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Definition: Stability of phases during continuous cooling of austenite. There are two types of CCT diagrams. I) Plot of (for each type of transformation) transformation start, specific fraction of transformation and transformation finish temperature against transformation time on each cooling curve.
A continuous cooling transformation ( CCT) phase diagram is often used when heat treating steel. [1] These diagrams are used to represent which types of phase changes will occur in a material as it is cooled at different rates.
Four CCT Diagrams of Steels G 46 4 M G4Si1 Steel G Mn3Ni1Mo 'Union MoNi' Steel G Mn3Ni1Mo Steel G Mn4Ni1,5CrMo Steel G Mn4Ni2CrMo Steel G91 Steel GCr15 Steel GEST80 VICTORY ESR Steel GKH (W - YW) Steel GKH (W - YW) Steel GKP (W-YW) Steel GL-E36 Steel GO4 Steel GOA Steel GP4M Steel GS-15 Mn 4 Steel
Learn how to use the time-temperature transformation (TTT) diagrams of steels to predict the microstructure and properties of different alloys. Explore the database of steel transformation diagrams and compare the effects of various elements and cooling rates on the phase transformations.
13 de oct. de 2022 · The procedure to construct a prediction model of a CCT diagram is as follows: (1) digitizing and organizing the CCT data, (2) predicting Ac 3, (3) predicting the critical cooling rate, (4) estimating the time and temperature of phase transformation at several cooling rates, and (5) drawing the comprehensive CCT diagram.
30 de mar. de 2021 · New continuous cooling transformation (CCT) equations have been optimized to calculate the start temperatures and critical cooling rates of phase formations during austenite decomposition in low-alloyed steels.
23 de abr. de 2022 · Continuous cooling transformation (CCT) diagrams are broadly used to design spe-cific heat treatments and to predict the microstructure and mechanical properties after thermal treatments [1]. Most of these curves are determined by dilatometry with or without deformation prior to cooling [2]. CTT diagrams are generally more ...
