پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 11 |
| تعداد شماره‌ها | 217 |
| تعداد مقالات | 2,170 |
| تعداد مشاهده مقاله | 3,066,313 |
| تعداد دریافت فایل اصل مقاله | 2,231,151 |
A numerical and experimental study on tubular channel angular pressing (TCAP) as a noble SPD method | ||
| Journal of Computational & Applied Research in Mechanical Engineering (JCARME) | ||
| مقاله 4، دوره 2، شماره 1، اسفند 2012، صفحه 31-36 اصل مقاله (484.63 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22061/jcarme.2012.41 | ||
| نویسندگان | ||
| Ghader Faraji*؛ Mahmoud Mosavi Mashhadi؛ Karen Abrinia | ||
| School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran, 11155-4563 | ||
| تاریخ دریافت: 06 اسفند 1390، تاریخ بازنگری: 31 خرداد 1391، تاریخ پذیرش: 04 تیر 1391 | ||
| چکیده | ||
| The current study conducted a finite element (FE) and experimental investigation on tubular channel angular pressing as a noble severe plastic deformation technique for producing ultrafine grained and nanostructure tubular components. To examine the effects of the TCAP process on the strain distribution and deformation behavior, FE simulations were employed. The FE results demonstrated that equivalent plastic strain of 2.1-2.9 was developed after applying one pass TCAP. Analytical investigations were carried out to calculate the accumulated strain during the process. Tube thinning in the early stages of the process was observed as a result of tensile circumferential strains but this could be compensated for by the back pressure effect resulting from the next shear zones and also compressive circumferential strain resulting from decreasing the tube diameter. Microstructural observations showed significant grain refinement after one pass TCAP on AZ91 magnesium alloy at 300 ºC. Microhardness measurements demonstrated increasing hardness to 78 HV from the initial value of 51 HV. | ||
| کلیدواژه‌ها | ||
| Sever plastic deformation؛ Tubular channel angular pressing؛ Finite element؛ Experiments | ||
| مراجع | ||
|
[1] R. Z. Valiev, R. K. Islamgaliev and I. V. Alexandrov, "Bulk ulk nanostructured materials from severe plastic deformation" Prog. Mater. Sci., Vol. 45, pp.103‒189, (2000).
[2] R. Z. Valiev and T. G. Langdon, "Principles of equal-channel angular pressing as a processing tool for grain refinement", Prog. Mater. Sci., Vol. 51, pp. 881‒951, (2006).
[3] A. P. Zhilyaev and T. G. Langdon, "Using high-pressure torsion for metal processing: Fundamentals and applications", Prog. Mater. Sci., Vol. 53, pp. 893-979, (2008).
[4] Y. Saito, H. Utsunomiya, N. Tsuji and T. Sakai, "Novel ultra-high straining process for bulk materials development of the accumulative roll-bonding (ARB) process", Acta Mater., Vol. 47, pp. 579‒583, (1999).
[5] L. S. Toth, M. Arzaghi, J. J. Fundenberger, B. Beausir, O. Bouaziz and R. Arruffat-Massion, "Severe plastic deformation of metals by high-pressure tube twisting", Scripta Mater., Vol. 60, pp. 175‒177, (2009).
[6] S. Mohebbi and A. Akbarzadeh, "Accumulative spin-bonding (ASB) as a novel SPD process for fabrication of nanostructured tubes", Mater. Sci. Eng. A, Vol. 528, pp. 180‒188, (2010).
[7] G. Faraji, M. M. Mashhadi and H. S. Kim, "Tubular channel angular pressing (TCAP) as a novel severe plastic deformation method for cylindrical tubes", Mater. Lett., Vol. 65, pp. 3009‒3121, (2011).
[8] G. Faraji, M. M. Mashhadi and H. S. Kim, "Deformation Behavior in Tubular Channel Angular Pressing (TCAP) Using Triangular and Semicircular Channels", Mater. Trans., Vol. 53, No. 1, pp. 8‒12, (2012).
[9] Y. Iwahashi, J. Wang, Z. Horita, M. Nemoto and T.G. Langdon, “Principle of equal channel angular pressing for the processing of ultra-fine grained materials”, Scripta Mater, Vol. 35, pp. 143‒146, (1996).
[10] H. S. Kim, "Finite element analysis of deformation behaviour of metals during equal channel multi-angular pressing", Mater. Sci. Eng. A, Vol. 328, pp. 317‒323, (2002).
[11] G. I. Raab, "Plastic flow at equal channel angular processing in parallel channels", Mater. Sci. Eng. A, Vol. 410, pp. 230‒238, (2005).
[12] G. Faraji, M. M. Mashhadi and H. S. Kim, "Microstructure inhomogeneity in ultra-fine grained bulk AZ91 produced by accumulative back extrusion (ABE)" Mater. Sci. Eng. A, Vol. 528, pp. 4312‒4317, (2011). | ||
|
آمار تعداد مشاهده مقاله: 2,651 تعداد دریافت فایل اصل مقاله: 1,444 |
||