Influences of Strain Rate and Deformation Temperature on Flow Stress and Dynamic Recrystalliazation of Heat Resistant Steel P91

Xue Qin Jin; Da Sen Bi; Jian Zhang; Xiao Lan Wang; Jian Hua Song; Zhi Hua Wang

doi:10.4028/www.scientific.net/AMR.217-218.958

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 217-218Influences of Strain Rate and Deformation...

Influences of Strain Rate and Deformation Temperature on Flow Stress and Dynamic Recrystalliazation of Heat Resistant Steel P91

Abstract:

In power station big caliber thick wall seamless tube typical steel P91for example, The hot deformation behavior and heat flow stress-strain curve of the heat resistant steel P91was investigated with a compression test on Gleeble3500 simulator at a temperature range of 1050°C～1200°C and strain rate range of 10-4～5s-1. The test curve shows that P91 materials have the dynamic recrystallization and recovery behavior in high temperature and deformation. With the rise of temperature and strain rate of decreased, flow stress is lower and the dynamic recrystallization phenomenon is easier to occur. By metalloscope observed, in the high temperature and low strain rate conditions, the dynamic recrystallization area and new nucleation grain size are larger, and microstructure is more uniformly distributed.

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Periodical:

Advanced Materials Research (Volumes 217-218)

Pages:

958-963

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.217-218.958

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Online since:

March 2011

Authors:

Xue Qin Jin, Da Sen Bi, Jian Zhang, Xiao Lan Wang, Jian Hua Song, Zhi Hua Wang

Keywords:

Dynamic Recrystallization (DRX), Flow Stress, Heat Resistant Steel P91, Hot Simulation

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References

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