Dynamic phase diagram of the N1 structural steel

Key Drawing Program for the Prior Eutectoid and Eutectoid Zone of Non-Equilibrium Phase Diagram of Carbon Steel

“…Point X 2 in dynamic phase diagram will move right, which shows that the consistency of carbon (C) of P structure of  phase participating in over-eutectoid reaction in over-eutectoid steel and in room temperature will rise. The dynamic phase diagram in this paper gives the specific dropping or rising diagram of the consistency of C. The test proves the accuracy of the above-mentioned variation of consistency of C. (3). This research can be popularized, for example, it can be spread to dynamic phase transformation of dynamic eutectic crystal or dynamic eutectoid reaction for all kinds of alloy steel, alloy materials and any other materials with the above-mentioned non-equilibrium and non-linear reaction and establishing their corresponding dynamic phase diagram, The computer calculation method of phase diagram and the key computer program have been setted.…”

“…non-equilibrium state phase diagrams Fig. 2-4 are precatically the dynamic phase diagrams of different cooling velocities under conditions of constant pressure, they are graphs of dynamic phase diagram measured through test [3]. In test, take the same Φ20mm hot-rolled carbon steel bar whose carbon content is 0.40% and cut it into size of test samples of Φ20×10mm that are divided into two groups, 3 rod bars per group.…”

Key Program for Non-Equilibrium Phase Diagram of Ni 1 Type Steel

“…Therefore, the author has established a air-cooling new-type dynamic phase diagram based on the new-type continuous air-cooling transformation curves, which is called the new-type dynamic phase diagram for short. It can be analyzed and compared by contrast with the common dynamic phase diagram [1,4] each other. In the figure, the coordinate of oil-and water-cooling is X-coordinate of equivalent diameter, austenizing temperature 850℃, primary stage of the working procedure is rolling, chemical components (%) are: C 0.43, Si 0.2, Mn 0.8, P 0.02, S 0.02, Cr-, Mo-, Ni 0.65~ 0.85, Al-, Nb -.…”

“…In complete eutectoid composition area, the temperature partition area from P 1 S 1 S 3 curve to P 2 S 2 S 4 curve is defined as complete eutectoid composition reaction area in this paper and the eutectoid reaction temperature partition area , in the left area of vertical lines of eutectoid composition 0.6%C ( or 0.53%C) as well as in the right area of vertical lines of eutectoid composition 0.8%C ( or 0.87%C) with the the temperature partition area from P 1 S 1 S 3 curve to P 2 S 2 S 4 curve are defined as incomplete eutectoid composition reaction area in this paper. Because space limited ,the test inspection is ommitted [1][2][3][4]…”

Program Drawing the Dynamic Phase Diagrams of MnCrNiMo Type Steels

“…Therefore, the author has established a new-type air-cooling dynamic phase diagram based on the new-type continuous air-cooling transformation curves, which is hereinafter called the new-type dynamic phase diagram for short. It can be mutually analyzed and compared by contrast with the common dynamic phase diagram [1][2][3].Based on the new-type continuous cooling transformation curves of 30MnCrNiMo type structural steel (Fig. 1), 30~45 MnCrNiMo type structural steel, the new-type dynamic phase diagrams (Fig.…”