Experimental investigation on the performance of an improved equal channel angular pressing die

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Surendarnath, S.^1 ; Sankaranarayanasamy, K.^1 ; Ravisankar, B.^2

Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli-620015, India^1

Department of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli-620015, India^2

关键词: Channel angle;    Corner angle;    Crystalline size;    Die design;    ECAP;    Experimental investigations;    Extrusion process;    Microhardness measurement;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012011/pdf
DOI  :  10.1088/1757-899X/63/1/012011

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A major problem in Equal Channel Angular Pressing is die design. Friction plays an important role in the extrusion process. In the present work, Aluminium 6082 alloy was processed through a modified ECAP die originally proposed by Mathieu et al. in 2004 [1] and the performance of the die was analyzed. The channel angle was φ=90° and corner angle ψ=20°. Mechanical properties, micro hardness measurement and crystalline size (D) were measured from the extruded specimen for both the conventional and new die designs. It has been found that the new die samples displayed better results than the conventional ones. The newly designed die reduced the effect of friction on the work piece, it increased the tensile strength, the hardness of the material and achieved better grain refinement.