Effects of extrusion deformation on mechanical properties ofsub-micron Si3N4p/2024 composite

来源期刊:中国有色金属学报(英文版)2009年增刊第2期

论文作者:修子扬 陈国钦 刘艳梅 杨文澍 武高辉

文章页码:373 - 377

Key words:Si3N4p/2024Al composite; extrusion deformation; mechanical properties

Abstract: Si3N4p/2024Al composite was fabricated by squeeze casting method and treated by extrusion deformation. Microstructure analyses indicate that Si3N4 particles in the composite are in cylindrical polyhedron shape. Extrusion deformation is beneficial to uniform distribution of Si3N4 particles and improves the relative density of Si3N4p/2024Al composite. Tensile strength of Si3N4p/2024Al composite increases by 76.6% after T6 treatment, and after extrusion and T6 treatment it is by 57.6% more than T6 treatment only. Elastic modulus of Si3N4p/2024Al composite increases a little after T6 treatment but increases by 33.5% after extrusion deformation.

基金信息:Development Program for Outstanding Young Teachers in Harbin Institute of Technology, China

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