Formation of nanograin in IF steels by friction stir processing

Chabok, Ali; Dehghani, K.

doi:10.1016/j.msea.2010.08.096

Cited by 44 publications

(22 citation statements)

References 21 publications

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“…This is one of major advantages of friction stir processing, because it allows finishing the surface and, in the meantime, it applies in-situ localized heat treatment leading to microstructural refinement, densification, homogeneity, increased microhardness, superior wear and corrosion resistance of the surface layer. Friction stir was initially applied to aluminium alloys [1] and extended lately to other materials such as copper alloys [4,5], magnesium alloys [6,7], steels [8,9] or titanium alloys [10,11].…”

Section: Introductionmentioning

confidence: 99%

Influence of friction stir process parameters on surface quality of aluminum alloy A2017

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Influence of friction stir process parameters on surface quality of aluminum alloy A2017

et al. 2017

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“…The peak width pertaining to crystalline grains varies inversely with their size. In other words, as the grains get smaller, their relative peaks become broader [9]. The plastic deformation and temperature caused the large precipitates particles of the base metal to be broken and refined and distributed homogenously.…”

Section: Stir Layer Characterizationmentioning

confidence: 99%

Effect of Friction Stir Processing on (2024-T3) Aluminum Alloy

Hashim¹

2015

IJIRSET

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ABSTRACT:In this work, friction stir process (FSP) was used to enhance surface properties of AA2024-T3 alloy. The effect of friction stir shoulder rotation in addition to its pressing effect on surface topography and mechanical properties was studied. Samples were FS processed with a flat pinless cylindrical shoulder of 10mm diameter with a constant rotational and travel speeds 945 rpm and 85mm/min respectively. Results show that processed layer thickness of about 45 µm was produced after FSP. Microscopic examinations (OM and SEM) revealed refining grain size of second phase particles as a result of mixing effect of the tool. XRD results show changes in the height and width of the strengthening phase θ(Al 2 Cu) peaks, while EDX results show that Al and Cu created at another energy (KeV) compared with those that are not in phase before FSP. The maximum hardness increment is about 40-45% and the maximum value obtained at the surface is 190Hv compared to 130Hv before processing. A little bit increase was recorded in yield and tensile strengths by an amount of 15% and 9% respectively after FSP.

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“…A large number of studies have been carried out on the effect of FSP on nanostructure and other properties of Al alloys [14], Mg alloys [15][16][17], and some studies were conducted on other metals such as Cu, Ni, etc. [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Fabrications of Surface Nanocomposite by Friction Stir Processing to Improve Mechanical and Microstructural Properties of Low Carbon Steel

Khademi

Afsari

2016

Trans Indian Inst Met

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Friction stir processing was used to fabricate metal matrix composites on the surface of low carbon steel. In this research for making 2 mm surface MMC, the groove method was applied to fabricate TiB 2 nanocomposite via cylindrical tool made of tungsten carbide. Microstructural properties of FSPed samples were studied by optical microscopy and scanning electron microscopy. To evaluate mechanical properties, the micro hardness and tensile properties of MMC were measured. The results indicated that the surface nanocomposite produced by this method had excellent properties. The microstructure of surface MMCs became fine (ferrite grain size became about 1-2 lm) with no defect and porosity. Moreover by adding TiB 2 nanoparticles to the low carbon steel matrix alloy, mechanical properties were improved. Micro hardness can become 200HV higher than that of the base metal. The surface nanocomposite also exhibited better tensile strength when sample yield stress increased to about 28 %.

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Formation of nanograin in IF steels by friction stir processing

Cited by 44 publications

References 21 publications

Influence of friction stir process parameters on surface quality of aluminum alloy A2017

Influence of friction stir process parameters on surface quality of aluminum alloy A2017

Effect of Friction Stir Processing on (2024-T3) Aluminum Alloy

Fabrications of Surface Nanocomposite by Friction Stir Processing to Improve Mechanical and Microstructural Properties of Low Carbon Steel

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