Method for observing vanadium excluded phase in vanadium and nitrogen containing high-carbon steel wire rod
A high-carbon steel and precipitation technology, applied in the field of steel testing, can solve the problems of less application research on high-carbon steel, and achieve the effect of clear edges and corners and uniform distribution.
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Embodiment 1
[0021] The chemical composition of the sample is based on the chemical composition of WSWRH82B steel produced by WISCO. A certain amount of vanadium-iron or vanadium-nitrogen alloy was added in the pilot plant. The main chemical composition is as follows: 0.83% C, 0.096% V, 0.0091% N; Process the wire rod into a sample of ￠8mm×12mm, raise the temperature to 1150°C at a rate of 10°C / S, keep it at this temperature for 300s for solution treatment, and cool it to 950°C at a cooling rate of 5°C / S and keep it for 30min , and finally, cool to room temperature with the furnace. Observe the cooled sample under an electron microscope to obtain a precipitate phase photo and an energy spectrum, such as figure 1 .
Embodiment 2
[0023] The main chemical composition of the sample is as follows: 0.76% C, 0.096% V, 0.016% N, etc. Process the wire rod into a sample of ￠8mm×12mm, heat up to 1150°C at a rate of 10°C / S, hold at this temperature for 300s for solution treatment, cool to 950°C at a cooling rate of 5°C / S and hold for 30min, and finally , cooled to room temperature with the furnace. Observe the cooled sample under an electron microscope to obtain a precipitate phase photo and an energy spectrum, such as figure 2 .
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