The Numerical Modeling to Study the Multi-Pass Friction Stir Processing on Magnesium Casting Alloy AZ91

Subject Areas : optimization and simulation

hoda agha amini fashami ¹ , Mohammad Hoseinpour Gollo ² , Nasrollah Bani Mostafa Arab ³ , Bahram Nami ⁴

1 - Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Iran
2 - Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Iran
3 - Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Iran
4 - Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Iran

Received: 2019-08-10 Accepted : 2019-12-01 Published : 2019-12-01

Keywords: Finite Element, AZ91, Simulation, FSP, Mechanical Properties,

Abstract :

In this research, the multi-pass friction stir processing on AZ91 alloy has been simulated with the three-dimensional numerical modeling based on the ABAQUS/ Explicit. This simulation involves the Johnson-Cook models for defining the material behavior during this intense plastic deformation and investing the fracture criterion. Friction stir processing is a complex process that includes several issues such as high strain rate deformation, microstructure evolution, the asymmetric flow of material, and heat. Therefore, the modeling of this process is challenging. This model simulates the tool plunging and stirring phases in the two-pass process. In this paper, to prevent too much damage in the elements during processing, the Arbitrary Lagrangian-Eulerian technique for automatically remeshing of distorted elements has been used. This work shows that the numerical modeling can be an efficient method to study the effect of process parameters on the thermal evolution and the stress distribution. The thermal model was calibrated using the experimental results from the previous works. This model can predict the transient temperature distribution and residual stress field during FSP on AZ91. The results show that the maximum temperature in the advancing side is more than that in the retreating side. In addition, numerical results show that at the end-position of the process, the tool during the lift-up leaves the keyhole region in a compressive stress state.

References:

[1]  Abaqus User Manual, Version 6.3, 2002 (Hibbitt, Karlsson & Sorensen, Pawtucket, Rhode Island).

[2]  de Dear, R., Brager, G., Thermal Comfort in Naturally Ventilated Buildings: Revisions to ASHRAE Standard 55, Energy and Buildings, Vol. 34, No. 6, 2002, pp. 549–561.

[3]  Tutunchilar, S., Haghpanahi, M., Besharati Givi, M. K., and et al, Simulation of Material Flow in Friction Stir Processing of a Cast Al-Si alloy, Mater Des, Vol. 40, 2012, pp. 415 -426.

[4]  Rahul, J., Surjya, K., and Pal, S., Finite Element Simulation of Pin Shape Influence On Material Flow Forces in Friction Stir Welding, International Journal of Advanced Manufacturing Technology, Vol. 38, 2017, pp. 285–295.

[5]  Assidi, M., Fourment, L., Guerdoux, S., and Nelson, T., Friction Model for Friction Stir Welding Process Simulation: Calibrations from Welding Experiments, International Journal of Machine Tools and Manufacture, Vol. 50, 2010, pp. 143 – 155.

[6]  Chen, C., Kovacevic, R., Finite Element Modelling of Friction Stir Welding—Thermal and Thermomechanical Analysis, International Journal of Machine Tools and Manufacture, Vol. 43, 2003, pp. 1319- 1326.

[7]  Schmidt, H., Hattel, J., and Wert, J., An Analytical Model for The Heat Generation in Friction Stir Welding, Modelling and Simulation in Materials Science and Engineering, Vol. 12, 2003, pp. 143.

[8]  Darras, B. M., A Model to Predict the Resulting Grain Size of Friction-Stir-Processed Az31 Magnesium Alloy, Journal of Materials Engineering and Performance, Vol. 21, 2012, pp. 1243-1248.

[9]  Aljoaba, S., Dillon, O., Khraisheh, M., and Jawahir, I., Modelling the Effects of Coolant Application in Friction Stir Processing On Material Microstructure Using 3d Cfd Analysis, Journal of Materials Engineering and Performance, Vol. 21, 2012, pp. 1141-1150.

[10]             Yu, Z., Zhang, W., Choo, H., and Feng, Z., Transient Heat and Material Flow Modelling of Friction Stir Processing of Magnesium Alloy Using Threaded Tool, Metallurgical and Materials Transactions A, Vol. 43, 2012, pp. 724-737.

[11]             Albakri, A., Mansoor, B., Nassar, H., and Khraisheh, M., Thermo-Mechanical and Metallurgical Aspects in Friction Stir Processing of Az31 Mg Alloy—A Numerical and Experimental Investigation, Journal of Materials Processing Technology, Vol. 213, 2013, pp. 279-290.

