Development of combined groove pressing and rolling to produce ultra-fine grained Al alloys and comparison with cryorolling

Changela, Kandarp; Hariharan, K.; Digavalli, Ravi Kumar

doi:10.1016/j.msea.2019.05.088

Cited by 29 publications

(9 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The CGP-processed samples of AA6061 after CGP first stage, CGP first pass, and CGP followed by cold rolling. 42 groove pressing (ISCGP) is another name for the CSC-CGP method. CSC-CGP is a new variant of conventional CGP to postpone the early formation of cracks and improve the uniformity of strain distribution.…”

Section: Covered Sheet Casing Methodsmentioning

confidence: 99%

“…Chun et al 114 developed the sample with a reduced grain size of 0.14 μm after hybrid ECAP followed by a cryorolling process from a grain size of 0.2 μm after ECAP processing. In the same way, Pouraliakbar et al, 41 Hajizadeh et al, 115 and Changela et al 42,43 worked on straining CGP-processed samples of aluminum alloys through cold rolling, and sometimes CGP plus cold rolling followed by annealing. [41][42][43] Figure 24 shows the processed samples after CGP first stage, CGP first pass, and CGP followed by cold rolling.…”

Section: Hybrid Spd Processesmentioning

confidence: 99%

“…In the same way, Pouraliakbar et al, 41 Hajizadeh et al, 115 and Changela et al 42,43 worked on straining CGP-processed samples of aluminum alloys through cold rolling, and sometimes CGP plus cold rolling followed by annealing. [41][42][43] Figure 24 shows the processed samples after CGP first stage, CGP first pass, and CGP followed by cold rolling. In general, CGP followed by cold rolling eliminates the surface unevenness like geometric inhomogeneity generated during CGP.…”

Section: Hybrid Spd Processesmentioning

confidence: 99%

“…In aluminum alloy 5083 (AA5083) and 6061 (AA6061), the initial thickness of the samples is reduced after the hybrid process and exhibits a specific dislocation pattern with elongated grains in the rolling direction. 42,43 A large fraction of low-angle grain boundaries and the presence of fine dislocation substructure are generated inside the elongated grain. In TEM analysis, CGP-processed aluminum sample consists of a grain size close to 1.4 μm which is further reduced by cold rolling to 425 nm and leads to improved mechanical properties.…”

Section: Hybrid Spd Processesmentioning

confidence: 99%

See 3 more Smart Citations

Developing methods of constrained groove pressing technique: A review

Kumar

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

Among various severe plastic deformation (SPD) techniques, constrained groove pressing (CGP) has arisen as a famous technique for fabricating ultrafine-grained sheet metals and alloys in recent times. The severe strain is applied to improve the mechanical performance and properties. However, inhomogeneous grain refinement, lower formability, surface unevenness, and microcracks are the common limitations of conventional CGP-processed samples. Therefore, this review inspects the latest progress through modifications of the CGP process and compares the process efficacy with the conventional process. Advanced CGP processing techniques, such as modification of die design, annealing of the processed sample, cross CGP, ring CGP, hybrid SPD, covered sheet casing CGP, and rubber pad CGP, are emerging techniques to up-scale the procedure and improve the grain refinement and thereby produce superior mechanical properties. In this review paper, the historic research of conventional CGP and its effect on grain refinement and mechanical properties is initially briefed and then recent progress through different advanced techniques is highlighted, especially in alloys. Albeit significant progress has been observed in CGP, the future scope and successful usage of CGP-processed samples in actual practice are discussed in the last stage.

show abstract

Section: Covered Sheet Casing Methodsmentioning

confidence: 99%

Section: Hybrid Spd Processesmentioning

confidence: 99%

Section: Hybrid Spd Processesmentioning

confidence: 99%

Section: Hybrid Spd Processesmentioning

confidence: 99%

See 2 more Smart Citations

Developing methods of constrained groove pressing technique: A review

Kumar

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

show abstract

“… Accumulative roll bonding ( A ); reproduced from [ 6 ], with permission from Elsevier, 2020. A schematic of the cryo-rolling process ( B ); reproduced from [ 73 ], with permission from Elsevier, 2021. …”

Section: Main Spd Processesmentioning

confidence: 99%

Biological Applications of Severely Plastically Deformed Nano-Grained Medical Devices: A Review

2021

View full text Add to dashboard Cite

Metallic materials are widely used for fabricating medical implants due to their high specific strength, biocompatibility, good corrosion properties, and fatigue resistance. Recently, titanium (Ti) and its alloys, as well as stainless steel (SS), have attracted attention from researchers because of their biocompatibility properties within the human body; however, improvements in mechanical properties while keeping other beneficial properties unchanged are still required. Severe plastic deformation (SPD) is a unique process for fabricating an ultra-fine-grained (UFG) metal with micrometer- to nanometer-level grain structures. SPD methods can substantially refine grain size and represent a promising strategy for improving biological functionality and mechanical properties. This present review paper provides an overview of different SPD techniques developed to create nano-/ultra-fine-grain-structured Ti and stainless steel for improved biomedical implant applications. Furthermore, studies will be covered that have used SPD techniques to improve bone cell proliferation and function while decreasing bacterial colonization when cultured on such nano-grained metals (without resorting to antibiotic use).

show abstract