Analysis of Friction stir processed surface quality of AA2098 aluminum alloy for aeronautical applications

Metallurgical and Materials Engineering Pub Date : 2023-08-16 DOI:10.56801/mme1000

None Mauro Carta, None Pasquale Buonadonna, None Gianluca Marongiu, None Mohamad El Mehtedi

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Abstract

FSP is a relatively new technique that changes the microstructure on the surface of the material to improve mechanical properties in the desired zone. This study aimed to investigate the surface quality of AA2098 sheets after being subjected to friction stir processing under different conditions of feed rate and rotational speed. A DoE analysis was developed with two factors, feed rate and rotational speed, and three different levels of 75, 100, 125 mm/min and 1000, 1250, 1500 rpm respectively, in order to assess the processed surface quality. The Sa parameter was used to represent the surface quality in different zones of the process, near entrance tool, middle and near exit tool, and ANOVA analysis was conducted. The results indicated that only the position and feed rate have a statistical influence on surface roughness. Additionally, the surface quality is strongly affected by the position relative to the entrance of the tool and the side (retreating or advancing sides). The roughness was found to be significantly lower on the advancing side rather than on the retreating side.

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航空用AA2098铝合金搅拌摩擦加工表面质量分析

FSP是一种相对较新的技术，它通过改变材料表面的微观结构来改善所需区域的机械性能。本研究旨在研究在不同进料速率和转速条件下，AA2098板材经搅拌摩擦加工后的表面质量。在75、100、125 mm/min和1000、1250、1500 rpm三个不同转速水平下，对加工表面质量进行了DoE分析。采用Sa参数表示加工过程中不同区域、近入口刀具、中间和近出口刀具的表面质量，并进行方差分析。结果表明，只有位置和进给速度对表面粗糙度有统计影响。此外，表面质量受到相对于刀具入口和侧面(后退或前进)的位置的强烈影响。发现前进侧的粗糙度明显低于后退侧。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Metallurgical and Materials Engineering

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