Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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FE-Simulation and Measurement of the Residual Stress in Al6061 During T6 Heat Treatment

Al6061-T6 열처리 잔류응력의 유한요소해석 및 측정

  • Ko, Dae-Hoon (School of Mechanical Engineering, Pusan Nat'l Univ.) ;
  • Kim, Tae-Jung (Technical Research Laboratory, Mico C&C Co.) ;
  • Lim, Hak-Jin (Defense Product Technical Research Laboratory, Poongsan Co.) ;
  • Lee, Jung-Min (Defense Product Technical Research Laboratory, Poongsan Co.) ;
  • Kim, Byung-Min (School of Mechanical Engineering, Pusan Nat'l Univ.)
  • Received : 2010.10.12
  • Accepted : 2011.04.28
  • Published : 2011.07.01

Abstract

The purpose of this study is to predict the residual stress in Al6061 during T6 heat treatment. In this study, the variable residual stress in case of the solid solution($530^{\circ}C$, 2h) and artificial ageing($175^{\circ}C$, 9h) of Al6061 subjected to T6 heat treatment is determined at different ageing times. A heat treatment experiment is conducted to determine the heat transfer coefficient, on the basis of which the residual stress during the T6 heat treatment is predicted. In order to take into account the relaxation of residual stress during artificial ageing, a Zener-Wert-Avrami function is used and elasto-plastic nonlinear analysis is conducted through FE-simulation. Further, the residual stress is measured by using the X-ray diffraction(XRD) method, and the result is compared with the result from the FE-simulation. It is found that the residual stress predicted form the FE-simulation is in good agreement with the residual stress measured by using the XRD method.

Keywords

Al6061-T6;Residual Stress;Solid Solution;Artificial Ageing;X-ray Diffraction;FE-Simultaion

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References

  1. Jang, H. S., 1997, "The Handbook of Advanced Aluminum Technology," Hanlimwon.
  2. Kang, D. H., Lee, B. J., Yun, C. B. and Kim, K. W., 2010, "Study on Torsional Strength of Induction-Hardened Axle Shaft," Transactions of the KSME A, Vol. 34, No. 5, pp. 645-649. https://doi.org/10.3795/KSME-A.2010.34.5.645
  3. Rogante, M., Battistella, P. and Rustichelli, F., 2004, "Residual Stress Measurement by Neutron Diffraction in AA6082 Extruded Samples Submitted to Different Quenching Rates," Journal of Alloys and Compounds, Vol. 378, pp.335-338. https://doi.org/10.1016/j.jallcom.2003.12.049
  4. Ian, M., 2004, "Residual Stress Reduction During Quenching of Wrought 7075 Aluminum Alloy," Master's Thesis.
  5. Muammer, K., John, C. and Taylan, A., 2006, "Prediction of Residual Stress in Quenched Aluminum Block and Their Reduction through Cold Working Processed," Journal of Materials Processing Technology, Vol.174, pp. 342-354. https://doi.org/10.1016/j.jmatprotec.2006.02.007
  6. Hossain, S., Truman, C. E., Smith, D. J., Peng, R. L. and Stuhr, U., 2007, "A Study of the Generation and Creep Relaxation of Triaxial Residual Stresses in Stainless Steel," International Journal of Solid and Structure, Vol. 44, pp. 3004-3020. https://doi.org/10.1016/j.ijsolstr.2006.09.001
  7. Juijerm, P. and Altenberger, I., 2006, "Residual Stress Relaxation of Deep-Rolled Al-Mg-Si-Cu Alloy during Cyclic Loading at Elevated Temperature," Scripta Materialia, Vol. 55, pp. 1111-1114. https://doi.org/10.1016/j.scriptamat.2006.08.047
  8. Juijerm, P., Altenberger, I. and Scholtes, B., 2007, "Influence of Ageing on Cyclic Deformation Behavior and Residual Stress of Deep Rolled As-Quenched Aluminum Alloy AA6110," International Journal of Fatigue, Vol. 29, pp. 1374-1382. https://doi.org/10.1016/j.ijfatigue.2006.10.008
  9. Simsir, C. and Gur, C. H., 2008, "3D FEM Simulation of Steel Quenching and Investigation of the Effect of Asymmetric Geometry on Residual Stress Distribution," Journal of Materials Processing Technology, Vol. 207, pp. 211-221. https://doi.org/10.1016/j.jmatprotec.2007.12.074
  10. Berger, M. C. and Gregory, J. K., 1999, "Residual Stress Relaxation in Shot Peened Timetal 21s," Materal Science and Engineering A, Vol. 263, pp. 200-204. https://doi.org/10.1016/S0921-5093(98)01165-4
  11. Alberg, H. and Berglund, D., 2003, "Comparison of Plastic, Viscoplatic and Creep Models when Welding and Stress Relief Heat Treatment," Computer Methods in Applied Mechanics and Engineering, Vol. 192, pp. 5189-5208 https://doi.org/10.1016/j.cma.2003.07.010

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  1. Relief of Residual Stress and Estimation of Heat-Treatment Characteristics for Al6061 Alloy by Cryogenic Heat Treatment vol.35, pp.10, 2011, https://doi.org/10.3795/KSME-A.2011.35.10.1145