Topic
Friction stir processing
About: Friction stir processing is a research topic. Over the lifetime, 2977 publications have been published within this topic receiving 62158 citations.
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TL;DR: In this paper, the microstructure and corrosion behavior of modified Mg-9Al-xRE alloys were documented, and it was found that the formation of a large amount of coarse strip-like Al-RE precipitates is responsible for the accelerated dissolution of anodic magnesium matrix.
33 citations
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05 Jan 2016-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the results show that the initial base metal temper has a significant impact on the microstructure and the mechanical properties of the stir zone of Al-7B04 alloy sheets under T6, T4 and O tempers.
Abstract: 2 mm thick Al-7B04 alloy sheets under T6, T4 and O tempers were subjected to friction stir processing (FSP). The microstructure, Vickers hardness and tensile properties of the stir zone were characterized. The results show that the initial base metal temper has a significant impact on the microstructure and the mechanical properties of the stir zone. FSP led to the formation of full recrystallized microstructure, the average grain size in the stir zone ranged from 2.1 to 2.2 μm when the base metal tempers were T6 and T4. On account of the relatively strong pin force of the precipitates, the grains in the stir zone became finer when O temper base metal was applied. Besides, the stir zones produced using the base metal under T6 and T4 tempers were softened, while a significant strengthening was observed when the base metal temper was O. The softening in the stir zone for T6 and T4 temper is attributed to the dissolution of fine strengthening precipitates during FSP, and the strengthening for O temper arises from the grain refinement caused by FSP.
33 citations
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11 Aug 2021TL;DR: In this paper, multi-walled carbon nanotube/aluminum composites are fabricated on Al-Si cast alloy employing friction stir processing, and the microstructure of the stir zone, as well as the effect of process...
Abstract: Multi-walled carbon nanotube/aluminum composites are fabricated on Al–Si cast alloy employing friction stir processing. First, the microstructure of the stir zone, as well as the effect of process ...
33 citations
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TL;DR: In this article, a mixture of MoS2 and CeO2 powder was reinforced in Al7075 alloy through friction stir processing with different processing speed and multi-pass approach.
33 citations
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TL;DR: In this paper, AA 2024 wrought aluminium alloy was reinforced with Al2O3 nanoparticles to fabricate surface metal matrix nanocomposites (MMNCs) via friction stir processing (FSP).
Abstract: In this work, AA 2024 wrought aluminium alloy was reinforced with Al2O3 nanoparticles to fabricate surface metal matrix nanocomposites (MMNCs) via friction stir processing (FSP). Processing parameters, namely, rotational speed, traverse speed and the number of processing passes, were investigated to study their effects on the wear resistance, mechanical properties and hardness behaviour of the MMNCs. The mechanical properties of the materials were evaluated in a tensile test, and their hardness and wear properties were determined through Vickers microhardness and weight loss tests, respectively. Microstructural observation revealed that the processing parameters influenced the mechanical properties, wear behaviour, and hardness properties of the MMNCs. Specifically, the FSP refined the microstructural grains to a level 19 times better than that achieved with base alloy, thereby fine-tuning the average base alloy grain size of 135 μm to an average of 7 μm. Increasing the number of passes improved wear resistance by an average of 39%–70%, and implementing a third round of FSP enhanced the ultimate tensile strength and Young’s modulus by 40% and 20% on average, respectively. Finally, the incorporation of Al2O3 nanoparticles increased the hardness of the MMNCs by an average of 42%.
33 citations