Effect of powder mixing on the mechanical strength of polyamide 6-AZ61 magnesium composites prepared by compression molding

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2024-11-17 DOI:10.1016/j.coco.2024.102169

Song-Jeng Huang , Yopi Yusuf Tanoto , Chuan Li

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Abstract

A composite material of polyamide 6 and AZ61 magnesium alloy was produced by hot press molding. Both matrix and reinforcement powders were thoroughly mixed by ball milling and then hot pressed to forge a bulk material. Four process parameters of the mixing process including milling time, milling speed, ball-to-powder weight ratio, and the AZ61 wt percentage at various levels were investigated for their influences on the mechanical strength of the composites. Material characterization includes XRD, scanning electron microscopy, uniaxial tensile test, and Vickers hardness. An experimental design using Taguchi (L9 (3,4)) and an analysis of variance indicate that the AZ61 wt percentage is the most influential factor in the ultimate strength of the PA6-AZ61 composite. Adding 5 wt% reinforcement powders to PA6 and milled at 300 rpm for 30 min can increase the average ultimate tensile strength of composites to 63.83 MPa with a maximum strain of 7.71 %, and Vickers hardness of 21.97 HV. As compared to those in the pure PA6 matrix (58.83 MPa 2.29 %, and 13.01 HV), this enhancement in ductility is achieved by the well-dispersed AZ61 particles in the PA6 matrix.

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粉末混合对压缩成型法制备的聚酰胺 6-AZ61 镁复合材料机械强度的影响

聚酰胺 6 和 AZ61 镁合金的复合材料是通过热压成型制成的。通过球磨将基体和增强粉末充分混合，然后热压成型。研究了混合过程中的四个工艺参数，包括研磨时间、研磨速度、球粉重量比和不同水平的 AZ61 重量百分比，以了解它们对复合材料机械强度的影响。材料表征包括 XRD、扫描电子显微镜、单轴拉伸试验和维氏硬度。田口（L9 (3,4)）实验设计和方差分析表明，AZ61 重量百分比是影响 PA6-AZ61 复合材料极限强度的最大因素。在 PA6 中添加 5 wt% 的增强粉末并以 300 rpm 的转速研磨 30 分钟，可将复合材料的平均极限拉伸强度提高到 63.83 MPa，最大应变为 7.71 %，维氏硬度为 21.97 HV。与纯 PA6 基质（58.83 兆帕 2.29 % 和 13.01 HV）相比，这种延展性的提高是由 PA6 基质中分散良好的 AZ61 颗粒实现的。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.