilitating the enrichment of austenite by carbon and elements affecting austenite hardenability and kinetics of bainite reaction. Effects of microalloying elements on structure refinement and the balance of strength and ductility are presented. Fracture features of TRIP steels and in particular, high energy absorption, fatigue behavior, and resistance to hydrogen embrittlement are described.
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Fonstein, N. (2015). TRIP Steels. In: Advanced High Strength Sheet Steels. Springer, Cham. https://doi.org/10.1007/978-3-319-19165-2_5
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