ghader faraji - department of mechanical engineering faculty of engineering university of tehran tehran iran ۱۱۱۵۵-۴۵۶۳
mahmoud mosavi mashhadi - department of mechanical engineering faculty of engineering university of tehran tehran iran ۱۱۱۵۵-۴۵۶۳
karen abrinia - department of mechanical engineering faculty of engineering university of tehran tehran iran ۱۱۱۵۵-۴۵۶۳

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 ultafine 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 onAZ91 Magnesium alloy at 300c.microhardnessmeasurements demonstrated increasing hardness to 78 HV from the initial value of 51 HV.

sever plastic deformation,tubular channel angular ,pressing ,finite element ,experiments