作者: Behnam Esfandiar Jahromi , Reza Derakhshandeh Haghighi , Ahmad Jenabali Jahromi
DOI: 10.1007/S11665-011-9896-1
关键词: Equal channel angular extrusion 、 Compaction 、 Materials science 、 Indentation hardness 、 Spark plug 、 Metallurgy 、 Composite material 、 Aluminium 、 Hydrostatic pressure 、 Optical microscope 、 Porosity
摘要: Aluminum powder in tube compaction with a 25 mm front plug through equal channel angular extrusion (ECAE) at room temperature was modeled using the finite element analysis package ABAQUS. The Gurson model used modeling this process. 2-D simulations 90° angle die showed better consolidation of near inner edge than outer after one pass ECAE but almost full densification occurs two passes. effect hydrostatic pressure on investigated by plugs varying length dimension. results obtained from were also compared experiments conducted to compact aluminum mean particle diameter 45 μm. Optical microscopy, microhardness test, and density measurements confirmed simulations. extended 60° 120° die. It found that is sufficient consolidate completely uniformly die, whereas material still porous