Influence of Grain Size on Bake Hardenability for Low Carbon Steel by Internal Friction Method

Abstract:

We presented the comparative influence of two different grain size on bake hardenability for low carbon steel dependent internal friction (IF) spectra. Samples that had a ferrite structure consisting of two peaks and a linear background. Analyzed the grain size and grain boundary length of low carbon steel by EBSD technique. The results showed that: the grain refinement increased the number of initial solute carbon atoms and the effect of movable dislocations pinning by carbon. So grain refinement of low carbon steel could enhance its bake hardening properties.

• Periodical: Applied Mechanics and Materials (Volume 665)
• Pages: 72-75
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.665.72
• Online since: October 2014
• Authors: Wei Juan Li*, Heng Yi Zhang, Hao Fu, Jian Ping Zhang, Xiang Yu Qi
• Keywords: Carbon Atoms, EBSD, Grain Size, Internal Friction, Low Carbon Steel

References

[1] John G, Speer,K. Matlock, Recent developments in Low-Carbon sheet steels, J. JOM. 54, (2002)1543-1851.

DOI: 10.1007/bf02700981

[2] JiangHaitao, KangYonglin, YuHao, Research progress and development of bake hardening steel sheet for automobile, J. Automobile technology and material. Issue3 (2005)1-7.

[3] H. Alihosseine, K. Dehghani, Bake hardening of ultra-fine grained low carbon steel produced by constrained groove pressing, J. Materials Science and Engineering. A549 (2012)157-162.

DOI: 10.1016/j.msea.2012.04.024

[4] B. Soenen, A.K. De, S. Vandeputte, etal, Competition between grain boundary segregation and Cottrell atmosphere formation during static aging in ultra-low carbon bake hardening steels, J. Acta Materialia. 52 (2004)3483-3492.

DOI: 10.1016/j.actamat.2004.03.046

[5] M. Weller, The Snoek relaxation in bcc metals-From steel wire to meteorites, J. Materials Science and Engineering A. 442, (2006)21-30.

DOI: 10.1016/j.msea.2006.02.232

[6] Simeon Ikechukwu, Neife, Erwin Pink, Hein Peter Stuwe, The isothermal precipitation behavior in a low-carbon steel at low temperatures investigated by internal friction, J. Scripta Metallurgica et Materialia. Volume30. (1994)361-366.

DOI: 10.1016/0956-716x(94)90389-1

[7] G. Haneczok, M. Weller, Analysis of internal friction spectra caused by Snoek-type relaxtions, J. Journal of the Less-common Metals. 159, (1990)269-276.

DOI: 10.1016/0022-5088(90)90154-c

[8] M. Weller, G.Y. Li, J.X. Zhang, etal, Accurate determination of activation enthalpies associated with the stress-induced migration of oxygen or nitrogen in tantalum and niobium, J. Acta Metall. 29 (1981)1047-1054.

DOI: 10.1016/0001-6160(81)90056-0

[9] C. A. Wert, Diffusion Coefficient of C in α-Iron, J. Phys. Rev. 79(1950)601.

[10] Charles A. Wert, Precipitation from Solid Solutions of C and N in α-Iron,J. Phys. (1949) 943.

[11] C. Wert, J. Marx, A new method for determining the heat of activation for relaxation processes, J. Acta Metall. 1, (1953)113-115.

DOI: 10.1016/0001-6160(53)90047-9

[12] R. Bagramov, D. Mari, W. Benoit, Internal friction in a martensitic high-carbon steel, J. Philosophical Magazine A. 81(2001)2797-2808.

DOI: 10.1080/01418610108217165