Characteristics of Friction Stir Processed UHMW Polyethylene Based Composite

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Hussain, G.^1 ; Khan, I.^1

Faculty of Mechanical Engineering, GIK Institute of Engineering Sciences and Technology, KPK, 23640, Pakistan^1

关键词: Defects formation;    Enhanced properties;    Friction stir processing;    Macroscopic and microscopic;    Parent materials;    Process parameters;    Reinforcing materials;    Rotational speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012109/pdf
DOI  :  10.1088/1757-899X/301/1/012109

来源: IOP

【 摘 要 】

Ultra-high molecular weight polyethylene (UHMWPE) based composites are widely used in biomedical and food industries because of their biocompatibility and enhanced properties. The aim of this study was to fabricate UHMWPE / nHA composite through heat assisted Friction Stir Processing. The rotational speed (ω), feed rate (f), volume fraction of nHA (v) and shoulder temperature (T) were selected as the process parameters. Macroscopic and microscopic analysis revealed that these parameters have significant effects on the distribution of reinforcing material, defects formation and material mixing. Defects were observed especially at low levels of (ω, T) and high levels of (f, v). Low level of v with medium levels of other parameters resulted in better mixing and minimum defects. A 10% increase in strength with only 1% reduction in Percent Elongation was observed at the above set of conditions. Moreover, the resulted hardness of the composite was higher than that of the parent material.