International Journal of Applied Engineering Research ISSN 0973-4562 Volume 13, Number 6 (2018) pp. 3716-3718 © Research India Publications. http://www.ripublication.com 3716 Investigating the Mechanical Properties of FCC Structured Material Processed by Equal Channel Angular Extrusion M. Venkat Reddy 1* , M. Chandra Sekhar Reddy 2 , P. Venkateshwar Reddy 3 1 Department of Mechanical Engineering, TKR College of Engineering and Technology, Hyderabad, Telangana, 500097 India. 2 Department of Mechanical Engineering, University College of Engineering, Osmania University, Hyderabad, Telangana, 500007 India. 3 Department of Mechanical Engineering, G Pulla Reddy Engineering College, Kurnool, Andhra Pradesh, 518007 India. Abstract Severe plastic deformation (SPD) process like Equal Channel Angular Extrusion (ECAE) has involved a large amount of interest, because of its capability to make ultrafine grained microstructures. Equal Channel Angular Extrusion is an inventive method capable of producing homogeneous plastic deformation for a variety of materials with no major changes in geometrical shape and cross section. In the present work pure aluminum has been investigated for ECAE processing. Single pass Pressings were conducted on Al at the room temperature. Experiments were performed by means of ECAE die with channel angle of 120 0 attached to hydraulic press, moreover Mechanical and micro-structural characterization of the ECA pressed Aluminum is carried out. Keywords: ECAE; Aluminum; SEM; Tensile Test; Hardness Test INTRODUCTION Equal channel angular extrusion (ECAE) is a method of obtaining ultra fine grain structures by imparting a huge amount of shear strain on to the materials with no altering the billet shape or size. In ECAE different die angles was used to consider the effect of strain homogeneity and deformation behavior of the processed material. The result accomplished that the best strain homogeneity of the sample with lower dead zone formation can be achieved with a channel angle of 90° and outer corner angle of 10° [1]. Proper microstructure and mechanical properties and their effective strains were achieved with a die channel angle of 90° [2]. Magnesium alloy AZ31 was processed by ECAE to know the effect of deformation behavior and fracture toughness. The result originate that the deformation behavior was improved by the ECAE process [3]. The effect ECAE process on grain refinement was investigated numerically and experimentally using different die angles [4]. The effects of multi-pass processing was investigated and found that the much more improvement in grain refinement and strength on the specimens was observed [5]. The effects of friction conditions was investigated between workpiece and die during ECAE process and found that forming loads varied very sensitively depending on the friction conditions [6]. The present study aims at the investigation of micro-structural improvements during the ECAE processing along with the tensile and hardness tests. METHODOLOGY The equal channel angular extrusion (ECAE) process consists of die, punch and billet. In ECAE process the die is made of two channels of same cross section (symmetrical), the punch is placed on the die. Before processing the workpiece and the walls of the die were coated with lubricant in order to minimize the friction during the ECAE process. This was done by forcing the material through a die consisting of two channels of equal cross sectional area that intersect at an angle of Φ-120 o . There is also an additional angle Ψ-30 o which defines the arc of curvature at the outer point of the two intersecting channels. Fig.1 shows the ECAE die used for the present study. Figure.1: Experimental Setup of ECAE process Die Design Details The dimensions considered for developing the ECAE process setup in below Table 1. The ECAE die contains two channels, equal in cross-section, intersecting at an angle near the center of the die. The test sample is machined to fit within these channels and it is pressed through the die using a punch. Die