41 phase diagram of steel
At the highest temperatures, the liquid phase field can be found, and below this are the two-phase fields (liquid + austenite, liquid + cementite, and liquid + delta-ferrite). In heat treating of steels, the liquid phase is always avoided. The steel portion of the Fe-C phase diagram covers the range between 0 and 2.08 wt. % C. which sigma phase is found and often hasten the kinetics of the sigma phase transformation (Refs. 8, 17-20). Howev er, the exact role that these factors play in promoting sigma phase formation is still somewhat obscure. Studies have been conducted recently on the phase stability of Types 308 and 308CRE* stainless steel, both in the as- 4140 Steel Phase Diagram. Transcript of ISOTHERMAL TRANSFORMATION OF STEEL. Austenite Ferrite Pearlite Bainite Martensite Tensile Test ISOTHERMAL. Bruce L. Bramfitt, Homer Research Laboratories, Bethlehem Steel Corporation. Basis of Material .. tion of the constituent on a phase diagram. Fer- rous alloy . Phase diagram...