Effect of partitioning time on one-step quenching and partitioning steel

The microstructure and mechanical properties of one-step quenching and partitioning (Q&P) steel with different partitioning time were analyzed. The results shows that the elongation rate rises, tensile strength decreases, the yield strength first declines and then increases with the increasing p...

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Bibliographic Details
Published in:Journal of physics. Conference series 2022-11, Vol.2368 (1), p.12024
Main Authors: Gu, Xingli, Lin, Chunqing, Liu, Rendong, Guo, Jinyu, Deng, Peng
Format: Article
Language:English
Subjects:
Cementite
Elongation
High strength steels
Interrupted quenching
Mechanical properties
Microstructure
Partitioning
Physics
Tensile strength
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Summary:The microstructure and mechanical properties of one-step quenching and partitioning (Q&P) steel with different partitioning time were analyzed. The results shows that the elongation rate rises, tensile strength decreases, the yield strength first declines and then increases with the increasing partitioning time (PT). An optimal combination of strength and ductility is obtained when the samples are partitioned at 2000 s, and the corresponding tensile strength, elongation, and product of strength and elongation are 1022 MPa, 25.1% and 25652 MPa•%, respectively. Besides, no cementite is found in the microstructures.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2368/1/012024