ALLVAC 718PLUS Alloy

Alloy name: ALLVAC 718PLUS
Diagram No.: 1100
Type of diagram: TTT
Chemical composition in weight %: 0.025% C, 18.0% Cr, 2.70% Mo, 1.0% W, 9.0% Co, 10.0% Fe, 5.40% Nb, 0.70% Ti, 1.45% Al, 0.007% P, 0.004% B
Alloy group: Nickel-based alloys
Note: TTT Curves of Gamma' and Gamma" Precipitation in Alloy 718Plus Generated by Modeling (Solid Line) and Experiment (Dash Line).
A TTT curve of Gamma’ and Gamma’’ phases was calculated by JMatPro, as shown in Figure, which also shows the TTT curve of Gamma’/Gamma’’ precipitation determined by hardness measurement on isothermal annealed samples [10]. It can be seen that the precipitation rate of Gamma’ phase is faster than Gamma" phase in this alloy, as it is in alloy 718. Therefore, alloy 718Plus will have faster precipitation kinetics than alloy 718. Gamma prime phase precipitation in this alloy is much slower than Waspaloy however, which has a very high Gamma’ phase precipitation rate.
Reference: Not shown in this demo version.

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