A new approach for achieving excellent strain homogeneity in tubular channel angular pressing (TCAP) process

Journal of Advanced Materials and Processing

مقاله 2، دوره 2، شماره 1، اردیبهشت 2014، صفحه 3-12   

نوع مقاله: Research Paper

نویسندگان

Ghader Faraji^* ؛ F. Reshadi؛ M. Baniasadia

Department of mechanical Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran.

چکیده

Tubular channel angular pressing (TCAP) is a recently invented novel severe plastic deformation technique for producing UFG tubes. Plastic deformation analysis using the finite element method (FEM) was carried out to investigate the effects of trapezoidal channel geometry on strain inhomogeneity index (SII), strain level and required load compared to previously used channel geometries. The results showed that SII is decreased to 0.003 in the case of trapezoidal channel while they are 0.13 and 0.24 in the cases of semicircular and triangular channel types, respectively. It means that excellent strain homogeneity is achieved in TCAP processing using trapezoidal channel geometry. The required load for the trapezoidal channel was 41% lower than that for the triangular channel but it is almost the same for semicircular channel. From the point of view of better strain homogeneity and needing lower process load, TCAP processing using trapezoidal channel is an excellent technique for producing UFG tubes.

کلیدواژه‌ها

Tubular channel angular pressing؛ Trapezoidal Channel geometry؛ Finite element method؛ Plastic Deformation

مراجع

1. R. Z. Valiev, R. K. Islamgaliev, I. V. Alexandrov, “Bulk nanostructured materials from severe plastic deformation”. Progress in Materials Science 45, 2000, pp. 103.
2. R. Z. Valiev, T. G. Langdon, “Principles of equal-channel angular pressing as a processing tool for grain refinement”. Progress in Materials Science 51, 2006, pp. 881.
3. F. Djavanroodi, M. Ebrahimi, “Effect of die channel angle, friction and back pressure in the equal channel angular pressing using 3D finite element simulation”. Materials Science and Engineering: A 527, 2010, pp. 1230.
4. A. P. Zhilyaev, T. G. Langdon, “Using high-pressure torsion for metal processing: Fundamentals and applications”, Progress in Materials Science 53, 2008, pp. 893.
5. Y. Saito, H. Utsunomiya,N. Tsuji, T. Sakai, “Novel ultra-high straining process for bulk materials—development of the accumulative roll-bonding (ARB) process”, Acta Materialia 47, 1999, pp. 579.
6. A. Azimi, S. Tutunchilar, G. Faraji, M. Besharati Givi, “Mechanical Properties and Microstructural Evolution during Multi-Pass ECAR of Al 1100-O Alloy”, Materials & Design, 2012.
7. A. Babaei, G. Faraji, M. Mashhadi, M. Hamdi, “Repetitive forging (RF) using inclined punches as a new bulk severe plastic deformation method”, Materials Science and Engineering: A, 2012.
8. G. Faraji, H. Jafarzadeh, “Accumulative Torsion Back (ATB) Processing as a New Plastic Deformation Technique”, Materials and Manufacturing Processes 27, 2012, 
   pp. 507.
9. N. Pardis, R. Ebrahimi, “Deformation behavior in Simple Shear Extrusion (SSE) as a new severe plastic deformation technique”, Materials Science and Engineering: A 527, 2009, pp. 355.
10. N. Pardis, R. Ebrahimi, “Different processing routes for deformation via simple shear extrusion (SSE)”, Materials Science and Engineering: A 527, 2010, pp. 6153.
11. N. Pardis, B. Talebanpour, R. Ebrahimi, S. Zomorodian, “Cyclic expansion-extrusion (CEE): A modified counterpart of cyclic extrusion-compression (CEC)”, Materials Science and Engineering: A 528, 2011, 
    pp. 7537.
12. M. Shahbaz, N. Pardis, R. Ebrahimi, B. Talebanpour, “A novel single pass severe plastic deformation technique: Vortex extrusion”, Materials Science and Engineering: A 530, 2011, pp. 469.
13. G. Faraji, M. Mashhadi, K. Abrinia, H. Kim, “Deformation behavior in the tubular channel angular pressing (TCAP) as a noble SPD method for cylindrical tubes”, Applied Physics A: Materials Science & Processing, 1 2012.
14. G. Faraji, M. M. Mashhadi, H. S. Kim, “Tubular channel angular pressing (TCAP) as a novel severe plastic deformation method for cylindrical tubes”, Materials Letters, 2011.
15. A. V. Nagasekhar, S. C. Yoon, Y. Tick-Hon, H. S. Kim, “An experimental verification of the finite element modelling of equal channel angular pressing”, Computational Materials Science 46, 2009, pp. 347.
16. G. Faraji, M. M. Mashhadi, S.-H. Joo, H. S. Kim, “The role of friction in tubular channel angular pressing”, Rev. Adv. Mater. Sci 31, 2012, pp. 12.
17. C. Xu, M. Furukawa, Z. Horita, T. G. Langdon, “Using ECAP to achieve grain refinement, precipitate fragmentation and high strain rate superplasticity in a spray-cast aluminum alloy”, Acta Materialia 51, 2003, pp. 6139.
18. C. Xu, Z. Horita, T. G. Langdon, “The evolution of homogeneity in processing by high-pressure torsion”, Acta Materialia 55, 2007, pp. 203.
19. C. Xu, K. Xia, T. G. Langdon, “The role of back pressure in the processing of pure aluminum by equal-channel angular pressing”, Acta Materialia 55, 2007, 
    pp. 2351.
20. V. Patil Basavaraj, U. Chakkingal, T. S. Prasanna Kumar, “Study of channel angle influence on material flow and strain inhomogeneity in equal channel angular pressing using 3D finite element simulation”, Journal of Materials Processing Technology 209, 2009, pp. 89.
21. G. Faraji, A. Babaei, M. M. Mashhadi, K. Abrinia, “Parallel tubular channel angular pressing (PTCAP) as a new severe plastic deformation method for cylindrical tubes”, Materials Letters 77, 2012, P. 82.
22. L. S. Tóth et al., “Severe plastic deformation of metals by high-pressure tube twisting”, Scripta Materialia 60, 2009, pp. 175.
23. G. Faraji, “Plastic deformation analysis in parallel tubular channel angular pressing (PTCAP)”, Journal of Advanced Materials and Processing 2, 2013, pp. 23.
24.       H. S. Kim, “Finite element analysis of deformation behaviour of metals during equal channel multi-angular pressing”, Materials Science and Engineering: A 328, 2002, pp. 317.