AI Article Synopsis
- The automotive industry is evolving to require bodywork materials that not only have high strength but also better forming properties, leading to the development of advanced steels.
- A new grade of V-Nb microalloyed dual-phase steel with a strength of 1200 MPa was created through specific compositional and processing techniques to enhance its performance.
- Experimental results reveal that adjusting aging and annealing temperatures optimizes the steel’s strength-plasticity balance, with the ideal conditions being an annealing temperature of 860 °C and an over-aging temperature of 310 °C.
Article Abstract
With the rapid development of the automotive industry, the requirements for bodywork materials are not only focused on high strength but also on improved forming properties. To develop a new generation of automotive steels with higher strength-plasticity matching, a high elongation 1200 MPa grade V-Nb microalloyed cold-rolled reinforced formable dual-phase steel was developed in this experiment through rational compositional design and precise process machining. The properties of the test steel are improved by varying the over-aging temperature as well as the annealing temperature to achieve a good strength-plasticity balance. The results show that as the aging temperature increases, the tensile strength and yield strength of the test steel decrease, while the elongation continues to increase. At an aging temperature of 310 °C, the steel exhibits not only high strength but also better ductility. As the annealing temperature increases, the tensile strength and yield strength of the test steel initially increase and then decrease, while the elongation continues to increase. When the heat treatment process involves an annealing temperature of 860 °C and an over-aging temperature of 310 °C, the test steel achieves the best strength-plasticity balance.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11477884 | PMC |
| http://dx.doi.org/10.3390/ma17194933 | DOI Listing |
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