Al-7%Si-0.3%Mg/瓜壳灰颗粒复合材料的磨损行为

Wear behavior of Al-7%Si-0.3%Mg/melon shell ash particulate composites.

作者信息

Abdulwahab M, Dodo R M, Suleiman I Y, Gebi A I, Umar I

机构信息

Department of Metallurgical and Materials Engineering, Ahmadu Bello University, Zaria, Nigeria.

Department of Metallurgical and Materials Engineering, University of Nigeria, Nsukka, Nigeria.

出版信息

Heliyon. 2017 Aug 7;3(8):e00375. doi: 10.1016/j.heliyon.2017.e00375. eCollection 2017 Aug.

DOI:10.1016/j.heliyon.2017.e00375

PMID:28819650

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5548367/

Abstract

The present study examined wear characteristics of A356/melon shell ash particulate composites. Dry-sliding the stainless steel ball against specimen disc revealed the abrasive wear behavior of the composites under loads of 2 and 5N. The composite showed lower wear rate of 2.182 × 10 mm/Nm at 20 wt% reinforced material under load of 5N. Results showed that wear rate decreased significantly with increasing weight percentage of melon shell ash particles. Microstructural analyses of worn surfaces of the composites reveal evidence of plastic deformation of matrix phase. The wear resistance of A356 increased considerably with percentage reinforcement. In other words, the abrasive mass loss decreased with increasing percentage of reinforcement addition at the both applied loads. The control sample suffered a highest mass loss at 5 N applied load.

摘要

本研究考察了A356/瓜壳灰颗粒复合材料的磨损特性。使不锈钢球在试样盘上进行干滑动，揭示了复合材料在2N和5N载荷下的磨粒磨损行为。在5N载荷下，当增强材料含量为20 wt%时，该复合材料的磨损率较低，为2.182×10⁻⁶mm/Nm。结果表明，随着瓜壳灰颗粒重量百分比的增加，磨损率显著降低。对复合材料磨损表面的微观结构分析揭示了基体相塑性变形的证据。A356的耐磨性随着增强材料百分比的增加而显著提高。换句话说，在两种施加的载荷下，磨粒质量损失随着增强材料添加百分比的增加而减少。在5N的施加载荷下，对照样品的质量损失最大。