TRIPstands for transformation-induced plasticity.
MAP_STEEL_TRIP_AUSTENITE | PROGRAM:To predict the retained austenite content and austenite carbon concentration in TRIP-assisted steels. |
MAP_STEEL_FLANGEABILITY | PROGRAM:To predict the hole expansion ratio of steel as a function of tensile test parameters. |
Creating new automotive steels |
The relatively large silicon concentration in many TRIP-assisted steels causes the formation of hard, adherent oxides making it difficult to implement surface cleaning prior to hot-rolling. This results in a poor surface finish. The stronger adhesion comes from that fact that the silicon undergoes a eutectic reaction between FeO and Fayalite (Fe 2SiO 4). This reaction occurs at typical hot-rolling temperatures and leads to the penetration of the eutectic into the steel, thereby anchoring the oxide. Residual FeO left on the surface of the eutectic then changes into Fe 2O 3which is the red oxide that gets rolled into the surface, producing an ugly finish on the steel.
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Crystal structure of Fayalite |
Crystal structure of Fayalite |
Crystal structure of Fayalite |
Crystal structure of Fayalite |
Crystal structure of Fayalite |
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