Constitutive Relationship of TA15 Alloy and its Application in the Hammer Forging Process Simulation

Abstract:

A Kumar-type constitutive relationship of TA15 alloy was investigated by non-linear regression analysis, and the equations were established based on test data from hot process simulator. Applying this constitutive equation in commercial FEM software of SFTC/Deform, the hammer forging process of TA15 alloy beam was simulated, meanwhile the final shape of forging piece, the hammering times, the height reduction variation and the maximal effective stress variation along with forging time were predicted. The hammer forging test was carried out and the test results showed that the simulation based on Kumar-type constitutive relationship meet the practical need to a great extent.

• Periodical: Advanced Materials Research (Volumes 102-104)
• Pages: 516-520
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.102-104.516
• Online since: March 2010
• Authors: Guo Zheng Quan, Ying Tong, Yan Wei Zhang, Jie Zhou
• Keywords: Beam Forge, Constitutive Equation, Hammer Forging, TA15 Alloy

References

[1] Lee.W. -Sh., Lin. Ch-F, High-temperature deformation behaviour of Ti6Al4V alloy evaluated by high strain-rate compression tests, Journal of Materials Processing Technology, Vol. 75. n3(1998), pp.127-136.

DOI: 10.1016/s0924-0136(97)00302-6

[2] R. Ding, Z.X. Guo, A. Wilson, Microstructural evolution of a Ti-6Al-4V alloy during thermomechanical processing, Materials Science and Engineering A, Vol. 327. n2(2002), pp.233-245.

DOI: 10.1016/s0921-5093(01)01531-3

[3] XU Wen-chen, SHAH De-bin，YANG Guo-ping, Lv Yan, Flow behavior and microstructure evolution during hot compression of TA 15 titanium alloy, Trans. Nonferrous Met. Soc. China, Vol. 16. s3(2006), p.2066-(2071).

[4] Akhtar S. Khan, Rehan Kazmi, Babak Farrokh, Multiaxial and non-proportional loading responses, anisotropy and modeling of Ti-6Al-4V titanium alloy over wide ranges of strain rates and temperatures, International Journal of Plasticity, Vol. 23. n6(2007).

DOI: 10.1016/j.ijplas.2006.08.006

[5] N.G. Jones, R.J. Dashwood, D. Dye, M. Jackson, Thermomechanical processing of Ti-5Al-5Mo-5V-3Cr, Materials Science and Engineering A, Vol. 490. n1(2008), pp.369-377.

DOI: 10.1016/j.msea.2008.01.055

[6] L.X. Li, K.P. Rao, Y. Lou, D.S. Peng, A study on hot extrusion of Ti-6Al-4V using simulations and experiments, International Journal of Mechanical Sciences, Vol. 44. n12(2002), pp.2415-2425.

DOI: 10.1016/s0020-7403(02)00173-x

[7] Xiaoli Li, Miaoquan Li, FE simulation for the forging process of TC6 alloy disc utilizing a microstructural model, Materials Characterization, Vol. 55. n5(2005), pp.362-370.

DOI: 10.1016/j.matchar.2005.07.010

[8] P. Vo, M. Jahazi, S. Yue, P. Bocher, Flow stress prediction during hot working of near-α titanium alloys, Materials Science and Engineering A, Vol. 447. n2(2007), pp.99-110.

DOI: 10.1016/j.msea.2006.10.032

[9] A. Majorell, S. Srivatsa, R.C. Picu, Mechanical behavior of Ti-6Al-4V at high and moderate temperatures-Part I: Experimental results, Materials Science and Engineering A, Vol. 326. n2(2002), pp.297-305.

DOI: 10.1016/s0921-5093(01)01507-6

[10] S. Bruschi, S. Poggio, F. Quadrini, M.E. Tata, Workability of Ti-6Al-4V alloy at high temperatures and strain rates, Materials letters, Vol. 58. n28(2004), pp.3622-3629.

DOI: 10.1016/j.matlet.2004.06.058

[11] N.S. Reddy, You Hwan Lee, Chan Hee Park, Chong Soo Lee, Prediction of flow stress in Ti-6Al-4V alloy with an equiaxed α+β microstructure by artificial neural networks, Materials Science and Engineering A, Vol. 492. n2(2008), pp.276-282.

DOI: 10.1016/j.msea.2008.03.030