Microstructure Evolution, Mechanical, and Corrosion Behavior of Cryogenic Friction Stir‐Processed AA2014 Alloy

Satyanarayana, M. V. N. V.; Kumar, Adepu

doi:10.1002/adem.202100301

Cited by 16 publications

(5 citation statements)

References 42 publications

(78 reference statements)

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“…The tool's intense plastic flow transforms the large aluminum grains into smaller ones, and the tool's movement helps the grains to distribute evenly. 6,21–23 For a better understanding of the grain refinement across the bulk-area processing region, EBSD analysis was done at each overlapping pass OLFSP sample. The EBSD maps of the stir zone in each pass (labeled with A–E) of OLFSP samples are shown in Figures 3 and 4, and it has been noticed that the grain size of each pass is approximately the same in processing regions owing to the selection of optimum processing conditions (such as tool revolution rate and travel rate) and providing time gap between successive overlapping paths.…”

Section: Resultsmentioning

confidence: 99%

“…The deformed material is moved around the probe from the leading to the trailing edge (TA) and deposited beneath the shoulder. 2,3 FSP is a versatile technique for repairing casting defects, 4 local modifications of microstructure, 5 achieving grain refinement, 6 and producing surface composites in metals and alloys. 7 To accomplish these functions, singlepass FSP is carried out.…”

Section: Introductionmentioning

confidence: 99%

“…FSP is a versatile technique for repairing casting defects, 4 local modifications of microstructure, 5 achieving grain refinement, 6 and producing surface composites in metals and alloys. 7 To accomplish these functions, single-pass FSP is carried out.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of overlapping technique on the grain size distribution and grain orientation in friction stir processed aluminum alloys

Satyanarayana

Suresh²,

Janaki

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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Friction stir processing (FSP) with the overlapping method is the best approach for achieving bulk surface modification in metals and alloys. In the current study, a bulk-area processing region was created in aluminum alloys using FSP with pin overlapping. The grain size distribution and texture orientations have been examined using the electron backscattered diffraction technique. The findings revealed that the grain size distribution is uniform throughout the processed region, but the texture orientation is varied from one pass to other overlapping passes. Finally, it was identified from the results that the overlapping technique does not affect the grain size but affects the texture orientations and their intensities in each overlapping pass.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of overlapping technique on the grain size distribution and grain orientation in friction stir processed aluminum alloys

Satyanarayana

Suresh²,

Janaki

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

Self Cite

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“…The corrosion potential (Ecor) extracted from the Tafel plots is also documented in table 2. Generally highest negative Ecor value indicates less corrosion resistance, whereas the lowest negative Ecor indicates high corrosion resistance [25][26][27]. The outcomes showed that CrMoV low alloy steels' corrosion resistance was improved by heat treatment followed by cryogenic treatment.…”

Section: Corrosionmentioning

confidence: 95%

Enhancement of corrosion resistance of CrMoV low alloy steels using cryogenic treatment

Sarveswara Reddy,

Durga Rajesh,

Francis Luther King

2023

Eng. Res. Express

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The current investigation explores the effect of cryogenic treatment on the microstructural and corrosion behavior of CrMoV low-alloy steels. The casted samples in the required dimensions were treated by annealing followed by deep cryogenic treatment (DCT). Initially, the microstructural modification brought by combined treatments was studied using an optical microscope (OM), scanning electron microscope (SEM), and x-ray diffraction (XRD) technique. After DCT, a refined and uniform grain structure was identified. The DCT resulted in the development of a fine-grained structure and reduced the mean grain size of the alloy, and this refinement of the grain structure is due to the reduction of lattice defects during the cooling process. The corrosion behavior was studied using the weight loss and Tafel polarization tests. The corrosion findings indicated a significant enhancement in the corrosion resistance of the specimens after DCT. The DCT specimens exhibited higher corrosion potentials compared to the base material. The DCT can promote the development of a more protective passive layer on the sample’s surface. This passive layer serves as an obstacle, preventing the diffusion of corrosive products and increasing corrosion resistance. Finally, it suggests that DCT positively impacts the CrMoV steels’ resistance to corrosion.

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“…Various overlapping percentages from 0 to 100 are taken into account when executing the OLFSP. As indicated by numerous publications, 3,10 overlapping with 50% was used in order to eradicate the advancing side and obtain additional grain refining. In the current investigation, a five-pass OLFSP was carried out by removing the advancing side.…”

Section: Selection Of Overlapping Ratiomentioning

confidence: 99%

Microstructure, mechanical characteristics, and electrochemical behavior of the wide-area stir zone fabricated in Al5083 by friction stir processing with overlapping technique

Keerthana

Satyanarayana

Reddy³

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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In the current study, a wide-area stir region was created in Al5083 aluminum alloy using multi-pass friction stir processing (FSP) with 50% pin overlapping. Microstructural investigations such as grain structure analysis and intermetallic particle (IMPs) distribution were carried out on processed alloys using optical and scanning electron microscopy (SEM). Recrystallized fine grains were developed after FSP due to the intense plastic straining and dynamic recrystallization. It was also identified that the grain refinement was uniform in the stir region of all overlapping passes, resulting in uniform hardness over the wide-area stir region. Three different types of IMPs, such as needle shape iron-based IMPs, round shape magnesium-based IMPs, and the very fine magnesium-based IMPs along the grain boundaries, were identified from the SEM analysis. The tensile test findings showed that the elongation improved drastically after overlapping FSP, while the hardness and tensile strength were found to be decreased due to high temperature thermal cycles. Electrochemical investigations revealed that the corrosion rate decreased after FSP due to the formation of uniform grain structure and dissolution of iron-based IMPs.

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Microstructure Evolution, Mechanical, and Corrosion Behavior of Cryogenic Friction Stir‐Processed AA2014 Alloy

Cited by 16 publications

References 42 publications

Effect of overlapping technique on the grain size distribution and grain orientation in friction stir processed aluminum alloys

Effect of overlapping technique on the grain size distribution and grain orientation in friction stir processed aluminum alloys

Enhancement of corrosion resistance of CrMoV low alloy steels using cryogenic treatment

Microstructure, mechanical characteristics, and electrochemical behavior of the wide-area stir zone fabricated in Al5083 by friction stir processing with overlapping technique

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