Influence of cooling media in achieving grain refinement of AA2014 alloy using friction stir processing

Satyanarayana, Mvnv; Kumar, Adepu

doi:10.1177/0954406220922858

Cited by 34 publications

(23 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different mechanisms are involved in the evolution of fine-grained structure and the formation of HABS during FSP. 38,40–44 It should be noted that during FSP, grain refinement is not obtained either by dynamic recovery (DRV) or by discontinuations-DRX (D-DRX) alone. But the grains are refined in SZ due to the combined action of DRV and D-DRX.…”

Section: Resultsmentioning

confidence: 99%

“…The authors took the data of Jain et al. 41 They fabricated the AA5083-SiC/CNT composites through FSP and statistical data of those composites such as grain size, hardness, and tensile strength were summarized in Table 4. By using Table 4 data, the authors established a relationship between hardness and strength (YS and UTS) using equations (5) and (6) as shown in Figure 10.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Towards finding a novel constant between local and bulk strength of friction stir processed aluminum alloys

Satyanarayana

Kumar

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

Self Cite

View full text Add to dashboard Cite

Friction stir processing has gained remarkable success in producing ultrafine-grained structures and surface composites. In this context, the primary objective is to establish a linear relationship between local strength (i.e. hardness) and bulk mechanical strength (i.e. tensile strength) of friction stir processed aluminum alloys using experimental investigations on selected alloy system together with data reported in literature sources. Initially, authors generated a linear relation between hardness and strength of friction stir processed aluminum alloys under different cooling conditions. After friction stir processing, recrystallized fine grains were formed and better refinement was achieved in cooling-assisted friction stir processing. Irrespective of grain refinement, the strength and hardness of friction stir processed samples were found to be lower compared to the base metal due to the precipitation phenomenon during friction stir processing. At the same time, hardness and strength improved in cooling-assisted friction stir processing compared to natural-cooled friction stir processing due to better grain refinement going by the parameters of Hall–Petch equation. For friction stir processed samples, relevant constants were found using Hall–Petch equation. The experimental values of hardness and strength were well fitted with the formulated equations due to the formation of a homogeneous fine-grained structure. Also, two novel linear relations were successfully established between hardness and strength with proportionality constants of 1.9 and 2.7, respectively. On the other hand, it was also concluded that it is not possible to establish a linear relation between hardness and strength of surface composites due to structural inhomogeneity and agglomeration of reinforcement particles.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Towards finding a novel constant between local and bulk strength of friction stir processed aluminum alloys

Satyanarayana

Kumar

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

Self Cite

View full text Add to dashboard Cite

show abstract

“…The MWCNTs mainly improve the strength and hardness of the matrix, and thus better resistance to plastic deformation is achieved, leading to the reduction in the plowing effect of the reinforcement from the matrix. This can also be attributed to a decrease in weight loss with an increase in MWCNTs [42,43].…”

Section: Wear Behaviourmentioning

confidence: 98%

Mechanical and metallurgical studies of multi-walled carbon nanotube–reinforced aluminium metal matrix surface composite by friction stir processing

Raja¹,

Jannet²,

Ruban³

2021

IJATEE

View full text Add to dashboard Cite

Aluminum alloys play a major role in the aircraft, shipbuilding, and automotive industries because of their superior strength-to-weight ratio. The aluminum alloy 5083 0 has been used in the shipbuilding industry due to its corrosion resistance properties wants is a nanoparticle that has unique properties based on its structure . Moreover, the presence of carbon results in a very high wear resistance. Its high tensile strength along with its good electrical properties makes it a desirable reinforcement for aluminum alloys. Friction stir processing is a solidstate processing technology that has acquired significant attention in recent years because of the solid-state processing wherein the mixing of materials takes place in the plastic state. This removes the disadvantages of liquid-state processing such as casting, which occurs in high temperatures and leads to various defects, in turn reducing the strength of the composites. These were the motivation behind the current study. In the present study, MWCNTs were reinforced in the magnesium-based aluminum alloy 5083 0. This study exploits the presence of carbon as a self-lubricating feature.

show abstract

“…17 The process imposes large plastic strain and dynamic recrystallization that induce grain refinement especially in aluminium alloys. 18 FSP on AA7075 by reinforcing B 4 C was carried out by Srinivasa rao et al 19 It was noted that FSP had significantly improved the ballistic performance of AA7075 material by reducing the Depth of Penetration (DOP). Around 1.6 times higher ballistic mass efficiency was obtained by Shanmugasundaram et al 20 by blending B 4 C and TiB 2 particles as reinforcements into AA7005 alloy by FSP technique.…”

Section: Introductionmentioning

confidence: 99%

Effect of ceramic particles reinforcement on the ballistic resistance of friction stir processed thick AA6061 surface composite targets

Magarajan¹,

Kumar²

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

In this paper, the effect of ceramic particles (Zirconium, Boron Carbide and Graphene) on the ballistic resistance of Friction Stir Processed (FSPed) thick AA6061 targets had been explored. The Base Metal AA6061 plates of 25 mm thickness were FSPed by reinforcing Zirconium (Zr), Boron Carbide (B4C) and Graphene (G), thus producing FSPed-Zr, FSPed-B4C and FSPed-G surface composite targets. Microhardness test was carried out and the hardness of FSPed-Zr, FSPed-B4C and FSPed-G were found to be 96, 106 and 122 HV respectively. High velocity ballistic experiments were conducted on all the targets against Ø7.62x51 mm Armour Piercing Projectile at an initial velocity of 680 ± 10 m/s. AA6063 backing plates were used to identify the ballistic resistance of the FSPed targets by Depth of Penetration (DOP) method. Consequently, higher microhardness along with frictional characteristics had increased the ballistic resistance of FSPed-G targets by 70.8%. Further, by analyzing the penetration channel, it was noticed that in FSPed-G target, the jacket detachment occurred in the entry region predominantly where the microhardness was the highest compared to other two regions. This phenomenon occurred just after the entry region for FSPed-B4C target and in middle region for FSPed-Zr target. Scanning Electron Microscopy (SEM) images inferred that, FSPed targets have absorbed maximum projectile’s kinetic energy at the entry region itself, resulting in formation of cracks. As a result, middle and exit region experienced less impact. Post ballistic microhardness test showed enhanced microhardness in the entry region of FSPed-G target due to severe work hardening. Hence the ceramic particles deposited by FSP have reduced the kinetic energy of the projectile with FSPed-G target resulting in maximum ballistic resistance.

show abstract

Influence of cooling media in achieving grain refinement of AA2014 alloy using friction stir processing

Cited by 34 publications

References 34 publications

Towards finding a novel constant between local and bulk strength of friction stir processed aluminum alloys

Towards finding a novel constant between local and bulk strength of friction stir processed aluminum alloys

Mechanical and metallurgical studies of multi-walled carbon nanotube–reinforced aluminium metal matrix surface composite by friction stir processing

Effect of ceramic particles reinforcement on the ballistic resistance of friction stir processed thick AA6061 surface composite targets

Contact Info

Product

Resources

About