Ferrite-Martensite Dual-Phase Steel Produced by a Modified Quenching and Partitioning Process

Abstract:

One industrially C-Mn steel was studied in the present work. The Mn pre-partitioning process during continuous annealing was used. The results showed that the stability of retained austenite is increased because of the Mn pre-partitioning. The amount of retained austenite was about 5%, when increase the partition time to 100s. With the increase of the partition time, the amount of retained austenite increases, the tensile strength decreases, the yield strength and elongation both increase. Compared with quenching and tempering (Q&T) process, the tested steel after pre-partitioning quenching and partitioning (PQ&P) process has higher uniform elongation and the product of strength and elongation (UTS×TEL).

• Periodical: Materials Science Forum (Volume 941)
• Pages: 251-256
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.941.251
• Online since: December 2018
• Authors: Hong Shuang Di*, Yong Gang Deng, Jian Ping Li
• Keywords: Dual-Phase Steel, Mechanical Properties, Microstructure, Partitioning, Quenching, Retained Austenite

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