Application of Novel Constrained Groove Pressing Routes on Austenitic Stainless Steel

Güler, Zeynel; Yapıcı, Güney Güven

doi:10.1007/s12666-021-02333-3

Cited by 4 publications

(3 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Route-3 consists of 90° rotations after each flattening stage for further deformation as illustrated in Figure 17. Guler et al 91 tried five different routes including above mentioned three to enhance mechanical properties and anisotropy. Apart from improvement in tensile strength and hardness, a significant improvement is observed in the material anisotropy through Route-1.…”

Section: Advanced Developing Processes Of Cgpmentioning

confidence: 99%

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: Advanced Developing Processes Of Cgpmentioning

confidence: 99%

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

“…SPD can produce large strains and improve mechanical properties through grain refinement [4,5]. Various approaches can be employed to induce severe plastic deformation (SPD) in materials, such as Equal Channel Angular Pressing (ECAP), Accumulative Roll Bonding (ARB), High-Pressure Torsion (HPT), Constrained Groove Pressing (CGP) and Multi-Directional Forging/Multi-Axial Forging (MDF/MAF) [6][7][8]. Notably, the application of SPD to bulk billets is widely recognized as a highly viable processing method for the production of wrought alloys with nanostructures [9].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Static and Dynamic Mechanical Response of Aluminum 6061 Subjected to Multi-Directional Forging

Bahat,

Yapici

2024

MSF

Self Cite

View full text Add to dashboard Cite

The present investigation focuses on the implementation of the multi-axial forging process, recognized as a severe plastic deformation (SPD) technique, with the aim of elevating the mechanical features of the widely employed Al 6061 alloy. Specifically utilized in the automotive and aviation industries, this alloy's behavior was meticulously examined through a series of quasi-static and dynamic tests. To achieve this objective, the multi-directional forging (MDF) process was implemented for up to three cycles, involving a total of nine passes, at a raised temperature of 200 °C. Subsequently, the severely deformed material underwent utilizing high strain rate loading for the Split Hopkinson Pressure Bar (SHPB) test system. After MDF, the grain size is refined down to below 11 microns with a starting grain size of 13 microns. This is reflected as increased hardness and yield strength in the quasi-static regime. For SHPB characterization, increased dynamic strength is also observed. However, although the yield strength showed about 60% increase with decent ductility, the maximum dynamic strength increased about 10% after SPD with a relatively brittle behavior.

show abstract

“…In reference [15], Route-3 comprises 90-degree rotations after each flattening stage for further deformation and this route is not discussed in this work. Guler et al [16] examined five different routes, including the three mentioned above, to improve mechanical properties and anisotropy. Aside from the significant improvement in tensile strength and hardness, they noted a noticeable improvement in material anisotropy through Route-1.…”

Section: Introductionmentioning

confidence: 99%

Strength enhancement and uniform strain distribution through cross route-constrained groove pressing

Kumar

2023

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Constrained groove pressing (CGP) is one of the severe plastic deformation techniques for sheet metals to impose large plastic strain and produce ultrafine-grained (UFG) structures without any change in dimensions. Cross route-constrained groove pressing (Cross-CGP), an advanced version of the conventional CGP process, involves two CGP cycles with an equivalent strain of 2.32 per cycle where the square sample is rotated by 90° after performing every cycle of CGP. The strain path in the sheet during conventional CGP and cross-CGP significantly affects the homogenization of mechanical properties. Sheets of low carbon steel are processed through conventional-CGP and cross-CGP routes. The ability to sustain the maximum strain has been increased in the cross-CGP process due to uniform strain distribution. The tensile strength and hardness in the sheet processed through cross-CGP are higher than that of conventional CGP, especially at higher pass numbers. Tensile behavior and hardness in two different orientations (parallel and perpendicular to the groove direction) have been found to be almost the same in the cross-CGP processed sheet.

show abstract

Application of Novel Constrained Groove Pressing Routes on Austenitic Stainless Steel

Cited by 4 publications

References 38 publications

Developing methods of constrained groove pressing technique: A review

Developing methods of constrained groove pressing technique: A review

Comparison of Static and Dynamic Mechanical Response of Aluminum 6061 Subjected to Multi-Directional Forging

Strength enhancement and uniform strain distribution through cross route-constrained groove pressing

Contact Info

Product

Resources

About