Simulation and Investigation of Mechanical and Geometrical Properties of St/CP-Titanium Bimetal Sheet during the Single Point Incremental Forming Process

Document Type : Research Paper

Authors

Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran.

Abstract

In this study, the incremental forming of explosively welded low carbon steel-commercially pure titanium bilayer sheet has been experimentally and numerically investigated. For this purpose, at first a finite element based analysis was proposed to predict forming force and thickness distribution to form this material by such process, that showed good agreements with the experimental results. Then, to investigate the effect of vertical step down (ΔZ) parameter on the properties of the workpiece, mechanical tests and microstructural studies were performed on the formed specimens. The results showed that increasing the vertical step down (ΔZ), hardness and tensile properties of the specimens increased but the thickness reduction in the wall of the pyramidal specimens increased and also the surface quality decreased. In addition, microstructural studies showed that increasing the vertical step down from 0.1 to 0.3, the grain structure transformed from an equiaxed state to a fibrous state and led to formation of texture in the microstructure, which mechanical properties improvements can be attributed to this issue. Therefore, if the surface quality of the inside wall of the specimen won’t be important, with an increase in the amount of ΔZ besides reduction of process time, the mechanical properties of the specimen will be improved.

Keywords


[1] A. Attanasio, E. Ceretti, C. Giardini, Optimization of tool path in two points incremental forming, Journal of Materials Processing Technology 177 (2006) 409-412.
[2] K. Kitazawa, Incremental sheet metal stretch-expanding with CNC machine tools, Advanced Technology of Plasticity.Beijing: International Academic Publisher, (1993) 1899-1904.
[3] M. Matsubara, S. Tanaka, T. Nakamura, Development of incremental sheet metal forming system using elastic tools: Principle of forming process and formation of some fundamentally curved shapes, JSME International Journal, 39(1996) 156-163.
[4] W.C. Emmens, G. Sebastiani, A.H. van den Booggard, The technology of Incremental Sheet Forming – A brief review of the history, Journal of Materials Processing Technology 210 (2010) 981–997.
[5] E. Hagan, J. Jeswiet, A review of conventional and modern single-point sheet metal forming methods, Journal of Engineering Manufacture, 217 ( 2003) 213-225.
[6] Y.H. Kim, J.J. Park, Effect of process parameters on formability in incremental forming of sheet metal, Journal of Materials Processing Technology 130–131(2002) 42–46.
[7] K. Jackson, J. Allwood, The mechanics of incremental sheet forming, Journal of Materials Processing Technology 2 0 9 (2009) 1158–1174.
[8] Y. Li, Z. Liu , H. Lu, Efficient force prediction for incremental sheet forming and experimental validation, The International Journal of Advanced Manufacturing Technology, 73 ( 2014 ) 571–587.
[9] C. Henrard , C. Bouffioux , P. Eyckens , H. Sol, Forming forces in single point incremental forming: prediction by finite element simulations, validation and sensitivity, 47 ( 2011 ) 573–590.
[10] G. Hussain, G. Lin, N. Hayat, A new parameter and its effect on the formability in single point incremental forming: A fundamental investigation, Journal of Mechanical Science and Technology 24 (2010) 1617-1621.
[11] Z. Fu, J. Mo, F. Han, P. Gong, Tool path correction algorithm for single-point incremental forming of sheet metal, The International Journal of Advanced Manufacturing Technology 64 ( 2013 ) 1239–1248.
[12] G. Hussaina, L. Gaoa, N. Hayatb, Xu. Zirana, A new formability indicator in single point incremental forming, Journal of Materials Processing Technology, 209 (2009) 4237–4242.
