The Hot Deformation Behavior and Hot Processing Map of CL60 Rail Wheel Steel

Abstract:

The hot deformation behavior of CL60 rail wheel steel has been studied by employing both processing maps and microstructural observations. Tests are performed at temperatures of 800—1100°C and strain rates of 0.1s-1—5s-1 and the flow stress data obtained from the tests are used to develop processing maps. The microstructural evolution of deformed samples is also examined on the basis of optical microscopic observations. The result indicates that under experimental conditions this alloy shows dynamic recrystallization(RDX) characteristics during hot compression deformation. Both deformation temperatures and strain rates have obvious influence on flow stress and its corresponding peak strain, which increase gradually with decreasing temperature and increasing strain rate. RDX occurred at higher temperature and lower strain rate.

• Periodical: Advanced Materials Research (Volumes 602-604)
• Pages: 2006-2010
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.602-604.2006
• Online since: December 2012
• Authors: Fei Zhao, Yan Yan, Yong Hai Ren
• Keywords: CL60 Rail Wheel Steel, Deformation Equations, Hot Deformation, Processing Map, True Strain-Stress Curves

References

[1] Ferguson D,Chen W,Bonesteel T,et al. Materials Science and Engineering A, 2009,499:329-332.

[2] Lee B H, Reddy N S, Yeom J T, et al. J Mater Process Techol, 2007, 187/188: 766-769.

[3] ZHAN Mei -yan, CHEN Zhen -hua, ZHANG Hui, et al. Mech Res Commun,2006, 33(4): 508-514.

[4] Fensei F. SEMI Technology Symposium,1988, 88.

[5] S. Ramanathan, R. Karthikeyan, G. Ganasen,et al.Materials Science and Engineering A 441 (2006) 321–325.