Construction of Flow Stress Constitutive Equation for 3Cr1Mo0.25V Steel

Abstract:

The flow stress change of 3Cr1Mo0.25V steel was researched in this paper through hot compression tests performed in a temperature range from 800 to 900oC and with a strain rate variation from 0.01 to 10s-1. Flow stress constitutive equation was constructed according to true stress-strain curves of 3Cr1Mo0.25V steel. Results indicate that the dynamic recovery is the dynamic softening mechanism of 3Cr1Mo0.25V steel. The flow stress increases with increasing strain rates and decreases with increasing temperature. The rheological behavior of 3Cr1Mo0.25V steel can be characterized by the parameter of Zener-Hollomon in a high temperature range. As for 3Cr1Mo0.25V steel, the activation energy of Q evaluated by the linear regression is about 142.9 kJ/mol.

• Periodical: Advanced Materials Research (Volume 567)
• Pages: 244-249
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.567.244
• Online since: September 2012
• Authors: Yu Hua Zhang, Guang Yu Tan, Shu Cai Yang
• Keywords: 3Cr1Mo0.25V Steel, Constitutive Equation, Flow Stress

References

[1] Qiu E. C. Development of domestic 3Cr-1Mo-1/4V steel hydrogenated reactor. Petro-Chemical Equipment Technology. 2000, 21(4): 36-40, 44.

[2] Xiao F. R., Hu Y., Zhang L. X., et al. Microstructure and mechanical properties of steel 3Cr-1Mo-1/4V. Iron and Steel. 2001, 36(10): 47-50, 74.

[3] Li J. L. Refining of petroleum and hot wall hydrogenated reactor. CFHI Technology. 1990, (3): 77-83.

[4] Na Y. S., Yeom J. T., Park N. K., et al. Simulation of microstructures for Alloy 718 blade forging using 3D FEM simulator[J]. Journal of Materials Processing Technology. 2003, 141(3): 337-342.

DOI: 10.1016/s0924-0136(03)00285-1

[5] Yang Y. H., Liu D., He Z. Y., Luo Z. J. Optimization of Preform Shapes by RSM and FEM to Improve Deformation Homogeneity in Aerospace Forgings. Chinese Journal of Aeronautics. 2010, 23(2): 260-267.

DOI: 10.1016/s1000-9361(09)60214-4

[6] Khaleed H. M. T., Samad Z., Othman A. R., et al. Work-piece optimization and thermal analysis for flash-less cold forging of AUV propeller hubs-FEM simulation and experiment. Journal of Manufacturing Processes. 2011, 13(1): 41-49.

DOI: 10.1016/j.jmapro.2010.10.003

[7] Zhang W. H., Wang S. H., Xu F. S. Properties of 3Cr-1Mo-0. 25V steel forging for hydrogenation reactor. Pressure Vessel Technology. 2001, 18(S): 45-48.

[8] Nam Y. H., Kim Y. II, Nahm S. H. Evaluation of fracture appearance transition temperature to forged 3Cr–1Mo–0. 25V steel using ultrasonic characteristics. Materials Letters. 2003, 60(29-30): 3577-3581.

DOI: 10.1016/j.matlet.2006.03.063

[9] Moro L., Gonzalez G., Brizuela G., et al. Influence of chromium and vanadium in the mechanical resistance of steels. Materials Chemistry and Physics. 2008, 109(2-3): 212-216.

DOI: 10.1016/j.matchemphys.2007.11.030

[10] Zhou J. M., Qi L. H., Chen G. D. Investigation on the constitutive relationship of materials forming in high temperature. Mechanical Science and Technology. 2005, 24(2): 212-216.

[11] Shi H., Mclaren A. J., Sellars C. M., et al. Constitutive equations for high temperature flow stress of aluminum alloys. Material Science and Engineering. 1997, 13(3): 210-216.

DOI: 10.1179/mst.1997.13.3.210

[12] Zener C., Hollomon J. H. Effect of strain rate upon the plastic flow of steel. Journal of Applied Geophysics. 1944, 15(1): 22-32.

DOI: 10.1063/1.1707363