A kind of high-strength steel that can be prepared by room temperature q&p process, preparation method and application
A high-strength steel and high-strength technology, applied in the room temperature Q& field, can solve the problems of equipment cost and energy consumption increase, and achieve the effect of saving time, cost and promoting the TRIP effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 example
[0046] A preparation method of high-strength steel that can be prepared by room temperature Q&P process, refer to figure 1 , including the following steps:
[0047] (1) Cast the smelted molten steel into an ingot, and the ingot is forged into a billet with a thickness of 28 mm; wherein in terms of mass fraction, the molten steel includes the following components: 0.20% C, 7.80% Mn, 0.40% Cu, 0.20% Cu %Mo, 0.25%Cr, 0.05%Nb, 1.70%Si, 0.001%B, the balance is Fe and inevitable impurities.
[0048] (2) The billet is heated to a complete austenitization temperature of 1200°C and kept for 1 hour to perform austenite homogenization treatment. After completion, it is hot rolled into a steel plate with a thickness of 2.5mm for 6 passes, and the final rolling temperature is 800°C. , cooled to 580 ℃, then coiled, and finally air-cooled to room temperature to obtain a steel coil. The austenite transformation end temperature (A C3 ) is 700°C, and the martensitic transformation start temp...
no. 2 example
[0055] A preparation method of high-strength steel that can be prepared by room temperature Q&P process, refer to figure 1 , including the following steps:
[0056] (1) Cast the smelted molten steel into an ingot, and the ingot is forged into a billet with a thickness of 28 mm; wherein in terms of mass fraction, the molten steel includes the following components: 0.21% C, 8.15% Mn, 0.45% Cu, 0.275% Mo, 0.225% Cr, 0.06% Nb, 1.75% Si, 0.002% B, the balance being Fe and inevitable impurities.
[0057] (2) The billet is heated to a complete austenitization temperature of 1250°C and kept for 0.5h to perform austenite homogenization treatment. °C, cooled to 580 °C, then coiled, and finally air-cooled to room temperature to obtain a steel coil. The austenite transformation end temperature (A C3 ) is 695°C, and the martensitic transformation start temperature Ms is 43.1°C (reference Image 6 ).
[0058] (3) The steel coil is heated to 660° C. again and kept for 5 minutes to perfo...
no. 3 example
[0062] A preparation method of high-strength steel that can be prepared by room temperature Q&P process, refer to figure 1 , including the following steps:
[0063] (1) Cast the smelted molten steel into an ingot, and the ingot is forged into a 28mm thick billet; in terms of mass fraction, the molten steel includes the following components: 0.22% C, 8.5% Mn, 0.5% Cu, 0.25% Mo, 0.3% Cr, 0.07% Nb, 1.8% Si, 0.003% B, the balance being Fe and inevitable impurities.
[0064] (2) The billet is heated to a complete austenitization temperature of 1000°C and kept for 2 hours to perform austenite homogenization treatment. After completion, it is hot rolled into a steel plate with a thickness of 3mm through 4 passes, and the final rolling temperature is 780°C. After cooling to 600 ℃, it is coiled, and finally air-cooled to room temperature to obtain a steel coil. The austenite transformation end temperature (A C3 ) is 695°C, and the martensitic transformation start temperature Ms is 1...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| tensile strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More