Thermo-Elasto-Plastic Analysis of Pearlitic Transformation Plasticity under Combined Bending-Tensile Loading

Abstract:

In a previous study, we showed the anisotropy of plastic strain due to the pearlitic transformation and proposed a hydrostatic pressure-dependent constitutive equation to describe this phenomenon. In the present study, we assess the validity of this model using a bending-tensile loading system to experimentally and numerically analyze and characterize the pearlitic transformation plasticity. First, the maximum bending deflections due to the austenite-pearlite transformation were measured under different loadings and then transformation-plasticity coefficients were determined. Furthermore, as was done for bending-tensile loading tests, the pearlitic transformation plasticity was simulated using Abaqus Standard under the same austenitization and loading conditions as in experiments, and the calculated results for pearlitic-transformation plastic deformation are compared with the experimental results. The results show that the transformation plastic deflection due to the pearlitic transformation decreases with increasing applied tensile stress. In addition, this behavior can be described by a hydrostatic pressure-dependent model in large-deformation theory.

• Periodical: Key Engineering Materials (Volume 725)
• Pages: 328-333
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.725.328
• Online since: December 2016
• Authors: M. Arif Hamdam, Kazuki Takahashi, Hayata Tateoka, Kenichi Oshita*, Shigeru Nagaki
• Keywords: Austenite, Bending Deformation, Finite Element Analysis (FEA), Pearlite, Transformation Plasticity, Transformation Plasticity Coefficient

References

[1] E. Gautier, A. Simon and G. Beak, Deformation of eutectoid steel during pearlitic transformation under tensile stress, Proc. of the 5th Int. Conference on Strength of Metals and Alloys, 2 (1979), 867–873.

DOI: 10.1016/b978-1-4832-8412-5.50146-6

[2] M. Coret, S. Calloch and A. Combescure, Experimental study of the phase transformation plasticity of 16MND5 low carbon steel under multiaxial loading, Int. J. Plast., 18 (2002), 1707–1727.

DOI: 10.1016/s0749-6419(01)00067-5

[3] L. Taleb, N. Cavallo and F. Waeckel, Experimental analysis of transformation Plasticity, Int. J. Plast., 17 (2001), 1–20.

[4] T. Otsuka, and T. Inoue, Identification of transformation plasticity coefficient by four-point bending tests and some data under pearlite transformation, J. JSMS, 52–10 (2003), 1198–1203.

DOI: 10.2472/jsms.52.1198

[5] K. Oshita, S. Nagaki, S. Asaoka and K. Morozumi, Determination of coefficient for transformation plasticity in terms of three-point bending system, Int. J. JSME, A, 48–1 (2005), 1–6.

DOI: 10.1299/jsmea.48.1

[6] M.A. Hamdam, S. Nagaki and K. Oshita, Experimental study on transformation plasticity in terms of three-point bending system, Key Eng. Mater., 626 (2014), 408–413.

DOI: 10.4028/www.scientific.net/kem.626.408

[7] N. Hikida, Y. Yamamoto, K. Oshita, and S. Nagaki, Experimental investigation of transformation plastic behavior under tensile-compressive-torsional stress in Steel, Key Eng. Mater., 626 (2014), 426–431.

DOI: 10.4028/www.scientific.net/kem.626.426

[8] G.W. Greenwood and R.H. Johnson, The deformation of metals under small stresses during phase transformations, Proc. Roy. Soc. Lond. A283 (1965), 403–422.

DOI: 10.1098/rspa.1965.0029

[9] D.C. Drucker and W. Prager, Soil mechanics and plastic analysis for limit design, Quarterly of Applied Mathematics, 10–2 (1952), 157–165.

DOI: 10.1090/qam/48291

[10] MATEQ, Ver. 1. 1 (2002), JSMS, Japan.