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Influences of pinprofile and transverse speed on microstructure, mechanical properties, and wear behavior of nanocomposite AA6082/WC and fabricated via friction stir processing
Journal of Radiation Research and Applied Sciences ( IF 1.7 ) Pub Date : 2021-12-15 , DOI: 10.1080/16878507.2021.2004720
Amir A. Mahdy 1 , A. Mourad 2 , E.S. Mosa 1 , A. Kandil 1
Affiliation  

ABSTRACT

Friction stir processing (FSP) was successfully employed to produce AA6082/WC composite material. This research uses nano-sized WC particles of 50 nm average diameter as a reinforcement material. In order to identify the best condition for producing AA6082/WC composite material, two-pin profiles and four feed rates at 1200-rpm tool rotational velocity were used. The microstructure of the AA6082/WC obtained composites was investigated using a light optical microscope (LOM), Scanning Electron Microscope (SEM), and Transmission Electron Microscope (TEM). Results showed a homogenous distribution and excellent interfacial bonding between WC nanoparticles and the base matrix.The mechanical tests result showed significant improvement in obtained composite mechanical properties using different pin profiles and transverse speed. The composite processed by a cylindrical left pin tool had the highest ultimate tensile strength (UTS) strength, yield strength (YS), and microhardness compared to the hexagonal pin tool. The well-distributed nano-WC particles within the matrix improved the wear resistance by preventing the peeling of the A6082 grains during the sliding wear test.



中文翻译:

Pinprofile 和横向速度对纳米复合材料 AA6082/WC 的微观结构、机械性能和磨损行为的影响,并通过搅拌摩擦加工制造

摘要

摩擦搅拌加工(FSP)成功地用于生产AA6082/WC复合材料。本研究使用平均直径为 50 nm 的纳米级 WC 颗粒作为增强材料。为了确定生产 AA6082/WC 复合材料的最佳条件,在 1200 rpm 工具旋转速度下使用了两个销轮廓和四个进给速率。使用光学显微镜 (LOM)、扫描电子显微镜 (SEM) 和透射电子显微镜 (TEM) 研究了 AA6082/WC 复合材料的微观结构。结果表明,WC纳米颗粒与基体之间分布均匀,界面结合良好。力学测试结果表明,使用不同的销钉轮廓和横向速度,获得的复合材料力学性能显着提高。与六角销工具相比,由圆柱形左销工具加工的复合材料具有最高的极限拉伸强度 (UTS)、屈服强度 (YS) 和显微硬度。基体中分布良好的纳米 WC 颗粒通过防止滑动磨损试验期间 A6082 晶粒的剥落来提高耐磨性。

更新日期:2021-12-15
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