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| ADVANCED Q–P–T STEELS WITH ULTRAHIGH STRENGTH–HIGH DUCTILITY |
| RONG Yonghua |
| School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240 |
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Cite this article:
RONG Yonghua. ADVANCED Q–P–T STEELS WITH ULTRAHIGH STRENGTH–HIGH DUCTILITY. Acta Metall Sin, 2011, 47(12): 1483-1489.
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Abstract The quenching–partitioning–tempering (Q–P–T) process was developed from quenching & partitioning (Q&P) process and their difference are first described in this paper. The development of Q–P–T steels from ultrahigh strength to high strength–ductility is summarized. Novel Q–P–T process and conventional quenching–tempering (Q–T) process and their different effects on mechanical properties are compared. The micro–mechanism of the ductility enhancement from retained austenite in unltrahigh strength steels during deformation is emphasized in discussion, which is as a theoretical direction of microstructural design and control on the further development of advanced high strength steels.
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Received: 08 August 2011
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| Fund: Supported by National Natural Science Foundation of China (No.51031001) |
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