Evolution of microstructure and hardness in aluminum processed by High Pressure Torsion Extrusion

Omranpour, Babak; Ivanisenko, Yulia; Kulagin, Roman; Kommel, Lembit; García-Sánchez, E.; Nugmanov, Dayan; Scherer, Torsten; Heczel, Anita; Gubicza, Jenő

doi:10.1016/j.msea.2019.138074

Cited by 20 publications

(11 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was rationalized that plasticity can spread out from the origin of plastic deformation to the neighbouring regions and affect the deformation. In this scenario, the plastic deformation could spread out from the outer regions of samples into the central zone and affected the microstructure and mechanical properties [12]. As indicated earlier, the shear strain out of the centre of the samples can rise by increasing the ratio of ω/v.…”

Section: Discussionmentioning

confidence: 85%

“…The two process parameters of extrusion speed (v), and rotational speed (ω) influence the amount of strain and hence, the grain refinement of materials. More details about the die geometry and the process can be found elsewhere [12,16]. Because of the effect of torsion, ma terials will experience a gradient distribution of strain and thereby, a gradient distribution in hardness and grain re finement at the cross-section of the processed samples.…”

Section: Hpte Processingmentioning

confidence: 99%

“…Because of the effect of torsion, ma terials will experience a gradient distribution of strain and thereby, a gradient distribution in hardness and grain re finement at the cross-section of the processed samples. Increasing the ratio of ω/v in HPTE increases the amount of strain imposed on the material, and accordingly, enhances the grain refinement [12].…”

Section: Hpte Processingmentioning

confidence: 99%

“…In the case of aluminium alloys, some studies showed an improvement in the wear resistance of the processed samples [5,9], while others reported a reduction in the wear resistance after processing [10,11]. The latest studies evaluated the impact of a novel technique called High-Pressure Torsion Extrusion (HPTE) on the grain refinement, hardness, hydrogen storage, and wear resistance of materials [12][13][14]. This paper intends to explore the connection between the microstructural refinement and the tribological properties of aluminium 1050 processed by HPTE.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion

Antonov¹,

García-Sánchez²,

Hernández-Rodríguez³

et al. 2021

PEAS

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 85%

Section: Hpte Processingmentioning

confidence: 99%

Section: Hpte Processingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion

Antonov¹,

García-Sánchez²,

Hernández-Rodríguez³

et al. 2021

PEAS

View full text Add to dashboard Cite

“…Accordingly, aluminium alloys with enhanced strength properties are among the most desirable material in the automotive and aerospace field towards efficient energy consumption. Since HPT intervention, a wide range of strengthened aluminium alloys have been successfully produced, including AA1050 [39], AA1570 [36], AA2024 [34], AA5452 [25], AA5483 [5], AA6061 [27] and AA7075 [43].…”

Section: Introductionmentioning

confidence: 99%

Stress Flow Behaviour of AA2024 Under High-Pressure Torsion Deformation by Parametric Finite Element Analysis of Anvil Configuration

Lamin

Ariffin

Mohamed

et al. 2021

J Fail. Anal. and Preven.

View full text Add to dashboard Cite

High-pressure torsion (HPT) is an established material strengthening technique through severe plastic deformation. Expanding its strengthening capabilities requires an appropriate deformation control. Unlike the thoroughly reviewed associated strengthening parameters like sample and processing variables, limited information concerning the apparatus variables is available due to the high experimental cost. This limitation was addressed in this present work by conducting parametric analysis through finite element simulation. This study examined the effects of anvil parameters, including the free flow gap between anvils, anvil wall inclination angle and anvils alignment, on the stress characteristics during HPT. The systematic analysis revealed that the free flow gap, j of 1 mm, leads to a heterogeneous pressure distribution across the sample radius. However, the pressure homogeneity depends slightly on the wall inclination angle, b. In particular, j 0.2 mm and b 10°could generate continuous strengthening behaviour with the applied strain. Furthermore, misalignment also demonstrated contributing to the disc centre strengthening, a critical explanation that the fundamental torsion test formula could not describe. The presented parametric analysis through a computer-aided numerical computation serves as an effective deformation control and optimisation. It complements the existing theory and experimental findings at a minimal computation cost.

show abstract

Processing of high-strength thermal-resistant Al-2.2% cerium-1.3% lanthanum alloy rods with high electric conductivity by High Pressure Torsion Extrusion

Xu,

Lu,

Dai

et al. 2024

J Mater Sci

View full text Add to dashboard Cite

A novel severe plastic deformation (SPD) process of High Pressure Torsion Extrusion (HPTE) was applied to the rods of the Al-2.2 wt.% Ce-1.3 wt.% La (Al–3.5RE) alloy. The microstructure, microhardness, the mechanical strength, thermal stability, and electrical conductivity of the alloy after HPTE and subsequent annealing have been investigated. It was demonstrated that HPTE processing can simultaneously increase yield strength from 127 to 225 MPa and electrical conductivity from 54.7% IACS to 55.7% IACS in this alloy. Such a remarkable combination of properties was achieved thanks to significant refinement of microstructure constituents: grain size of Al matrix was reduced down to 0.9 µm and initially continuous network of Al11RE3 phase was broken to micrometer- and nanometer-sized particles. Furthermore, the yield strength of the HPTE-processed Al–3.5 RE alloy remains stable at 230 °C for 1 h due to micrometer- and nanometer-sized particles that pin the grain boundaries. Therefore, HPTE processing of Al–RE alloys has a high application potential in the electric power industry. Graphical abstract

show abstract

Evolution of microstructure and hardness in aluminum processed by High Pressure Torsion Extrusion

Cited by 20 publications

References 56 publications

Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion

Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion

Stress Flow Behaviour of AA2024 Under High-Pressure Torsion Deformation by Parametric Finite Element Analysis of Anvil Configuration

Processing of high-strength thermal-resistant Al-2.2% cerium-1.3% lanthanum alloy rods with high electric conductivity by High Pressure Torsion Extrusion

Contact Info

Product

Resources

About