[13] G. Ambrogio, F. Gagliardi, S. Bruschi, L. Filice, On the high-speed single point incremental forming of titanium alloys, CIRP Annals - Manufacturing Technology 62 (2013) 243–246.
[14] S. Gatea, H. Ou, G. McCartney, Review on the influence of process parameters in incremental sheet forming, The International Journal of Advanced Manufacturing Technology, 87 (2016) 479–499.
[15] D. M. Neto, J. M. P. Martins, M. C. Oliveira, L. F. Menezes, J. L. Alves, Evaluation of strain and stress states in the single point incremental forming process, The International Journal of Advanced Manufacturing Technology 85 (2016) 521–534.
[16] Y. Li, William J. T. Daniel, Paul A. Meehan, Deformation analysis in single-point incremental forming through finite element simulation, The International Journal of Advanced Manufacturing Technology 88 (2017) 255–267.
[17] M. Honarpisheh, M. J. Abdolhoseini, S. Amini, Experimental and numerical investigation of the hot incremental forming of Ti-6Al-4V sheet using electrical current. The International Journal of Advanced Manufacturing Technology 83 (2016) 2027–2037.
[18] S. Amini, A. Hosseinpour Gollo, H. Paktinat, An investigation of conventional and ultrasonic-assisted incremental forming of annealed AA1050 sheet. The International Journal of Advanced Manufacturing Technology 90 (2017) 1569–1578.
[19] M. Vahdati, R. Mahdavinejad, S. Amini, Investigation of the ultrasonic vibration effect in incremental sheet metal forming process, Journal of Engineering Manufacture 231 (2015) 971–982.
[20] A. Formisano, L. Boccarusso, F. Capece Minutolo, L. Carrino, M. Durante, A. Langella, Negative and positive incremental forming: Comparison by geometrical, experimental, and FEM considerations, Materials and Manufacturing Processes 32 (2017) 530-536.
[21] K. A. Al-Ghamdi, G. Hussain, SPIF of Cu/Steel Clad Sheet, Annealing Effect on Bond Force and Formability, Materials and Manufacturing Processes, 31 (2016) 758-763.
[22] H. T. Jiang, X. Q. Yan, J. X. Liu, X. G. Duan, Effect of heat treatment on microstructure and mechanical property of Ti−steel explosive-rolling clad plate, Trans. Nonferrous Met. Soc. China 24 (2014) 697−704.
[23] N. Kahraman, B. Gulenc, Metallurgical and Corrosion Properties of Explosively Welded Ti6Al4V/Low Carbon Steel Clad, Journal of Material Science and Technology 21 (2005).
[24] M. Honarpisheh, J. Niksokhan, F. Nazari, Investigation of the effects of cold rolling on the mechanical properties of explosively-welded Al/St/Al multilayer sheet, Metallurgical Research & Technology 113.1 (2016): 105.
[25] M. Sedighi, M. Honarpisheh. Investigation of cold rolling influence on near surface residual stress distribution in explosive welded multilayer, Strength of Materials 44.6 (2012): 693-698.
[26] A. Petek, K. Kuzman, B. Suhač, Autonomous on-line system for fracture identification at incremental sheet forming. Cirp Ann Manuf Techn 58 (2009) 283-286.
[27] G. Ambrogio, L. Filice, F. Micari, A force measuring based strategy for failure prevention in incremental forming, Journal of Materials Processing Technology 177 (2006) 413-416.
[28] J. Duflou , Y. Tunc¸kol, A. Szekeres, P. Vanherck, Experimental study on force measurements for single point incremental forming, Journal of Materials Processing Technology 189 (2007) 65–72.
[29] H. Arfa, R. Bahloul, H. Bel Hadj Salah, Finite element modelling and experimental investigation of single point incremental forming process of aluminum sheets: influence of process parameters on punch force monitoring and on mechanical and geometrical quality of parts, International Journal of Material Forming 6 (2013) 483–510.
[30] G. Ambrogio, L. Filice, F. Gagliardi, F. Micari, Sheet thinning prediction in single point incremental forming, sheet metal 2005-proceeding of the 11th international conference. Erlangen-Nuremberg, Trans Tech Publications ltd, (2005) 479-486.