Microstructures and mechanical properties of HPT processed 6063 Al alloy

Das, Mitun; Das, Goutam; Ghosh, Mainak; Wegner, Matthias; Rajnikant, V.; GhoshChowdhury, S.; Pal, Tapan Kumar

doi:10.1016/j.msea.2012.08.040

Cited by 52 publications

(15 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(1) that the strain varies across the disk and reaches zero at the disk centre where r = 0. This suggests that the microhardness distributions will be extremely inhomogeneous but numerous reports show there is usually a gradual evolution 2 with increasing strain towards a reasonable level of structural homogeneity [13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Structural impact on the Hall–Petch relationship in an Al–5Mg alloy processed by high-pressure torsion

Bazarnik

Huang

Lewandowska

et al. 2015

Materials Science and Engineering: A

View full text Add to dashboard Cite

The evolution of microstructure and microhardness was studied in a commercial 5483Al-5Mg alloy processed by high pressure torsion (HPT) under a pressure of 6.0 GPa up to 10 turns. Significant grain size refinement was observed even after 1/4 turn and additional processing led to a further grain size reduction and a shift in the distribution of grain boundary misorientation angles towards higher values.An essentially fully homogeneous microstructure was reached after 10 turns with a final grain size of ~70 nm, a saturation Vickers microhardness of Hv  240 which was attained at and above equivalent strains of ~150, a relatively narrow grain size distribution and a fraction of ~80% of high-angle grain boundaries. Analysis shows the Hall-Petch plot deviates from the conventional linear relationship for samples processed through small numbers of turns but after 3 or more turns there is a direct correlation between the results obtained in HPT processing and coarsegrained samples.

show abstract

Section: Introductionmentioning

confidence: 99%

Structural impact on the Hall–Petch relationship in an Al–5Mg alloy processed by high-pressure torsion

Bazarnik

Huang

Lewandowska

et al. 2015

Materials Science and Engineering: A

View full text Add to dashboard Cite

show abstract

“…For example, there is a gradual evolution towards microhardness homogeneity in numerous metallic alloys such as Al-4wt.%Mg, [31] AZ31, [32] Al-6063 and Cu-0.1% Zr. [33,34] A detailed review is now available summarizing these trends for a large number of metals. [35] Furthermore, the evolution towards homogeneity is consistent with the prediction of strain gradient plasticity modeling.…”

Section: Mechanical Characterizationmentioning

confidence: 99%

Microstructural Evolution and Properties of a Hot Extruded and HPT‐Processed Resorbable Magnesium WE43 Alloy

Liu

Pang

et al. 2016

Adv Eng Mater

View full text Add to dashboard Cite

“…In recent years, the method of the severe plastic deformation has attracted increasing attention to produce fine-grained materials [5], such as equal channel angular pressing (ECAP) [6], accumulative roll bonding (ARB) [7], high pressure torsion (HPT) [8], cyclic extrusion and compression (CEC) [9], etc.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of ZM6 magnesium alloy after continuous variable cross-section direct extrusion

LI¹,

SHI²,

HU³

et al. 2021

View full text Add to dashboard Cite

Due to the shortcomings existing in the methods of the traditional severe plastic deformation for the production of refined grain material, this paper presents a new extrusion method -continuous variable cross-section direct extrusion (CVCDE), with which interim dies between the billet and the die are added. This method not only shortens the process, but also realizes the integration of material preparation-forming technology. Compared with conventional extrusion, the extrusion with interim dies has a greater effect on the grain refinement and improves the tensile strength. At the same time, the fracture mechanism changes from brittle cleavage to ductile fracture. By the use of CVCDE, the metal flow uniformity is significantly improved and the possibility of the surface crack decreases. The streamline fold defects disappear when two interim dies have been employed. It provides a theoretical basis for the technique of short process extrusion forming so as to manufacture high performance magnesium alloy production.K e y w o r d s : microstructure, mechanical properties, continuous variable cross-section direct extrusion (CVCDE), magnesium alloy

show abstract

Microstructures and mechanical properties of HPT processed 6063 Al alloy

Cited by 52 publications

References 31 publications

Structural impact on the Hall–Petch relationship in an Al–5Mg alloy processed by high-pressure torsion

Structural impact on the Hall–Petch relationship in an Al–5Mg alloy processed by high-pressure torsion

Microstructural Evolution and Properties of a Hot Extruded and HPT‐Processed Resorbable Magnesium WE43 Alloy

Microstructure and mechanical properties of ZM6 magnesium alloy after continuous variable cross-section direct extrusion

Contact Info

Product

Resources

About