[12]             Asadi, P., Mahdavinejad, R., and Tutunchilar, S., Simulation and experimental investigation of FSP of AZ91 magnesium alloy Materials Science and Engineering: A 528, 2001, pp. 6469-6477.

[13]             Frigaard, Grong, and Middling, O. T., A Process Model for Friction Stir Welding of Age Hardening Aluminium Alloys, Metal Mater Trans, 2001, Vol. 32, pp. 1189–200.

[14]             Khandkar, M. Z. H., Khan, J. A., Reynolds, A. P., and Sutton, M. A., Predicting Residual Thermal Stresses in Friction Stir Welded Metals, J Mater Process Technol, Vol. 174, 2006, pp. 195–203.

[15]             Chao, Y. J., Liu, S., and Chien, CH., Friction Stir Welding of Al 6061-T6 Thick Plates: Part Ii – Numerical Modelling of the Thermal and Heat Transfer Phenomena, Journal of the Chinese Institute of Engineers, Vol. 31, 2008, pp. 769–779.

[16]             Ulysse, P., Three-Dimensional Modelling of the Friction-Stir-Welding Process, International Journal of Machine Tools and Manufacture, Vol. 42, 2002, pp. 1549–1557.

[17]             Shercliff, H. R., Colegrove, P. A., Modelling of Friction Stir Welding. in: Cerjak h, Editor. Mathematical Modelling of Weld Phenomena, London: Maney, Vol. 6, 2002, pp. 927–974.

[18]             Tutunchilar, S., Haghpanahi, M., Besharati Givi, M. K., Asadi, P., and Bahemmat, P., Simulation of Material Flow in Friction Stir Processing of a Cast Al-Si Alloy, Mater Des, Vol. 40, 2012, 415–426.

[19]             Chiumenti, M., Cervera, M., Agelet de Saracibar, C., Dialami, N., Numerical Modelling of Friction Stir Welding Process, Computer Methods in Applied Mechanics and Engineering, Vol. 254, 2013, pp. 353–369.

[20]             Dialami, N., Chiumenti, M., Cervera, M., Agelet De Saracibar, C., and Ponthot, J. P., Material Flow Visualization in Friction Stir Welding Via Particle Tracing, International Journal of Material Forming, Vol. 8, 2015, pp. 167–181.

[21]             Al-Badour, F., Merah, N., Shuaib, A., and Bazoune, A., Thermomechanical Finite Element Model of Friction Stir Welding of Dissimilar Alloys, International Journal of Advanced Manufacturing Technology, Vol. 72, No. 5–8, 2014, pp. 607–617.

[22]             Cao, J. Y., Wang, M., Kong, L., Yin, Y. H., and Guo, L. J., Numerical Modelling and Experimental Investigation of Material Flow in Friction Spot Welding of Al 6061-T6, International Journal of Advanced Manufacturing Technology, Vol. 89, No. 5–8, 2017, pp. 2129–2139.

[23]             Ajri, A., Shin, Y. C., Investigation on the Effects of Process Parameters On Defect Formation in Friction Stir Welded Samples Via Predictive Numerical Modelling and Experiments, Journal of Manufacturing Science and Engineering, Vol. 139, No. 11, 2017, pp. 111009.

[24]             Ansari, M. A., Samanta, A., Abdi Behnagh, R., and Ding, H., An Efficient Coupled Eulerian-Lagrangian Finite Element Model, 2018.

[25]             Xiao, J., Raza Ahmad, I., and D. W. Shu, Dynamic Behaviour and Constitutive Modelling of Magnesium Alloys Az91d and Az31b Under High Strain Rate Compressive Loading, Modern Physics Letters B, Vol. 28, No. 8, 2014, pp. 1450063 (9 pages).

[26]             Bazhenov, V. E., Petrova, A. V., Koltygin, A. V., and Tselovalnik Yu, V., Determination of Heat Transfer Coefficient Between Az91 Magnesium Alloy Casting and No-Bake Mold, Tsvetnye Metally, 2017.

[27]             Asadi, P., Besharati Givi, M., and Akbari, M., Microstructural Simulation of Friction Stir Welding Using a Cellular Automaton Method: A Microstructure Prediction of Az91 Magnesium Alloy, M. International Journal of Machine Tools and Manufacture, Vol. 10, 2015, pp. 20.

[28]             Soundararajan, V., Thermo-Mechanical and Microstructural Issues in Joining Similar and Dissimilar Metals by Friction Stir Welding, Proquest, 2011, pp. 1109.