Welding Ttt Diagram. Ttt diagrams upper bainite. 2 determination of ttt diagram for eutectoid steel davenport and bain were the first to develop the ttt diagram of eutectoid steel.
So called upper bainite forms around 400 550c in sheaves. Ttt diagram is used to find out the following parameters 1 nature and type of transformation. Figure 416 represents the influence of different accompanying heat treatments.
It presents a logarithmic plot between temperature and time.
Welding has little effect on the properties ofannealed single phase alloys that are strengthened by solutkjn strengthening eg. 2 rate of transformation. Using this information the regeneration temperature was determined to be 250c that is the welded samples. The next ttt shows how it affects the ur alloys.