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 effects of reinforcing particle types and FSP pass number on the powder distribution pattern, microstructure, microhardness, and on tensile and wear properties of the developed surfaces were investigated.
Abstract: In this research, nanosized SiC and Al2O3 particles were added to as-cast AZ91 magnesium alloy, and surface nanocomposite layers with ultrafine-grained structure were produced via friction stir processing (FSP). Effects of reinforcing particle types and FSP pass number on the powder distribution pattern, microstructure, microhardness, and on tensile and wear properties of the developed surfaces were investigated. Results show that the created nanocomposite layer by SiC particles exhibits a microstructure with smaller grains and higher hardness, strength, and elongation compared to the layer by Al2O3 particles. SiC particles do not stick together and are distributed separately in the AZ91 matrix; however, distribution of SiC particles is not uniform in all parts of the stirred zone (SZ), which causes heterogeneity in microstructure, hardness, and wear mechanism of the layer. Al2O3 particles are agglomerated in the different points of matrix and create alumina clusters. However, distribution of Al2O3 clusters in all parts of the SZ is uniform and results in a uniform microstructure. In the specimen produced by one-pass FSP and SiC particles, the wear mechanism changes in different zones of SZ due to the nonuniform distribution of particles. However, in the specimen produced by Al2O3 particles, the wear mechanism in all parts of the SZ is the same and, in addition to the abrasive wear, delamination also occurs. Increasing FSP pass number results in improved distribution of particles, finer grains, and higher hardness, strength, elongation, and wear resistance.
113 citations
TL;DR: In this article, the effect of FSP-induced texture on anisotropy in mechanical behavior is discussed, where the authors show that the texture results in much higher tensile stress and ductility, but lower uniform strain in the transverse direction, than in the processing direction.
113 citations
TL;DR: In this article, a route combining powder metallurgy and subsequent friction stir processing was utilized to fabricate carbon nanotube reinforced Al (CNT/Al) and 6061Al composites.
112 citations
TL;DR: In this paper, the room temperature and hot tensile properties of AZ91 magnesium alloy produced by high pressure die cast after friction stir processing (FSP) were studied in the present paper.
112 citations
TL;DR: In this paper, the effect of these reinforcements either separately or in the combined form, on microstructural modification, mechanical properties and corrosion resistance of FSPed Al5083 surface composites was studied.
111 citations